Weekly
tempe HEATH
via AB4EL Web Digests @ ibiblio.org
Date: Sat, 13 Mar 2004 09:44:44 -0800
From: Neil Morrison
Subject: Re: Crow Bar SCR
IMO this would be a non-critical replacement. It's cross ref'd as:-
2N3896 SPS135/NF 1/2" SCR
and I suspect many similar parts would be fine.
Neil
----- Original Message -----
From: "Dale Jones"
> Seeking information ,,where can I purchase the Crow Bar, SCR
NL576A for my
> HP1144A
>
> Thanks Dale AA7XX
-----------------------------------------------------------
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-----------------------------------------------------------
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-----------------------------------------------------------
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Date: Sat, 13 Mar 2004 12:09:58 -0800
From: John Farrington
Subject: Re: Crow Bar SCR
On 3/12/04 Dale Jones wrote:
>Seeking information ,,where can I purchase the Crow Bar, SCR NL576A for my
>HP1144A
>
>Thanks Dale AA7XX
----------------------------------------------------------------------
It's used to blow the 20 amp fuse in the DC output line; I believe it's
just a 35 amp 1/4" stud-mount SCR, and many SCRs rated at 35A or higher
can replace it if they'll fit on the board.
eg: NTE 5542 (35 amp) NTE 5567 (80 amp)
The short terminal is the gate, the long is the cathode, and the stud is
the anode.
NTE does not list a direct replacement, probably because its an obsolete
part, but you can get to an NTE equivalent via other cross-reference sites:
Dale Wentz's page at http://www.d8apro.com/heath3.htm
crosses the NL576A to a SPS135, which NTE does not list, but another
web site with a cross-reference page crosses that to the 2N3896:
http://www.hutsonind.com/crossref.shtml
and NTE crosses that to their NTE 5542. NTE lists their distributors at
http://www.nteinc.com/NET_St_lst/Disty.html
Also, Mouser in Texas http://www.mouser.com
has the 5542 as their part #
526-NTE5542
for $9.63.
73
John KE5ZB
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
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Date: Sat, 13 Mar 2004 13:55:35 -0600
From: "Gary H. Harmon, Jr."
Subject: GC-1A Manual in PDF
I'll post the AC power supply pages later.
73, gary
===========/////===========
Gary H. Harmon, Jr. - K5JWK
6302 Robin Forest
San Antonio, TX 78239-3218
(210) 657-1549 home
(210) 884-6926 cell
(210) 203-7000 pager
gharmon@idworld.net
http://www.k5jwk.com/GC-1A.pdf
-----------------------------------------------------------
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for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
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Date: Sat, 13 Mar 2004 09:47:22 -0800
From: Neil Morrison
Subject: Re: HP-20 Schematic
----- Original Message -----
From: "W6CUX"
> Bill,
> I found the HP-20 schematic on both the Bama site and its mirror.
> Unfortunately it's in the .DJVU which I don't have the reader for.
DejaVu is an add in to IE which is a free download. You can export
and print from the add-in.
> Right click to download:
> ftp://bama.sbc.edu/downloads/heath/hp20
> or
> ftp://216.24.174.245/bama/heath/hp20
>
> It's also at this site as : HP-20-3.png (whatever that is).
PNG (Portable Network Graphics) Home Site
http://www.libpng.org/pub/png/
Most newer browsers handle it fine.
Neil
-----------------------------------------------------------
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for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
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Date: Sat, 13 Mar 2004 12:36:00 -0800
From: Neil Morrison
Subject: Fw: FS COCO unit - ideal for Ham ops.
*** NOT SOLD BY ME ***
----- Original Message -----
From: "Lou"
Newsgroups: comp.sys.tandy
Sent: Saturday, 13 March, 2004 12:27 PM
Subject: FS COCO unit - ideal for Ham ops.
> First of all, my apologies if this is the wrong group. This is the
only
> group I "found" listed for this sort of computer stuff. This will
be the
> only listing you'll see of this regardless.
>
> FS A Color Computer from Radio shack. This is the unit itself
meaning no
> monitor or other "computer" related items. I fed the signal to a 5"
TV set.
> What DOES come with it, is a Terminal unit from Kantronics, which
plugs into
> the computer (cartridge with cable going to TU). The TU comes with
> instruction manual. What you will "need" to use it, is a mic
connector for
> your transceiver, an audio plug to match your receiver and a 12 VDC
up to 1
> amp Power Adaptor to power the TU unit. The TU does RTTY, CW to 99
WPM and
> some other modes. It does NOT do packet or Wefax. $55 for the set
up plus
> shipping.
Regards,
Neil
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 09:44:44 -0800
From: Neil Morrison
Subject: Re: Crow Bar SCR
IMO this would be a non-critical replacement. It's cross ref'd as:-
2N3896 SPS135/NF 1/2" SCR
and I suspect many similar parts would be fine.
Neil
----- Original Message -----
From: "Dale Jones"
> Seeking information ,,where can I purchase the Crow Bar, SCR
NL576A for my
> HP1144A
>
> Thanks Dale AA7XX
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 12:09:58 -0800
From: John Farrington
Subject: Re: Crow Bar SCR
On 3/12/04 Dale Jones wrote:
>Seeking information ,,where can I purchase the Crow Bar, SCR NL576A for my
>HP1144A
>
>Thanks Dale AA7XX
----------------------------------------------------------------------
It's used to blow the 20 amp fuse in the DC output line; I believe it's
just a 35 amp 1/4" stud-mount SCR, and many SCRs rated at 35A or higher
can replace it if they'll fit on the board.
eg: NTE 5542 (35 amp) NTE 5567 (80 amp)
The short terminal is the gate, the long is the cathode, and the stud is
the anode.
NTE does not list a direct replacement, probably because its an obsolete
part, but you can get to an NTE equivalent via other cross-reference sites:
Dale Wentz's page at http://www.d8apro.com/heath3.htm
crosses the NL576A to a SPS135, which NTE does not list, but another
web site with a cross-reference page crosses that to the 2N3896:
http://www.hutsonind.com/crossref.shtml
and NTE crosses that to their NTE 5542. NTE lists their distributors at
http://www.nteinc.com/NET_St_lst/Disty.html
Also, Mouser in Texas http://www.mouser.com
has the 5542 as their part #
526-NTE5542
for $9.63.
73
John KE5ZB
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 13:55:35 -0600
From: "Gary H. Harmon, Jr."
Subject: GC-1A Manual in PDF
I'll post the AC power supply pages later.
73, gary
===========/////===========
Gary H. Harmon, Jr. - K5JWK
6302 Robin Forest
San Antonio, TX 78239-3218
(210) 657-1549 home
(210) 884-6926 cell
(210) 203-7000 pager
gharmon@idworld.net
http://www.k5jwk.com/GC-1A.pdf
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 09:47:22 -0800
From: Neil Morrison
Subject: Re: HP-20 Schematic
----- Original Message -----
From: "W6CUX"
> Bill,
> I found the HP-20 schematic on both the Bama site and its mirror.
> Unfortunately it's in the .DJVU which I don't have the reader for.
DejaVu is an add in to IE which is a free download. You can export
and print from the add-in.
> Right click to download:
> ftp://bama.sbc.edu/downloads/heath/hp20
> or
> ftp://216.24.174.245/bama/heath/hp20
>
> It's also at this site as : HP-20-3.png (whatever that is).
PNG (Portable Network Graphics) Home Site
http://www.libpng.org/pub/png/
Most newer browsers handle it fine.
Neil
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 12:36:00 -0800
From: Neil Morrison
Subject: Fw: FS COCO unit - ideal for Ham ops.
*** NOT SOLD BY ME ***
----- Original Message -----
From: "Lou"
Newsgroups: comp.sys.tandy
Sent: Saturday, 13 March, 2004 12:27 PM
Subject: FS COCO unit - ideal for Ham ops.
> First of all, my apologies if this is the wrong group. This is the
only
> group I "found" listed for this sort of computer stuff. This will
be the
> only listing you'll see of this regardless.
>
> FS A Color Computer from Radio shack. This is the unit itself
meaning no
> monitor or other "computer" related items. I fed the signal to a 5"
TV set.
> What DOES come with it, is a Terminal unit from Kantronics, which
plugs into
> the computer (cartridge with cable going to TU). The TU comes with
> instruction manual. What you will "need" to use it, is a mic
connector for
> your transceiver, an audio plug to match your receiver and a 12 VDC
up to 1
> amp Power Adaptor to power the TU unit. The TU does RTTY, CW to 99
WPM and
> some other modes. It does NOT do packet or Wefax. $55 for the set
up plus
> shipping.
Regards,
Neil
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 09:44:44 -0800
From: Neil Morrison
Subject: Re: Crow Bar SCR
IMO this would be a non-critical replacement. It's cross ref'd as:-
2N3896 SPS135/NF 1/2" SCR
and I suspect many similar parts would be fine.
Neil
----- Original Message -----
From: "Dale Jones"
> Seeking information ,,where can I purchase the Crow Bar, SCR
NL576A for my
> HP1144A
>
> Thanks Dale AA7XX
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 12:09:58 -0800
From: John Farrington
Subject: Re: Crow Bar SCR
On 3/12/04 Dale Jones wrote:
>Seeking information ,,where can I purchase the Crow Bar, SCR NL576A for my
>HP1144A
>
>Thanks Dale AA7XX
----------------------------------------------------------------------
It's used to blow the 20 amp fuse in the DC output line; I believe it's
just a 35 amp 1/4" stud-mount SCR, and many SCRs rated at 35A or higher
can replace it if they'll fit on the board.
eg: NTE 5542 (35 amp) NTE 5567 (80 amp)
The short terminal is the gate, the long is the cathode, and the stud is
the anode.
NTE does not list a direct replacement, probably because its an obsolete
part, but you can get to an NTE equivalent via other cross-reference sites:
Dale Wentz's page at http://www.d8apro.com/heath3.htm
crosses the NL576A to a SPS135, which NTE does not list, but another
web site with a cross-reference page crosses that to the 2N3896:
http://www.hutsonind.com/crossref.shtml
and NTE crosses that to their NTE 5542. NTE lists their distributors at
http://www.nteinc.com/NET_St_lst/Disty.html
Also, Mouser in Texas http://www.mouser.com
has the 5542 as their part #
526-NTE5542
for $9.63.
73
John KE5ZB
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 13:55:35 -0600
From: "Gary H. Harmon, Jr."
Subject: GC-1A Manual in PDF
I'll post the AC power supply pages later.
73, gary
===========/////===========
Gary H. Harmon, Jr. - K5JWK
6302 Robin Forest
San Antonio, TX 78239-3218
(210) 657-1549 home
(210) 884-6926 cell
(210) 203-7000 pager
gharmon@idworld.net
http://www.k5jwk.com/GC-1A.pdf
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 09:47:22 -0800
From: Neil Morrison
Subject: Re: HP-20 Schematic
----- Original Message -----
From: "W6CUX"
> Bill,
> I found the HP-20 schematic on both the Bama site and its mirror.
> Unfortunately it's in the .DJVU which I don't have the reader for.
DejaVu is an add in to IE which is a free download. You can export
and print from the add-in.
> Right click to download:
> ftp://bama.sbc.edu/downloads/heath/hp20
> or
> ftp://216.24.174.245/bama/heath/hp20
>
> It's also at this site as : HP-20-3.png (whatever that is).
PNG (Portable Network Graphics) Home Site
http://www.libpng.org/pub/png/
Most newer browsers handle it fine.
Neil
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 12:36:00 -0800
From: Neil Morrison
Subject: Fw: FS COCO unit - ideal for Ham ops.
*** NOT SOLD BY ME ***
----- Original Message -----
From: "Lou"
Newsgroups: comp.sys.tandy
Sent: Saturday, 13 March, 2004 12:27 PM
Subject: FS COCO unit - ideal for Ham ops.
> First of all, my apologies if this is the wrong group. This is the
only
> group I "found" listed for this sort of computer stuff. This will
be the
> only listing you'll see of this regardless.
>
> FS A Color Computer from Radio shack. This is the unit itself
meaning no
> monitor or other "computer" related items. I fed the signal to a 5"
TV set.
> What DOES come with it, is a Terminal unit from Kantronics, which
plugs into
> the computer (cartridge with cable going to TU). The TU comes with
> instruction manual. What you will "need" to use it, is a mic
connector for
> your transceiver, an audio plug to match your receiver and a 12 VDC
up to 1
> amp Power Adaptor to power the TU unit. The TU does RTTY, CW to 99
WPM and
> some other modes. It does NOT do packet or Wefax. $55 for the set
up plus
> shipping.
Regards,
Neil
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------
Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sat, 13 Mar 2004 22:15:41 -0500
From: Jack Schrader
Subject: capacitor
I have replaced 4 out of 6 of the 125mfd / 450v caps in my sb200 but =
would like to replace the other two. I am having trouble identifying the =
correct part no. for them in Mouser. Can anyone help me with the correct =
Mouser no. ?
Also the fan in the 200 is a little noisy. Should I replace the rubber =
washers next to the standoffs and what else can I do ?
Tnx Jack
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Date: Sun, 14 Mar 2004 09:09:19 -0600
From: Frank Krozel
Subject: Capacitor needed for HW-16 please
I am in need of an electrolytic cap for the hw-16
50mfd/350VDC
40mfd,350VDC
80mfd/300VDC
80mfd/200VDC
Can you help?
Best Regards, Frank
kg9h@arrl.net
Voice: 630-924-1600
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
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-----------------------------------------------------------
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To post - HEATH@LISTSERV.TEMPE.GOV
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Date: Sun, 14 Mar 2004 13:38:08 -0500
From: "Ken Simpson, W8EK"
Subject: Original Heath Manuals FS
ORIGINAL Heath manuals. These are the manuals
only. They are all originals, and not copies.
HM-2102 VHF Wattmeter - 1972
A few check marks, but book looks
almost new. Schematic in book. $ 15
SB-610 monitor scope - 1966
check marks in about half of book
Schematic is part of book. $ 15
HD-15 Hybrid Phone patch - 1965
Check marks in about half of book,
Schematic is part of book. $10
HW-2036 A, 2 m synthesized FM xcvr
Manual has cover torn, and binding is
bad, but it is complete, w/schematic. $10
SA-1480 - coax switch - 1979
Pictorials only $ 3
These are original manuals only.
Prices do not include shipping from Florida.
Thanks.
73,
Ken, W8EK
Ken Simpson
E-mail to W8EK@copper.net or W8EK@arrl.net
Voice Phone (352) 732-8400
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
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-----------------------------------------------------------
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To post - HEATH@LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html
Date: Sun, 14 Mar 2004 13:47:26 -0500
From: "Ken Simpson, W8EK"
Subject: Microphones FS
For Sale:
Electro Voice 621/Heath Desk Microphone
This is the brownish colored desk mic that matches fairly
late Heath equipment. Of course the microphone has a
silver colored screen on it. It looks like new, and is still
in its box with warranty card. I can not find a scratch
on it, nor does it have worn paint. $ 75
Turner 350 C hand microphone
This is a Hi Z ceramic hand microphone used on
many of the older rigs. It works fine, and looks
very nice. $35
Calrad DM-5 hand microphone
Similar to the Turner 350 C above, but a lighter
"off white" color. Hi Z. It works fine, and looks
really great. $ 30
Prices do not include shipping from Florida.
Thanks.
73,
Ken, W8EK
Ken Simpson
E-mail to W8EK@copper.net or W8EK@arrl.net
Voice Phone (352) 732-8400
-----------------------------------------------------------
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Date: Sun, 14 Mar 2004 11:02:39 -0800
From: Rinkie & Ron Pollack
Subject: Scope Info
Have an IO 4210 scope with no sweep. Anyone have schematic/manual that they
can copy?
Thanks!
Ron K2RP
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Date: Sun, 14 Mar 2004 16:20:08 -0500
From: David B Markheim
Subject: Re: Capacitor needed for HW-16 please
Frank,
I don't think you're gonna find a new can with those specs. You can
probably get a used one, but do you really want a used electrolytic? Your
best bet is to get individual electrolytics from a supply house like
Mouser and eliminate the big can. If you're like most and want to keep
the original "look", you can even hollow out the can and stuff it with
the new caps. Plan ahead and determine whether the radial or axial lead
varieties will work best (maybe using both types). I've done this with a
number of old rigs and it works great.
Dave
W2QU
On Sun, 14 Mar 2004 09:09:19 -0600 Frank Krozel
writes:
> I am in need of an electrolytic cap for the hw-16
> 50mfd/350VDC
> 40mfd,350VDC
> 80mfd/300VDC
> 80mfd/200VDC
> Can you help?
> Best Regards, Frank
> kg9h@arrl.net
> Voice: 630-924-1600
>
> -----------------------------------------------------------
> Products bought, sold or traded here is the responsibility of the
> parties involved. This list and the City of Tempe are not
> responsible
> for losses or misrepresentations of any kind. Buyer beware!
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
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Date: Sun, 14 Mar 2004 17:53:38 -0500
From: tlee
Subject: FS: Heathkit IT-17 Tube Tester
I have an IT-17 tube tester that works great. Case is about an 8. Roll =
chart is in tact and works good. No other documentation for it. I will =
take a reasonable offer on this.
Ted N8GPQ
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Date: Sun, 14 Mar 2004 17:56:32 -0500
From: Mark S Graalman
Subject: Want a manual for HD-1418 audio filter
Anyone have a manual for the Heath HD-1418 audio filter
they'd be willing to part with?
73, Mark WB8JKR
Support Amateur Radio, have a Ham for dinner
Member ARRL, QCWA, OTC, Society of Cable Telecommunication Engineers
WAS, WAC, WTO, DXCC MIXED, DXCC PHONE, GJDXCC, VUCC 2M, 1st place Ohio
single op 1988 ARRL SweepStakes
Novice 3/71, General 8/72, Advanced 8/78, Extra 8/89
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Date: Sun, 14 Mar 2004 19:22:23 -0600
From: Bill Stietenroth
Subject: Re: Capacitor needed for HW-16 please
There is another supplier of electrolytic caps in the cans and individual
values.
www.tubesandmore.com
Antique Electronic Supply
6221 South Maple Ave.
Tempe, AZ 85283
They specialize in parts for refurbishing old radios and music amps.
Bill, K5ZTY
Houston, TX
On Sun, 14 Mar 2004 09:09:19 -0600 Frank Krozel
writes:
> I am in need of an electrolytic cap for the hw-16
> 50mfd/350VDC
> 40mfd,350VDC
> 80mfd/300VDC
> 80mfd/200VDC
> Can you help?
> Best Regards, Frank
> kg9h@arrl.net
> Voice: 630-924-1600
>
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Date: Mon, 15 Mar 2004 05:17:47 -0500
From: Mark S Graalman
Subject: HD-1418 manual located, thanks!
I have located a manual for the audio filter, thanks to
everyone for their help and offers.
73, Mark WB8JKR
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Date: Mon, 15 Mar 2004 10:52:54 -0600
From: William Strong
Subject: SOURCE OF PARTS
TRY OCEAN STATE ELECTRONICS=20
PRETTY GOOD INVENTORY..=20
http://www.oselectronics.com/
W.A. Strong
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Date: Mon, 15 Mar 2004 14:01:08 EST
From: Stephen Tetorka
Subject: HT-40?
Hello Friends:
I picked up a Hallicrafters HT-40 transmitter.
It loads up ok...the only problem is the smoke coming from plate resistor on
the Modulator tube...and the overheated and cracked 7 watt resistor in the
power supply.....
The schematic I got with the rig has some significant different component
values.
Don't know if ' mickey mouse ' tried to fix it...or it's a legimate factory
mod....the number on my schematic is 089 - 002030 B.
Any and all suggestions are warmly welcome.
Tnx,
Steve
WA2TAK
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Date: Mon, 15 Mar 2004 16:39:04 -0500
From: "w4gbw@brevard.net"
Subject: Re: HT-40?
Hi Steve,
Restore it to original and start from there. Good luck.
Wayne;
W4GBW
Stephen Tetorka wrote:
>Hello Friends:
>
>I picked up a Hallicrafters HT-40 transmitter.
>
>It loads up ok...the only problem is the smoke coming from plate resistor on
>the Modulator tube...and the overheated and cracked 7 watt resistor in the
>power supply.....
>
>The schematic I got with the rig has some significant different component
>values.
>
>Don't know if ' mickey mouse ' tried to fix it...or it's a legimate factory
>mod....the number on my schematic is 089 - 002030 B.
>
>Any and all suggestions are warmly welcome.
>
>Tnx,
>Steve
>WA2TAK
>
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>-----------------------------------------------------------
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Date: Mon, 15 Mar 2004 18:24:24 -0500
From: Peter A Markavage
Subject: Re: HT-40?
The two resistors across the caps in the power supply should be 10K at 10
watts. On the low voltage side, R29, should be 1K, at 2 watts. The "-B"
schematic has some minor component value changes over the original
schematic
Pete, WA2CWA
On Mon, 15 Mar 2004 16:39:04 -0500 "w4gbw@brevard.net"
writes:
> Hi Steve,
> Restore it to original and start from there. Good luck.
> Wayne;
> W4GBW
>
> Stephen Tetorka wrote:
>
> >Hello Friends:
> >
> >I picked up a Hallicrafters HT-40 transmitter.
> >
> >It loads up ok...the only problem is the smoke coming from plate
> resistor on
> >the Modulator tube...and the overheated and cracked 7 watt resistor
> in the
> >power supply.....
> >
> >The schematic I got with the rig has some significant different
> component
> >values.
> >
> >Don't know if ' mickey mouse ' tried to fix it...or it's a legimate
> factory
> >mod....the number on my schematic is 089 - 002030 B.
> >
> >Any and all suggestions are warmly welcome.
> >
> >Tnx,
> >Steve
> >WA2TAK
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Date: Mon, 15 Mar 2004 18:45:08 EST
From: "Alan W. Fremmer"
Subject: WTB DX-60 Function Switch
Hey,
Anyone out there in boatanchor land have a spare function switch for a DX-60.
Mine is shorted out. Called Electro Switch, which a number of people
recommended, and they wanted to build one for me for about $200! NOT! Also could
use an Antenna Trim knob in black for the HR-10B. Thanks, in advance, for any
help.
Alan, KB2HEI
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Date: Tue, 16 Mar 2004 13:35:49 -0700
From: Kenneth King
Subject: HW-7
I am seeking a dial plate or a scanned copy of one with all the markings
visible for my HW-7
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Date: Tue, 16 Mar 2004 13:40:20 -0700
From: Kenneth King
Subject: HD-1410
I am looking for a D40C1 transister for my electronic keyer. Or if there
is a direct replacement what it is.
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Date: Tue, 16 Mar 2004 17:02:22 -0500
From: Mark S Graalman
Subject: Re: HD-1410
The ECG or NTE 265 will work Or you could as I have,
get rid of the zener and pass transistor and install a
7805 three terminal regulator chip.
73, Mark WB8JKR
On Tue, 16 Mar 2004 13:40:20 -0700 Kenneth King
writes:
> I am looking for a D40C1 transister for my electronic keyer. Or if
> there
> is a direct replacement what it is.
>
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Date: Tue, 16 Mar 2004 16:22:50 -0500
From: Tom Doubek
Subject: SB-110A Mods List?
"Currently restoring several SB-110A's and
looking for a list of known modifications to
this rig."
"Thanks"
"Tom Doubek, AA1CA"
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Date: Tue, 16 Mar 2004 16:18:16 -0800
From: Edward B Richards
Subject: F/S: 10" boat anchor speaker, 4 Ohms
I could not find a suitable speaker for my receiver, so I decided to
build my own. I bought a pair of stereo speakers ( they would not sell me
only one) And built my own enclosure from 3/4" MDF with glued and stapled
joints. There is a 10" low and mid-range speaker coaxially mounted with a
4" mid to high range. They are both 8 Ohms but when connected in parallel
the resulting impedance is 4 Ohms. The housing is 11-3/4" square with
1/4" added by the feet and 7-3/4" deep. Painted grey but repaintable to
match your equipment. Sounds good to me.
Since I had to buy 2 speakers, I made 2 of the above. I only need 1 so
the other is up for sale. I am asking $50 plus shipping. I have more than
that in it but I feel that is all a person would be willing to pay. Pix
available on request. Thank you.
73, Ed Richards K6UUZ
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Date: Tue, 16 Mar 2004 22:26:51 -0700
From: Dave Hollander
Subject: FS: Heathkit Stuff - Manuals, Parts, Radios
I have the following Heathkit items for sale that are excess to my
needs. Prices do not include shipping. I will ship overseas.
Heathkit HD-30 Crystal Calibrator............$35 plus shipping
Working unit in exceptionally nice condition with a copy of the manual
http://members.cox.net/radiostuff9/heath_cal.jpg
http://members.cox.net/radiostuff9/heath_cal2.jpg
Heathkit HW-2036 2 Meter Transceiver and HWA-202-1 Power Supply.....$50
plus shipping.
Nice cosmetic condition. Receiver and power supply work fine.
Transmitter is not working
http://members.cox.net/hw202.jpg
Heathkit DX-40 Transmitter Parts
Heathkit DX-40 Plate Meter...$20 plus shipping
http://members.cox.net/radiostuff9/dx40meter.jpg
Heathkit DX-40 Front Panel and Cabinet........$20 plus shipping
http://members.cox.net/radiostuff9/dx40metal.jpg
http://members.cox.net/radiostuff9/dx40metal2.jpg
Heathkit DX-40 Transmitter-Tube Set.............$20 plus shipping
http://members.cox.net/radiostuff9/dx40tubes.jpg
Also have the chassis with the bandswitch assembly and other parts. No
power transformer
NOS Heathkit Manuals
These are NOS manuals that appear to have been purchased without the kit
as none have the check marks for assembling the item. Finding an
unmarked manual is rare unless you happen to come across an unbuilt kit.
Heathkit 2 Meter Converter XC-2 Assembly
Manual.......................$60 plus shipping
Insides are excellent and the 8 foldout drawings are there. The back
cover has a a bit of shop ware and their is a small stain on the lower
left bottom of the front cover. Date on manual is 1959.
http://members.cox.net/radiostuff9/heathxc2.jpg
Heathkit AC-1 Antenna Tuner Manual- NOS.......................$50 plus
shipping
Insides are excellent and the 2 foldout drawings are there. The back
cover has a a bit of shop ware. Date on manual is 1957.
http://members.cox.net/radiostuff9/heath_ac1.jpg
Heathkit SB-10 Single Sideband Manual - NOS.......................$60
plus shipping
Insides are excellent and the 4 foldout drawings are there. The back
cover has a a bit of shop ware. Date on manual is 1958.
http://members.cox.net/radiostuff9/heath_sb10.jpg
Heathkit HW-19 Manual 10 Meter Transceiver.......................$50
plus shipping
This is the ten meter version of the lunchbox (Twoer). Insides are
excellent. The back cover has a a bit of shop ware. Date on manual is
1960.
http://members.cox.net/radiostuff9/heath_tenner.jpg
Heathkit CO-1 Code Practice Oscillator Manual.......................$20
plus shipping
Insides are excellent and the 1 foldout drawing is there. The back cover
has a a bit of shop ware. Date on manual is 1959.
http://members.cox.net/radiostuff9/heathcpo.jpg
Heathkit HD-19 Hybrid Phone Patch Manual.......................$20 plus
shipping
Insides are excellent however their is a small bit of water damage in
the lower left bottom of the pages. None of the page are or were
sticking together The back cover has a a bit of shop ware. Date on
manual is 1958.
http://members.cox.net/radiostuff9/heath_patch.jpg
Heathkit AM-2 SWR Meter Manual-NOS.......................$20 plus
shipping
Insides are excellent and the 1 foldout drawing is there. The back cover
has a a bit of shop ware. Date on manual is 1959.
http://members.cox.net/radiostuff9/heathswr.jpg
Heathkit B-1 Balun Coil Manual - NOS.......................$15 plus
shipping
Insides are excellent. The back cover has a a bit of shop ware. Date on
manual is 1957.
http://members.cox.net/radiostuff9/heath_balun.jpg
Non-Manuals
Heathkit Catalog - Winter 1985.......................$10 plus shipping
Very good condition.
http://members.cox.net/radiostuff9/heathkitwinter1985.jpg
Thanks for looking.
***********************************************************
Dave N7RK Boatanchors Home Page:
http://members.cox.net/n7rk
Phoenix, Arizona *DXCC Honor Roll* *WAZ#23 - 75 Meter SSB*
ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX
Boatanchor Collector Extraordinaire preferring Hallicrafters, National
and what ever else looks interesting!
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Date: Wed, 17 Mar 2004 06:39:34 -0500
From: Gerry Caines
Subject: Needed Yaesu SSB Filters
Greetings all, anyone have the following Yaesu IF filters for sale:
YF-114SN 2.0 bandwidth SSB filter & YF110SN 2.0 bandwith SSB filter
Also looking for a Heil HC-5 element. If anyone can help me out much
appreciated.
Gerry (VA3GRC)
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Date: Wed, 17 Mar 2004 06:27:13 -0800
From: FRED HOLNAGEL
Subject: Paint
Greetings. If you've ever tried to match a near flat black color on =
older gear, but glossy is too much so and flat is too much like priimer, =
listen up. Krylon 1613, Semi-Flat Black is the right stuff. I painted =
the top of a cabinet that was discolored from stuff being set on it and =
it matched the rest of the unit perfectly. I found it at a Fred Meyer =
store in Oregon. Fred, W7PRV
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Date: Wed, 17 Mar 2004 09:01:17 -0600
From: Tom in N Texas
Subject: IO-40 Oscilloscope, What is it?
Gentlemen,
I have found an oscilloscope to buy, by email through a friend. It is
described as a Heath Scope Model 10-40. I haven't been able to identify it.
I looked in BAMA, Heathkit Circuit Archive in England, and half-a-dozen
other places, as well as Google. No luck.
I've emailed my friend to ask the owner.
Meanwhile, anybody know what he's talking about and specs and prices?
Thanks, Tom KC5INU
Tom in N Texas, KC5INU, EM12jk, RARA 025, QRPp-I 353, NETXQRP 33, QCWA
31587, tdulin@pulse.net,
Hallicrafters SX-71, S-38, S-38D, National NC-300, Johnson Viking Ranger,
Knight TR106, Heath SB-101, "Sixer", IO-10, V-7 VTVM, etc., etc.
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Date: Wed, 17 Mar 2004 10:42:08 -0500
From: ELWOOD TURNER
Subject: sb650
Hello:
A few weeks ago I posted a want ad for a Heath freq display for my SB102
Some one e-mailed me & told me he would get back with a price.
If that was you---or you have one to sell----please get back to me
Thanks Woody
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Date: Wed, 17 Mar 2004 10:57:01 -0500
From: Dale Smith
Subject: Apache driver transformer
Hi Group
I have acquired a Heath Apache ,it seems as though the driver
transformer is missing.
Does anyone know of a replacement for it or what else i can do?It is
connected to the audio driver and to grid of
modulator tubes.Thanks..dale/ka5who
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Date: Wed, 17 Mar 2004 12:16:11 -0500
From: gary fortnum
Subject: Re: Paint
Fred,
I can relate to your description of "glossy to primer flat". It seems that
there is not too much out there available in semi-gloss finishes.
There is another one that I found at one of the automotive supply stores
(Pep Boys I think).
It is Dupli-Color DA1603 Semi-Gloss Black.
This has worked well to restore the bezels on some test equipment that are
niether gloss or flat but are in between.
Gary.
----- Original Message -----
From: "FRED HOLNAGEL"
To:
Sent: Wednesday, March 17, 2004 9:27 AM
Subject: Paint
Greetings. If you've ever tried to match a near flat black color on older
gear, but glossy is too much so and flat is too much like priimer, listen
up. Krylon 1613, Semi-Flat Black is the right stuff. I painted the top of
a cabinet that was discolored from stuff being set on it and it matched the
rest of the unit perfectly. I found it at a Fred Meyer store in Oregon.
Fred, W7PRV
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Date: Wed, 17 Mar 2004 10:39:47 -0800
From: Glen Zook
Subject: Re: Paint
Try the "satin" finish. That is about half-way
between gloss and flat. I use satin finish for all of
the computer matched paint that I get for boat anchor
cabinets from Sherwin-Williams. It usually looks
pretty much "right on" to the original finishes.
Most cans of spray paint are available in satin
finish.
Glen, K9STH
--- gary fortnum wrote:
It seems that there is not too much out there
available in semi-gloss finishes.
=====
Glen, K9STH
Web sites
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http://home.comcast.net/~zcomco
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Date: Wed, 17 Mar 2004 11:02:21 -0700
From: Kenneth King
Subject: Need a photocopy of HW-7 dial plate
Will someone please make a photocopy of the dial plate of a HW-7 with all
the markings visible, scan it and email it to me. The dial plate on my HW-
7 is missing most of the markings.
Ken K1DWZ
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Date: Wed, 17 Mar 2004 16:11:50 EST
From: Stephen Tetorka
Subject: Re: Paint
The few spray paints I've used to repaint rig cabinets have disappointed me
because the surface finish is too soft.
Are there some brands that are better than others?
Regards,
Steve
WA2TAK
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Date: Wed, 17 Mar 2004 13:33:05 -0800
From: Glen Zook
Subject: Re: Paint
You really want acryllic paints if you can find them
(they are available). I use acryllic latex from
Sherwin-Williams on the cabinets that I repaint. It
is much harder than enamel and still cleans up with
water.
Glen, K9STH
--- StephenTetorka@cs.com wrote:
The few spray paints I've used to repaint rig cabinets
have disappointed me because the surface finish is too
soft.
=====
Glen, K9STH
Web sites
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http://home.comcast.net/~zcomco
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Date: Wed, 17 Mar 2004 20:35:28 -0500
From: "w4gbw@brevard.net"
Subject: Re: Paint
Steve,
I threw the wife out years ago so bake all paint jobs at min temp in the
oven. Works great and the finish is scratch resistant. 73.
Wayne,
W4GBW
Stephen Tetorka wrote:
>The few spray paints I've used to repaint rig cabinets have disappointed me
>because the surface finish is too soft.
>
>Are there some brands that are better than others?
>
>
>Regards,
>Steve
>WA2TAK
>
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Date: Wed, 17 Mar 2004 20:44:41 -0500
From: Mark S Graalman
Subject: Heath receiver performance numbers
Just for the sake of comparison, I've measured the
MDS (minimum discernable signal), TTDR (two-tone
dynamic range), and BDR (Blocking dynamic range)
of a few Heath receivers. Now there are some REAL
numbers to use in comparison to other rigs.
The numbers for the SB-303 and SB-104 were
measured by Sherwood Engineering, the rest where
measured by me here in my shop.
SB-301:
MDS -138 dBm
TTDR (20 Khz spacing) 83 dB
BDR (20 Khz spacing) 118 dB
SB-303:
MDS -135 dBm
TTDR (20 Khz spacing) 66 dB
BDR (100 Khz spacing) 104 dB
SB-104
MDS -123 dBm
TTDR (20 Khz spacing) 79 dB
BDR (100 Khz spacing) 92 dB
HW-101 (JKR/JCJ optimizing mods installed)
MDS -138 dBm
TTDR (20 Khz spacing) 82 dB
BDR (20 Khz spacing) 95 dB
HR-1680
MDS -137
TTDR (20 Khz spacing) 81 dB
BDR (20 Khz spacing) 105 dB
Since the SB301 and 300 are basically the same unit the
numbers should be about the same, the same would go for the
HW-101 and the SB-102.
The biggest departure from typical of the era performance in
these rigs is the lousy ultimate rejection of the I.F. filter which
is about 70 dB. It can also be seen that the SB-303 has way
too much gain, the SB-300/301 is actually a much better unit
in terms of overload resistance.
Keep in mind also that these numbers were taken on rigs that
are working perfectly and have had a good instrument alignment.
73, Mark WB8JKR
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Date: Wed, 17 Mar 2004 18:28:47 -0800
From: Glen Zook
Subject: Re: [Heathkit] Heath receiver performance numbers
I have had pretty much the same performance on the
SB-301. However, my service monitor drops out of
"lock" at about -135 dBm! But, the SB-301 is still
"going strong" at that level. I get similar responses
out of my 75S-3A and one of my 75S-1 receivers. The
other 75S-1 drops out about -135 dBm just before the
service monitor drops out of lock! This is with the
internal attenuator. I could plug in an external
attenuator and get a better reading.
The SB-303 that I owned didn't get as good a MDS
reading as what you got. It tended to be a "bit"
noisey even when properly aligned.
Glen, K9STH
--- Mark S Graalman wrote:
SB-301:
MDS -138 dBm
TTDR (20 Khz spacing) 83 dB
BDR (20 Khz spacing) 118 dB
=====
Glen, K9STH
Web sites
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http://home.comcast.net/~zcomco
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Date: Wed, 17 Mar 2004 20:46:01 -0700
From: "Peter J. Havens"
Subject: Need IP-20 manual
Hey Guys:
Subject kind of says it: Am in need of a copy of schematic of IP-20 =
power supply, or a manual, or copy of same. Can anybody help me out?=20
Thanks and 73. Peter Havens, KA2SQJ
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Date: Thu, 18 Mar 2004 01:22:37 -0500
From: MIKE BRYCE
Subject: tales of trouble ie the HW5400
well boys and girls...
after spending two weeks on this HW5400 yesterday, I have come to the
conclusion that the HW5400 is the most screwed up radio heathkit ever put
out on the ham market
ah.. but your thinking that perhaps this is just one rotten egg in the
basket.
well this is number three that I have owned. All have the same problems.
1. The thing clicks when the main tuning knob is turned. Although the
receiver is muted to prevent chirping as the PPL lock and unlock as you
tune. The receiver still has a slight click as you tune the knob.
2. Unbelievable ho-hum receiver. Forget about "working the weak one" with
this HW5400. Signals 4 khz away cause the agc to pump.
3. Really goofy and I mean GOOFY power supply connections as well as speaker
connections. What were they thinking of?
4. The matching power supply runs so hot under load I would be afraid it
could catch fire. Fan cooling is a must. (Who says you need a tube rig to
warm the shack!)
5. Although a mute point now, the HW5400 is (was) just way more than joe ham
could handle. Three PLL, two VCOs, microprocessor oh my! The SB-104 is a
walk in the park compared to the HW5400
6. Personal opinion, but the knobs are way too small. Especially the volume
and RIT knobs.
All and all, I'll take the SB-104 any day. In fact, I have 23 SB-104s
sitting in the shack, and only one HW5400.
Perhaps I'll try another one and see if it is a wacked up as the one I have
now. I know the other two I did own, were not better, just as screwed up..
Will be down at dayton this year, same spots as before, 509, 510 and 511.
Drop by and say hello!
Mike Bryce, WB8VGE
SunLight Energy Systems
http://www.seslogic.com
http://www.theheathkitshop.com
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Date: Thu, 18 Mar 2004 09:55:55 -0800
From: paul hendershott
Subject: FS: Hammarlund SP-200 Super Pro: nice
I have for sale a very nice hammarlund SP-200 Super Pro along with mating power supply. I have fashioned a nice 5' power cable. The radio plays beautifully and LOUD!
Front panel almost perfect! Original black cabinet with handle in perfect physical condition but missing a little paint on top. I will include a can of semi-flat krylon or black krinkle paint which will make the cabinet appear new. I would repaint it myself, but I have some physical limitations and the radio is too heavy for me to wrestle with all alone. Includes nice copy of original manual.
Prefer pickup in Chicago area or will have a friend meet you halfway up to 100 miles from Chicago. I will include a square Hammarlund speaker (the one with the art deco squiggly-line on the grill cloth). $500 obo. Thanks for looking!
Pics available upon request - serious inquiries only
73
Paul
W9BBR
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Date: Thu, 18 Mar 2004 14:30:13 -0500
From: "Misic, George J."
Subject: Re: tales of trouble i.e. the HW5400
Don't forget the SS-9000!
George KE8RN
-----Original Message-----
From: Heathkit Owners and Collectors List
[mailto:HEATH@LISTSERV.TEMPE.GOV]On Behalf Of MIKE BRYCE
Sent: Thursday, March 18, 2004 1:23 AM
To: HEATH@LISTSERV.TEMPE.GOV
Subject: tales of trouble ie the HW5400
well boys and girls...
after spending two weeks on this HW5400 yesterday, I have come to the
conclusion that the HW5400 is the most screwed up radio heathkit ever put
out on the ham market
ah.. but your thinking that perhaps this is just one rotten egg in the
basket.
well this is number three that I have owned. All have the same problems.
1. The thing clicks when the main tuning knob is turned. Although the
receiver is muted to prevent chirping as the PPL lock and unlock as you
tune. The receiver still has a slight click as you tune the knob.
2. Unbelievable ho-hum receiver. Forget about "working the weak one" with
this HW5400. Signals 4 khz away cause the agc to pump.
3. Really goofy and I mean GOOFY power supply connections as well as speaker
connections. What were they thinking of?
4. The matching power supply runs so hot under load I would be afraid it
could catch fire. Fan cooling is a must. (Who says you need a tube rig to
warm the shack!)
5. Although a mute point now, the HW5400 is (was) just way more than joe ham
could handle. Three PLL, two VCOs, microprocessor oh my! The SB-104 is a
walk in the park compared to the HW5400
6. Personal opinion, but the knobs are way too small. Especially the volume
and RIT knobs.
All and all, I'll take the SB-104 any day. In fact, I have 23 SB-104s
sitting in the shack, and only one HW5400.
Perhaps I'll try another one and see if it is a wacked up as the one I have
now. I know the other two I did own, were not better, just as screwed up..
Will be down at dayton this year, same spots as before, 509, 510 and 511.
Drop by and say hello!
Mike Bryce, WB8VGE
SunLight Energy Systems
http://www.seslogic.com
http://www.theheathkitshop.com
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-----------------------------------------------------------
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Date: Thu, 18 Mar 2004 14:15:40 -0600
From: "George R. Griesbach W5GRG"
Subject: FS- Apache+ D-104
I have a nice Apache for sale with a nice D-104 mike and a partial copy of
the manual.
$350.00+shipping from 78013.
Pictures are here:
http://www.comforttexas.net/gallery/heathkit-Apache-TX-1
Lots of other items are here:
http://www.comforttexas.net/gallery/
Thank You
George R. Griesbach W5GRG
505 River Oaks Rd.
Comfort, Texas 78013
w5grg@comforttexas.net
http://www.comforttexas.net/w5grg
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Date: Thu, 18 Mar 2004 13:58:13 -0700
From: "Kelley, Dave"
Subject: Request from Heath and BA list operator
Greetings!
I'd like to make a request...
There are several subscribers who use a large percentage of list bandwidth
for selling their wares. This isn't a problem.
My request is that you group your postings into ONE PER WEEK at the most and
not a different post for each item you're selling.
Thank you in advance for honoring my request.
73
Dave
AI7R
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Date: Thu, 18 Mar 2004 17:34:02 -0500
From: James Montress
Subject: FS.
Heath manuals. Original assembly. Good condition.
1-GC-1005 Electronic clock. 1-QF-1 Q Multiplier.
1-HD-1234 Coaxial Switch. Current values plus
mailing from 02646 TNX. JIM.
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Date: Thu, 18 Mar 2004 19:09:03 -0800
From: Rinkie & Ron Pollack
Subject: Re: tales of trouble i.e. the HW5400
I don't know why you have trouble with Heath transmitters....My DX20 works
just fine!
Hi
K2RP
-----Original Message-----
From: Heathkit Owners and Collectors List
[mailto:HEATH@LISTSERV.TEMPE.GOV]On Behalf Of Misic, George J.
Sent: Thursday, March 18, 2004 11:30 AM
To: HEATH@LISTSERV.TEMPE.GOV
Subject: Re: tales of trouble i.e. the HW5400
Don't forget the SS-9000!
George KE8RN
-----Original Message-----
From: Heathkit Owners and Collectors List
[mailto:HEATH@LISTSERV.TEMPE.GOV]On Behalf Of MIKE BRYCE
Sent: Thursday, March 18, 2004 1:23 AM
To: HEATH@LISTSERV.TEMPE.GOV
Subject: tales of trouble ie the HW5400
well boys and girls...
after spending two weeks on this HW5400 yesterday, I have come to the
conclusion that the HW5400 is the most screwed up radio heathkit ever put
out on the ham market
ah.. but your thinking that perhaps this is just one rotten egg in the
basket.
well this is number three that I have owned. All have the same problems.
1. The thing clicks when the main tuning knob is turned. Although the
receiver is muted to prevent chirping as the PPL lock and unlock as you
tune. The receiver still has a slight click as you tune the knob.
2. Unbelievable ho-hum receiver. Forget about "working the weak one" with
this HW5400. Signals 4 khz away cause the agc to pump.
3. Really goofy and I mean GOOFY power supply connections as well as speaker
connections. What were they thinking of?
4. The matching power supply runs so hot under load I would be afraid it
could catch fire. Fan cooling is a must. (Who says you need a tube rig to
warm the shack!)
5. Although a mute point now, the HW5400 is (was) just way more than joe ham
could handle. Three PLL, two VCOs, microprocessor oh my! The SB-104 is a
walk in the park compared to the HW5400
6. Personal opinion, but the knobs are way too small. Especially the volume
and RIT knobs.
All and all, I'll take the SB-104 any day. In fact, I have 23 SB-104s
sitting in the shack, and only one HW5400.
Perhaps I'll try another one and see if it is a wacked up as the one I have
now. I know the other two I did own, were not better, just as screwed up..
Will be down at dayton this year, same spots as before, 509, 510 and 511.
Drop by and say hello!
Mike Bryce, WB8VGE
SunLight Energy Systems
http://www.seslogic.com
http://www.theheathkitshop.com
-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved. This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind. Buyer beware!
-----------------------------------------------------------
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-----------------------------------------------------------
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Date: Fri, 19 Mar 2004 09:47:04 -0800
From: "Davies, Doug A FOR:EX"
Subject: DX-40 Knobs Needed
I am in need of one of the large tuning knobs and one of the smaller grey
knobs from the front panel of a DX-40 transmitter. Anyone have any they can
part with?
Doug VA7DD
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Date: Fri, 19 Mar 2004 11:57:10 -0600
From: Frank Krozel
Subject: Re: Getting out of HW-16 and HG-10
Decided to stop working on my HW-16 and HG-10 VFO combo
HW-16 is now running but as all this old gear, things may keep coming up.
Replaced the filter cap, and now able to receive.
Power was 40 watts, but then slumped to 15 watts or so, may be the pot.
VFO not yet hooked up but looks pretty good. Using a crystal to check.
Just running out of time to fix and now what to just operate.
Call me if interested.
Frank KG9H@arrl.net.
630-924-1600
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Date: Fri, 19 Mar 2004 08:10:52 -0700
From: Dave Hollander
Subject: FS: Radios and Test Equipment
I have the following items for sale that are excess to my needs. Prices
do not include shipping. I will ship overseas.
Heathkit HW-2036 2 Meter Transceiver and HWA-202-1 Power Supply.....$45
plus shipping.
Nice cosmetic condition. Receiver and power supply work fine.
Transmitter is not working
http://members.cox.net/hw202.jpg
Eico 315 Signal Generator............$40 plus shipping
This signal generator that covers 75 kHz to 150 MHz in six bands. Output
is either a modulated or a pure RF signal. The unit works well. The
black paint on the dial bezel is peeling. Includes a copy of the manual.
http://members.cox.net/radiostuff9/eico315.jpg
Weston Model 904 Precision AC Voltmeter....$50 plus shipping
This meter measures 0-750 volts and the ranges are changed by making the
appropriate connections on the top of the meter. The ranges are: 3, 7.5,
15, 30, 75, 150, 300 and 750 volts. This is a heavy for it's size,
working unit in excellent condition.
http://members.cox.net/radiostuff9/ac_voltmeter.jpg
http://members.cox.net/radiostuff9/ac_voltmeter2.jpg
Precision Apparatus Series 85 VOM.........$25 plus shipping
Vintage well built VOM. Tested and working.
http://members.cox.net/radiostuff9/series852.jpg
http://members.cox.net/radiostuff9/series85.jpg
Knight Kit Audio Amplifier...........$35 plus shipping
Knight Kit amplifier from Allied Radio. No model number on the unit. I
believe this unit is from the late 1950's or early 1960's. I have
checked it out and it works. I had the matching tuner for this a year
ago and it too did not have a model number.
http://members.cox.net/radiostuff9/knight_amp.jpg
http://members.cox.net/radiostuff9/knight_amp2.jpg
Telefunken AM/FM Radio..............................$35 plus shipping
Vintage Telefunken AM/FM radio. The model is the Caprice 5451W. The
radio is in nice shape cosmetically with no chips or cracks. It plays
well and sounds very good on FM. AM is very weak. The dial cord is
slipping on FM but it is not broken. The two "knobs "seen on the top are
a reflection.
http://members.cox.net/radiostuff9/telefunken.jpg
http://members.cox.net/radiostuff9/telefunken2.jpg
Set of crystals for the Navy TDQ transmitter...$50 plus shipping
Their are 24 crystals of which 23 ( a few duplicates) are the original
Navy crystals; one crystal is not. The wooden box is in great shape
also. Here are the frequencies all in MHz: 5.80,12.90,13.10, 13.26,
13.50, 13.74,13.75, 13.82, 14.02, 14.02, 14.30, 15.62 ,15.64, 15.66,
15.68,15.78,15.84,15.85, 15.86,15.86,15.86,15.92,15.92, 16.00, 16.24
http://members.cox.net/radiostuff9/tdq_xtals.jpg
http://members.cox.net/radiostuff9/tdq_xtals2.jpg
Thanks for looking.
***********************************************************
Dave N7RK Boatanchors Home Page:
http://members.cox.net/n7rk
Phoenix, Arizona *DXCC Honor Roll* *WAZ#23 - 75 Meter SSB*
ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX
Boatanchor Collector Extraordinaire preferring Hallicrafters, National
and what ever else looks interesting!
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Date: Fri, 19 Mar 2004 17:21:28 -0800
From: Murray Grandy
Subject: output transformers measurement. Off topic?
Does anyone know of test equipment that will determine the impedance of
output transformers. Did Heath make any such thing. I have a bunch of
unmarked transformers and would like to know what they are. I'm talking
about the primary, primarily. Hi Hi.
Murray
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Date: Fri, 19 Mar 2004 19:38:00 -0600
From: eugene shapiro
Subject: antique rig
SEE ARRL l966 Handbook. Sideband exciter schematic. Built on 3 19" relay
rack panels. pair 7094 finals, 2200 V supply and 400 V reg supply. With
Turner mike/control. Internal fixed xtal osc OR home brew converter from
SB300 provides tunable drive for phase balanced exciter. Fully working.
make offer. Gene W0DLQ use Genro@juno.com for replies. Coverage 80 to
l0 meters.
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Date: Fri, 19 Mar 2004 20:58:39 EST
From: Wharpt@AOL.COM
Subject: Looking for a Heathkit part
I'm looking for a possible source for the 92-669 mounting plates used to
modify the 5280 series test equipment for external power. Ref: IPA-5280-1 AC Power
Supply manual, page 21, Detail 11-1B
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Date: Sat, 20 Mar 2004 10:31:51 -0500
From: Nick England
Subject: Re: output transformers measurement. Off topic?
How about using a simple voltage divider -
Connect an audio oscillator (say 2v at 1 kHz) across the series combination of
a 10K resistor and the transformer primary. Measure the voltage across the
resistor and across the primary.
Primary_impedance = 10K*primary_volts/resistor_volts.
This assumes you have the proper secondary load - make your best guess about
the 8 ohm winding and put an 8 ohm load there. If you aren't sure, vary the
secondary load connection and observe the results on the primary and make an
average estimate.
--------------------------
cheers,
Nick KD4CPL
----- Original Message -----
From: "Murray Grandy"
To:
Sent: Friday, March 19, 2004 8:21 PM
Subject: output transformers measurement. Off topic?
> Does anyone know of test equipment that will determine the impedance of
> output transformers. Did Heath make any such thing. I have a bunch of
> unmarked transformers and would like to know what they are. I'm talking
> about the primary, primarily. Hi Hi.
> Murray
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Date: Sat, 20 Mar 2004 09:03:30 -0800
From: Dale Jones
Subject: Manual
--=======36893CFD=======
Content-Type: text/plain; x-avg-checked=avg-ok-298435B4; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 8bit
Any One Have use for a Assembly Manual AR-29 AM-FM Stereo Receiver (FREE)
to a person that needs one plus 4.00 for shipping you will get your change
back. Not free to a person who is going to turn around and sell it.
Dale AA7XX
--=======36893CFD=======
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Content-Disposition: inline
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.634 / Virus Database: 406 - Release Date: 3/18/2004
--=======36893CFD=======--
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Date: Sat, 20 Mar 2004 12:19:48 -0500
From: MIKE BRYCE
Subject: SB-104 display board update
boys and girls...
after some conversations with several guys here on the reflector about the
possibility of using the original heathkit display driver IC on the new LED
display board..
the original driver ICs sink current. in the original version they sink the
current from the +180 volt supply.
in my updated LED version the 7447 sink current from the +5 supply via 180
ohm current limiting resistors
In the "why not give it a try" column I put in the original high voltage
driver and low and behold they work!
The display is not as bright and the limiting resistors would have to be
changed.. did not compute the values ... a good starting point would be 100
or 75 ohms...
now having said that, I will be offering the LED update PC board, displays,
IC sockets and original 180 resistors for $32 +$4 shipping.. Bare PC boards
are still $15+$4 shipping
this offer is only for the guys on this list, nothing will be placed on the
web site.
and there will be no warranty that the old driver ICs will withstand the
current.. it's a experiment.
Will be out of the office this weekend, going to the toledo hamfest..
anyone interested in this project, drop me a email..
parts in stock..
Mike Bryce, WB8VGE
SunLight Energy Systems
http://www.seslogic.com
http://www.theheathkitshop.com
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Date: Sat, 20 Mar 2004 12:36:13 -0500
From: MIKE BRYCE
Subject: low voltag power strip aka rigrunner knock off for heathkit radios
boys and girls..
got to many hw-8s, HW-202 and SB-104s?
only one power supply?
well it's been a long winter and I had way too much time on my hands..
so, I designed a rigrunner clone. It uses the amp power poles, fuses, leds
and by pass capacitors.
the whole shebang is connected to your power supply via a heavy duty cable.
That way you don't loose one of your power pole connectors when you hook up
power to the strip.
there will be two flavors..
one is a five outlet affair and lacks any real bells and whistles... it does
have LED fuse failure indicators. Yes, it has fuses..
version two will have 10 outlets and overvoltage, under voltage warning LED
and a few more LEDS such as power, reverse polarity and so on.
Neither version will be offered at this time with a case...
If there is enough interest, I'll have a run of PC boards made for the 5
outlet first and if enough interest will do a run of the 10 outlet pc board
prices?
the board only for the 5 outlet will be $14 +shipping
the board only for the 10 outlet will be $18 + shipping
again, if the interest is there might offer a complete kit including the
power poles..
I work in a steel mill, so having been around big heavy things ( not taking
into account my first wife) for 32 years, the design for the power strip is
industrial strength!
I ran 85 amps through the prototypes without heating the traces!
both boards are rated for 40 amps..
3 oz copper traces over a half inch wide. Double sided PC board with top and
bottom solder masks. Silk screen on the top side.
the original prototype used a "maxi" fuse but I have changed it back to the
atc type because of a problem with wrapping a case around the pcb and having
the top too high to get to the small atc fuses.
drop me an email if interested...
have fun keeping the green flame burning..
Mike Bryce, WB8VGE
SunLight Energy Systems
http://www.seslogic.com
http://www.theheathkitshop.com
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Date: Sat, 20 Mar 2004 10:12:17 -0800
From: Neil Morrison
Subject: Re: output transformers measurement. Off topic?
Basically, no, you can't do this. You can estimate the power rating
from the cross section of the core; measure the turns ratio; and
measure the open circuit impedance of the primary but that's it.
A 4K to 4 ohm transformer is also an 8K to 8 ohm transformer.
Neil
>From Scroggie:- "Radio and Electronic Lab Handbook".
11.3. A.F. TRANSFORMERS
The effective frequency band of an a.f. transformer is limited at
the low end by shunt inductance and at the high end by leakage or
series inductance. Shunt inductance, so called because it acts as a
by-pass to the transformer load impedance, is simply the inductance
of the primary. It should be measured at a low frequency, to ensure
that the effect of stray capacitance is negligible; 50 c/s is usually
suitable. Working conditions should be reproduced as nearly as
possible during measurement, as regards amplitude of a.c. and d.c.
(if any). Suitable methods are described in Secs. 9.18 to 9.22.
Leakage inductance is relatively small, and is a measure of the
extent to which the primary is not completely coupled to the
secondary. The equivalent total leakage inductance referred to the
primary is the inductance measured on the primary side when the
secondary is shortcircuited. Although it affects the high frequency
end, there is no reason why it should not he measured at the same low
frequency as the shunt inductance, except perhaps that its reactance
is then rather small.
Self-capacitance is an important parameter of intervalve
transformers, but these are now rarely used; in output transformers
it often plays only a minor part. But it may have to be considered
when the output transformer is in a negative-feedback loop,
especially since it is increased by the means adopted in the better
transformers to reduce leakage inductance—the interleaving of primary
and secondary windings. With this arrangement one may not be safe in
assuming that the stray capacitance is equivalent to a constant
capacitance in shunt with the primary and independent of frequency,
and instead of trying to measure it as such it is better to measure
the phase shift (Sec. 10.7).
The efficiency of an output transformer can be measured by means of
an output meter and a.f. signal source. The source should be adjusted
to give a suitable amount of power, measured first by the output
meter connected directly to it, and then through the transformer. If
the transformer ratio is n : 1 and its optimum load resistance R, the
resistance of the output meter should be as near as possible to n*n*R
for the first reading and R for the second. The efficiency is the
ratio of the second reading to the first, and should be measured at
the lowest, highest, and one or more intermediate frequencies.
Alternatively this power ratio can be expressed in dB (Table 14.17)
and is then called the transformer loss. For this method it is
necessary for the output-meter transformer not only to have the
appropriate pair of ratios but also reasonably equal efficiencies at
these ratios, at all frequencies concerned. If there is any doubt
about this—or if an output power meter is lacking—the measurement can
be made by a valve voltmeter or even c.r.o. across the appropriate
resistances.
An important characteristic is non-linearity, reckoned as the amount
of distortion caused under specified conditions by a specified signal
amplitude, or alternatively the maximum signal power for a specified
amount of distortion. Perhaps the most useful information, covering
both of these, is a curve of distortion against amplitude or power.
Methods are the same as for a.f. amplifiers; see Secs. 11.12 to
11.16.
It is of course most essential that working conditions or their
equivalents are reproduced—the same amount of d.c. and the same
impedances connected to the windings.
Ref: "Harmonic Distortion in A.F. Transformers", by N. Partridge.
(W.E.), Sept. to Nov. 1942.
----- Original Message -----
From: "Murray Grandy"
> Does anyone know of test equipment that will determine the
impedance of
> output transformers. Did Heath make any such thing. I have a bunch
of
> unmarked transformers and would like to know what they are. I'm
talking
> about the primary, primarily. Hi Hi.
> Murray
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Date: Sat, 20 Mar 2004 10:59:24 -0800
From: ken kuzma
FS Heathkit HRA-10-1 Crystal calibrator.In good
condition and works.
Asking 19.00 plus shipping
Thanks
Ken
=====
Please visit my web page
Http://www.heathbelts.com
Email ken@heathbelts.com
If using reply to please remove nospam from address!!
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Date: Sat, 20 Mar 2004 13:55:24 -0500
From: Mark S Graalman
Subject: Re: output transformers measurement. Off topic?
Using 60 hz at about 1 volt on the secondary and measuring the
primary will give you the turns ratio, the Z ratio would be the
square root of the turns ratio.
Mark WB8JKR
On Fri, 19 Mar 2004 17:21:28 -0800 Murray Grandy
writes:
> Does anyone know of test equipment that will determine the impedance
> of
> output transformers. Did Heath make any such thing. I have a bunch
> of
> unmarked transformers and would like to know what they are. I'm
> talking
> about the primary, primarily. Hi Hi.
> Murray
>
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> parties involved. This list and the City of Tempe are not
> responsible
> for losses or misrepresentations of any kind. Buyer beware!
>
> -----------------------------------------------------------
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> -----------------------------------------------------------
>
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>
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Date: Sat, 20 Mar 2004 14:02:14 -0500
From: "M. Kassay"
Subject: For Sale - Heathkit
For Sale... shipping extra.
HM-2140 swr / pwr meter $60 US
Brand new in box - unbuilt EE-3400 micro-processor learning lab
-- best offer
Brand new in box - unbuilt EE-3401 electronics fundamental lab --
best offer
The following are ORIGINAL manuals
******************************
SB-610 scope manual $13 US shipped
SB-614 scope manual $13 US shipped
HA-14 linear condensed manual $10 US shipped
ID-1795 rain gauge (professional copy) $9 US shipped
IG-72 audio gen manual $7 US shipped
ID-4001 wx stn assembly manual $13 US shipped
IG-102 sig gen manual $8 US shipped
SB-100 bound original $11 US shipped.
--
73 Mike
VE3MKX / VA3HKT
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Date: Sat, 20 Mar 2004 16:29:50 -0500
From: Doug Shields
Subject: Need HW-8 tuning knob
Hello all,
I am looking for the main tuning knob for an HW-8 transceiver. A friend
has an HW-8 with a very wrong knob and I would like to help him get it back
to original. Any help would be appreciated. Thanks.
Doug W4DAS
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Date: Sat, 20 Mar 2004 15:45:46 -0600
From: Lee Bahr
Subject: Re: output transformers measurement. Off topic?
While on the subject of audio output transformers, maybe someone can help me
out on this one. I need a 36 Henry choke in series with the audio plate
lead of an audio output tube. What output transformer will give me
inductance around this value? Does anyone know? (I'd like to build a
Paraset clone and it calls for a choke this size). The choke can't be too
big physically. Would a 4000 ohm or 7000 ohm output transformer have
inductance near this value (on the primary)? Sure would like to hear from
anyone who knows. That's a lot of inductance and it has to pass the current
to drive a 6SK7 audio amp. The whole transceiver is in a case approx 2 1/2
x 8 x 6 1/2 inches so I can't be using a 200 ma choke.
Thanks,
Lee, w0vt
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Date: Sat, 20 Mar 2004 17:01:10 -0500
From: "Mark V. Johnson"
Subject: Heathkit IM-103 Line Voltage For Sale
Heath Team;
I have an IM-103 Line Voltage Monitor for sale. Works great. I've
repaired it and calibrated it to my Digitial VOM. It has had a mod done
to the sides of the case that are not noticable from the front. Front
and meter are excellent. I can provide pictures. Price is $55.00 US
funds and I'll include a copy of the manual and shipping (Canada and US
lower 48) for that price. Thanks.
Mark V. Johnson VE3DJU/VE3DDI
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Date: Sat, 20 Mar 2004 17:49:53 -0600
From: "Allen E. Johnson"
Subject: Re: output transformers measurement. Off topic?
Murray -
TOA makes a very nice handheld battery operated impedance meter model
ZM-104. It is exceptionally handy when working with 70 Volt lines.
73,
Allen Johnson
WXKWM
On Fri, 19 Mar 2004 17:21:28 -0800 Murray Grandy
writes:
> Does anyone know of test equipment that will determine the impedance
> of
> output transformers. Did Heath make any such thing. I have a bunch
> of
> unmarked transformers and would like to know what they are. I'm
> talking
> about the primary, primarily. Hi Hi.
> Murray
>
> -----------------------------------------------------------
> Products bought, sold or traded here is the responsibility of the
> parties involved. This list and the City of Tempe are not
> responsible
> for losses or misrepresentations of any kind. Buyer beware!
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
> http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH@LISTSERV.TEMPE.GOV
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>
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Date: Sun, 21 Mar 2004 10:50:02 -0600
From: Ron McMurray
acquired an astatic silver eagle mike . need wiring diagram if someone =
has one or where to download one. can it be used with an hw-100 or =
sb-110 , thanks , ron
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Date: Sun, 21 Mar 2004 11:04:13 -0700
From: Kenneth King
Subject: WTB--HWA-9 WARC band pack for HW-9
I am seeking a WARC band pack for the HW-9
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Date: Sun, 21 Mar 2004 14:10:00 -0500
From: Ron Manfredi
Subject: Re: D-104 info
Rod,
Try this site:
http://www.qsl.net/wa2mzf/d104.html
73,
Ron WA2EIO
Ron McMurray wrote:
>acquired an astatic silver eagle mike . need wiring diagram if someone has one or where to download one. can it be used with an hw-100 or sb-110 , thanks , ron
>
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Date: Sun, 21 Mar 2004 14:21:08 -0600
From: Ron McMurray
Subject: silver eagle mike
thanks for the help wit my mike
someone took diagram off base plate
astatic web site had info i needed
ron
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Date: Sun, 21 Mar 2004 12:00:38 -0800
From: W6CUX
Subject: Re: d104 schematic
For the D104 schematic try the following ftp site:
ftp://216.24.174.245/astatic/d104tg/ Right click to download.
You will need the DjVu reader from either:
http://bama.sbc.edu/viewers.htm or
http://www.lizardtech.com/download/dl_options.php?page=plugins
The D104 connects to the SB-101 with audio on pin 1, PTT on pin 2 and
shield/PTT return soldered to the shield spring.
73, Stu W6CUX
----- Original Message -----
From: "Ron McMurray"
To:
Sent: Sunday, March 21, 2004 8:50 AM
acquired an astatic silver eagle mike . need wiring diagram if someone has
one or where to download one. can it be used with an hw-100 or sb-110 ,
thanks , ron
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Date: Sun, 21 Mar 2004 13:38:58 -0800
From: Edward B Richards
Subject: Wanted: DX-100B mod
Hi all;
Shortly after I built a DX-100B in 1960, I saw an article about
neutralizing the PA by adding a short, heavy wire from somewhere, up
through an existing hole near the finals. You bent the wire back and
forth to archive neutralization. It worked. Is someone aware of this mod
and can give me the info? I am interested in other mods that will improve
the performance on AM? Thanks.
73, Ed Richards K6UUZ
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Date: Sun, 21 Mar 2004 18:05:30 -0700
From: Brian Wood
Subject: Re: Wanted: DX-100B mod
Ed,
Read my article in the January QST on the DX-100 restoration. These and
other mods are referenced. Easiest way to find the mods is to go the AM
Window at http://www.amwindow.org/.
73,
Brian, W0DZ
-----Original Message-----
From: Heathkit Owners and Collectors List
[mailto:HEATH@LISTSERV.TEMPE.GOV]On Behalf Of Edward B Richards
Sent: Sunday, March 21, 2004 2:39 PM
To: HEATH@LISTSERV.TEMPE.GOV
Subject: Wanted: DX-100B mod
Hi all;
Shortly after I built a DX-100B in 1960, I saw an article about
neutralizing the PA by adding a short, heavy wire from somewhere, up
through an existing hole near the finals. You bent the wire back and
forth to archive neutralization. It worked. Is someone aware of this mod
and can give me the info? I am interested in other mods that will improve
the performance on AM? Thanks.
73, Ed Richards K6UUZ
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Date: Sun, 21 Mar 2004 20:43:57 -0600
From: Lee Bahr
Subject: Re: Wanted: DX-100B mod
I think you cut about a 6 or 8 inch piece of number 14 or number 12 house
wiring and soldered one end to the grid. Then you ran it up through a hole
in the chassis next to the side of one of the final tubes. You then bent
and moved the wire until the rig was neutralized. (I did the same thing
back then with my rig and it worked great)! The stiff wire just hung there
doing its thing.
Lee, w0vt
----- Original Message -----
From: "Edward B Richards"
To:
Sent: Sunday, March 21, 2004 3:38 PM
Subject: Wanted: DX-100B mod
> Hi all;
>
> Shortly after I built a DX-100B in 1960, I saw an article about
> neutralizing the PA by adding a short, heavy wire from somewhere, up
> through an existing hole near the finals. You bent the wire back and
> forth to archive neutralization. It worked. Is someone aware of this mod
> and can give me the info? I am interested in other mods that will improve
> the performance on AM? Thanks.
>
> 73, Ed Richards K6UUZ
>
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> for losses or misrepresentations of any kind. Buyer beware!
>
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> -----------------------------------------------------------
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Date: Mon, 22 Mar 2004 09:04:35 -0500
From: Brian Carling
Subject: FS: 25 Panel Meters from $2.00 to $12.00
For sale - 25 Panel Meters.
1) Weston Center scale 'SWR' meter with green to the left and
red to the right. No other scale. 30 uA DC movement.
2-3/4" diameter. Needs approx. 2-1/8" hole.
Available for $3.00 plus shipping
2) Triplett 0-5mA DC meter - round type. Slightly cracked glass.
3-1/2" diameter. Needs approx. 2-3/4" hole.
Available for $3.00 plus shipping
3) Weston 0-1.5 mA DC meter - excellent.
Dimensions - 3-1/4" diameter. Needs approx. 2-1/2" hole.
Available for $3.00 plus shipping
4) Weston 0-100 mA DC meter. Round type.
Dimensions 3-1/4" diameter. Needs approx. 2-1/2" hole.
Available for $6.00 plus shipping
5) Military surplus 0-200 mA DC meter.
Dimensions - 4" diameter. Needs approx. 2-1/2" hole.
Available for $3.00 plus shipping
6) Westinghouse 0-500V DC meter. Type RX-35
Dimensions - 3" square face. Needs approx. 2-3/4" diameter hole.
Available for $8.00 plus shipping
7) Westinghouse 0 - +/- 3V DC Center zero meter.
Type SX-33 protruding design for surface mount.
Slightly cracked glass. Dimensions 2-1/2" diameter.
Available for $2.00 plus shipping
8) Westinghouse 0 - 2500 V DC meter. FSD = 0.001A.
Dimensions - 3-1/2" diameter. Needs approx. 2-3/4" diameter hole.
Available for $10.00 plus shipping
9) Weston RF Ammeter. For antenna current. 0 - 10 Amps.
Includes external thermocouple.
Dimensions 2-1/2" diameter. Needs approx. 2" diameter hole.
Available for $10.00 plus shipping
10) Surplus vertical edgewise meter 0-2500V DC.
Has 2 mA movement. There is a shunt resistor attached.
Dimensions 2-3/4" X 1". Needs approx. 2" X 3/4" hole.
Available for $5.00 plus shipping
11) Phastron +/- 5 mA DC meter with center zero.
Chrome trim - extra nice looking.
Face dimensions - 4-5/8" X 4-1/4".
Needs approx. 2-3/4" diameter. hole.
Available for $5.00 plus shipping
12) Aircraft meter. Reads plus and minus 20 degrees with
1 degree scale markings. Center zero.
Dimensions - 2-3/8" square. Needs approx. 2-1/8" diameter hole.
Available for $2.00 plus shipping
13) Stromberg-Carlson VU Meter!
Typical markings form minus infinity to +3dB.
Dimensions - 3" square face. Needs approx. 2-3/4" diameter hole.
Available for $12.00 plus shipping
14) Surplus 0-100 mA DC meter.
2-5/8" diameter face. Needs approx. 2-1/4" diameter hole.
Available for $4.00 plus shipping
15) G.E. Antenna Current meter 0- 10 Amps. Type DW-52
Dimensions - 2-1/2" diameter. Needs approx. 2-1/8" hole.
Available for $8.00 plus shipping
16) Burlington 0-1 mA DC square meter.
Dimensions - 3" square. Needs approx. 2-3/4" diameter hole.
Loose inside and may be sticking.
Available for $4.00 plus shipping
17) Weston 0- 200 uA meter. Model 301.
Dimensions - 3" square. Needs approx. 2-3/8" diameter hole.
Has two scales with markings for 0 - 3 and 0-15.
Available for $4.00 plus shipping
18) General Electric 0-500V DC meter. Model VNW19-2.
1000 ohms per volt. Comes with a shunt.
Dimensions - 3-1/2" diameter. Needs approx. 2-3/4" hole.
Available for $10.00 plus shipping
19) Westinghouse Filament Meter 0 - 7.5 V AC. Very sharp.
Dimensions - 3-1/2" diameter. Needs approx. 2-3/4" diameter hole.
Available for $10.00 plus shipping
20) Surplus RF Ammeter 0 - 3 Amps RF Antenna Current.
Glass slightly loose but works OK.
Dimensions - 3-1/2" diameter. Needs approx. 2-3/4" diameter hole.
Available for $9.00 plus shipping
21) Burlington VU meter. Great for audio applications.
Has the typical scale from minus infinity to + 3dB.
Dimensions 3" square. Needs approx. 2-3/4" diameter hole.
Available for $8.00 plus shipping
22) Small Surplus VU meter - New, old stock - never used.
DeJUA brand - military style VU meter.
Dimensions - 1-3/4" square. Needs approx. 1-1/2" diameter hole.
Available for $8.00 plus shipping
23) Edgewise vertical reading 0 - +/- 50 uA meter.
Center zero with scale markings for 50 - 0 - 50 uA.
Dimensions 1-3/4" X 3/4"
QTY 2 available for $2.00 each plus shipping
24) Westinghouse Filament Meter 0-10.
Not sure if this scale is for volts or amps.
Dimensions: 4" square with rounded corners.
Needs approx. 3-3/4" diameter hole.
Available for $6.00 plus shipping
Reply by E-mail or visit:
http://www.af4k.com/meters.htm
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Date: Mon, 22 Mar 2004 10:24:14 -0500
From: Brian Carling
Subject: WTD: TUBE TESTER!
Passing this along guys, a friend of Karl's is looking for a
good tube tester. I have already sold the two that I had.
If you know of a nice tube tester for sale, please contact Karl at:
wa2kbzKarl@wmconnect.com
His new e-mail address has not worked for subscribing to
the list yet!
Please ONLY reply to Karl directly at:
wa2kbzKarl@wmconnect.com
73s - Brian
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Date: Mon, 22 Mar 2004 09:20:06 -0700
From: Kenneth King
Subject: Where can I get a band pack for the HW-9?
Does anywne know where I can obtain a WARC band pack for the HW-9 ?
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Date: Mon, 22 Mar 2004 14:01:21 -0500
From: ELWOOD TURNER
Subject: non Heath question
Hello all:
I have an Ameco nuvistor convertor model CN50W VHF convertor
Does any one have any info on it?
Thanks WOODY
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Date: Mon, 22 Mar 2004 11:10:44 -0800
From: john gabbard
Subject: TRADE
Hello Gentlemen,I have an HW8 that I have repaired and is now working
properly.I replaced the band switches that were heat damaged by the original
builder. These particular 6pdt units are sold by Surplus sales of Nebraska
but are not 4 gang as are the originals,but are identical.
I would like to trade it for a non-working HW9 W/Warc bands. I will be
happy to discuss any difference involved. Thanks, John KF7OM
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Date: Mon, 22 Mar 2004 14:48:07 -0500
From: "Paul K. Dean"
Subject: Re: non Heath question
Available on BAMA site:
CN - Manual and Parts placement photos for the Ameco 6 Meter, 2 Meter,
and 1 1/4 converters. Compliments of Jeff Harshman, N2LXM.
http://bama.sbc.edu/ameco.htm
On Mon, 22 Mar 2004 14:01:21 -0500
ELWOOD TURNER wrote:
> Hello all:
> I have an Ameco nuvistor convertor model CN50W VHF convertor
> Does any one have any info on it?
>
> Thanks WOODY
>
> _________________________________________________________________
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Date: Mon, 22 Mar 2004 14:53:32 -0500
From: "TChesek@Epix.Net"
Subject: Heath HD-3030 Terminal Interface
I am looking for a manual for the HD-3030 Terminal interface, or at the =
very least the operating/interface instructions. Can anyone assist me?
73,
Tom k3tvc
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Date: Mon, 22 Mar 2004 12:13:47 -0800
From: Murray Grandy
Subject: re output transformer testing.
Thanks for all the ideas on selecting a output transformer. I was able to
find a suitable one in the bunch.
Murray
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Date: Mon, 22 Mar 2004 16:54:40 -0500
From: ELWOOD TURNER
Subject: Ameco convertor
Hello all;
Thank s to everyone who responded to my question.
I now know a lot more than I did before posting here.
Again Thanks WOODY
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Date: Mon, 22 Mar 2004 14:50:18 -0800
From: Glen Zook
Subject: Re: non Heath question
The information on the nuvistor Ameco converters is on
BAMA at http://bama.sbc.edu
If you have problems downloading (get an error message
that too many people are using the system) go back to
the home page and "click" on the mirror site. There
are 5 times as many download possibilities on that
site.
The "W" after the model number says that it was
"factory wired". The Ameco converters were sold both
wired and as kits.
I have several of the various nuvistor converters as
well as the older "plain" tube types. These are for
50 MHz, 144 MHz, and 222 MHz. They work very well.
If the crystal is 22 MHz then the i.f. is 28 MHz = 50
MHz. If the crystal is 36 MHz then the i.f. is 14 MHz
= 50 MHz. If the crystal is 43 MHz then the i.f. is 7
MHz = 50 MHz. Also they came with a crystal of 40 MHz
where 10 MHz = 50 MHz and with a crystal of 19.5 MHz
where 30.5 MHz = 50 MHz. The last crystal was for
using the converter with the National NC-300/NC-303 or
the Hallicrafters SX-101 series which both had a
"converter" band of 30.5 MHz to 34.5 MHz.
Also, you sometimes run into one that has been changed
to use with the Heath Mohawk that had a converter band
of 22 MHz to 26 MHz. Those will have a crystal of 28
MHz.
Glen, K9STH
--- ELWOOD TURNER wrote:
> Hello all:
> I have an Ameco nuvistor convertor model CN50W VHF
> convertor
> Does any one have any info on it?
>
> Thanks WOODY
>
>
_________________________________________________________________
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> it now!
>
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>
>
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> beware!
>
>
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=====
Glen, K9STH
Web sites
http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco
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Date: Mon, 22 Mar 2004 20:18:29 -0800
From: Dale Jones
Subject: Manuals
--=======656FB3=======
Content-Type: text/plain; x-avg-checked=avg-ok-4FC44D17; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 8bit
I believe ther was a ham whose name was Harmon who collects manual and than
loan them out , to the needy, Would this person get into touch with me, I
may have a manual you might want. Dale AA7XX
--=======656FB3=======
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Content-Disposition: inline
---
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Checked by AVG anti-virus system (http://www.grisoft.com).
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Date: Tue, 23 Mar 2004 09:41:05 -0500
From: "TChesek@Epix.Net"
Subject: Request for HD-3030 manual
Thank you to those who responded regarding my request for the HD-3030 =
manual. I am following up with the first person who responded. It's nice =
to know that there is so much help out there!
73,
Tom k3tvc
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Date: Tue, 23 Mar 2004 09:27:14 -0800
From: Rinkie & Ron Pollack
Subject: AT1 Question
I am about finished restoring an AT1 in nice cosmetic condition, but someone
has converted it to a 6146 final. (Why, I don't know!) It works great with
a crystal, but when I short out the cathode to ground on the ocsillator tube
to use with the VFO, as instructed, the plate current pegs without the key
being pressed. I'm not too technical a type, but it seems that perhaps the
final is self oscillating? Is there a way to use the VFO without bypassing
these parts?
I would like to convert this back to 6L6 operation, but don't know if the
amplifier coils have been modified. Anyone know anything about this
conversion, or how to tell if the coils have been modified? I have a copy
of an old QST article describing conversion to a sweep tube (I think) that
requires coil mods.
Thanks for any advice!
Ron K2RP
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Date: Tue, 23 Mar 2004 17:33:43 -0500
From: Mark S Graalman
Subject: Re: AT1 Question
I'm not familiar with the AT1, but it may be possible that
in the original setup the Oscillator and final were cathode keyed
at the same time, and when you placed the oscillator cathode to
ground you also keyed the final and if there is little or no RF
drive present then no grid leak bias can be developed and
thus the high idle plate current.
Mark WB8JKR
On Tue, 23 Mar 2004 09:27:14 -0800 Rinkie & Ron Pollack
writes:
> I am about finished restoring an AT1 in nice cosmetic condition, but
> someone
> has converted it to a 6146 final. (Why, I don't know!) It works
> great with
> a crystal, but when I short out the cathode to ground on the
> ocsillator tube
> to use with the VFO, as instructed, the plate current pegs without
> the key
> being pressed. I'm not too technical a type, but it seems that
> perhaps the
> final is self oscillating? Is there a way to use the VFO without
> bypassing
> these parts?
>
> I would like to convert this back to 6L6 operation, but don't know
> if the
> amplifier coils have been modified. Anyone know anything about this
> conversion, or how to tell if the coils have been modified? I have
> a copy
> of an old QST article describing conversion to a sweep tube (I
> think) that
> requires coil mods.
>
> Thanks for any advice!
>
> Ron K2RP
>
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Date: Tue, 23 Mar 2004 14:57:34 -0800
From: Steve Smith
Subject: Re: AT1 Question
In the stock AT-1, the oscillator is -not- keyed, only the PA cathode.
The oscillator runs whenever the plate switch is "on". So you are
correct, the key should not be closed unless there is proper excitation.
73.......Steve Smith WB6TNL
Oxnard, CA USA
"Snort Rosin"
On Tue, 23 Mar 2004 17:33:43 -0500 Mark S Graalman
writes:
> I'm not familiar with the AT1, but it may be possible that
> in the original setup the Oscillator and final were cathode keyed
> at the same time, and when you placed the oscillator cathode to
> ground you also keyed the final and if there is little or no RF
> drive present then no grid leak bias can be developed and
> thus the high idle plate current.
>
> Mark WB8JKR
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Date: Wed, 24 Mar 2004 06:44:57 -0800
From: FRED HOLNAGEL
Subject: Items F/S
Manual for HW-8 transceiver. Good condition, marked, has large =
pictorials and schematic. $14.00
Power supply manual HWA-7-1, marked good condition. $5.00
Crossfire HD 3006 less power cord. Unchecked, return privaleges. No =
manual. 9 out of 10. $15.00
Code Osc. as new condition. Model HD- 1416 $19.95
100 KC. Xtal, long type from Heath, $8.50.
Mobile Speaker HS-24. Has wing nuts, no bracket.Looks good. Tested O.K. =
$25.00
Panel meters, your choice. One marked Decibels, one marked ALC. $10.00 =
each. Good plastic faces.=20
Mobile bracket for singlebander. Top surface has enlarged mounting =
holes and lack of paint but sides are O.K. $15.00
All above plus shipping from 98661
I have many parts for SB-401 XMTR. No Xtals. Good power transformer # =
54-198, Full set of tubes etc., switches. What do you need? Fred W7PRV
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Date: Wed, 24 Mar 2004 15:05:43 -0700
From: LBRTY4US@AOL.COM
Subject: Re: Heath A9 amplifiers
A late reader here. :-) Just got an A9B. Noted it has a fusible
resistor in its ac supply on a separate strip not called out on that
fuzzy/bad online A9C schem, probably other changes too as you allude to.
Has a grey hammertone chassis. If U hv that schem in electronic form I
cld use it as well. :-)
"Museum" site calls 9C a '58, possibly the B is '57?
Did find a page of independent hobbyist tests run on many OPT's incl this
amp's 51-14, and it came out poorly - but his testbed was 6550's. OPT has
a reflected Z of 8k using the 8z spkr tap.
Also hv had an A-10 for a long time, hv never seen a schem or specs
anywhere, M-site only has pic. Very different from A9, 2xEL34 & 6AN8/A,
beefy horiz OPT, gold chassis w/cage, bias adj. Refurbed 3 yrs ago (&
only bench burned-in to dummy, no listen), found selection of a hot 6AN8
critical to output pwr, went thru 6-7 NOS B4 finding a nice one, though
all tested high on TV-7-D/U. AIRC the best was a no-name oddball. May or
may not relate to the pwr bottles I used (late '60's NOS Sylvania-boxed
double-halo Mullards).
Any performance reviews/remarks of these amps online anywhere (yup I
searched)? With the huge efficent cabs of the day, they prob kicked butt
with low wattage...
Frank
On Tue, 17 Feb 2004 22:53:39 -0500, Chris Campbell
wrote:
>I just mailed a copy of the A-9B schematic out (Heath sent it to me
>years ago). I compared it to a fuzzy print of the A-9C schematic from
>the internet. There was a voltage divider or something in the power
>supply of the -C that was not there on the -B. I have not pulled my -A
>model from strorage to see what it has. But that P.S. change was the
>only one I spotted. There must be others.
>
>Chris Campbell
>
>Fred wrote:
>
>>I normally am interested in Heath Ham gear but the postings on the A9
series amplifiers made me pull one I have out. What are the differences
between the A,B, and C versions. I thought I remembered a version with a
gold chassis the same color as the W5. I found an original book for the
A9C and it shows one of the filter caps in series with bleeder resistors
across them. The one I have doesn't use this setup and looks totally
original underneath.
>>I found the one I own has had a pilot lamp mounted through the center
chassis hole which was normally covered with the control plate #205-
M20F161. Unfortunately, the model number of the amp on the plate was
damaged when someone drilled a hole through it so I am not sure which
version I have. Mine has a grey chassis. This brings me back to the
question: Would anyone on this list have a control plate they would like
to sell?
>>
>>Thanks,
>>
>>Fred
>>WA3KIO
>>
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>>for losses or misrepresentations of any kind. Buyer beware!
>>
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>>-----------------------------------------------------------
>>
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>>
>>
>>
>>
>
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>for losses or misrepresentations of any kind. Buyer beware!
>
>-----------------------------------------------------------
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>-----------------------------------------------------------
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Date: Wed, 24 Mar 2004 20:24:08 -0800
From: rhc
Subject: Heath V-7-A for sale
I have a Heathkit V-7-A vacuum tube voltmeter for sale for $5.00 as is. I
have checked all functions and every things to is in spec. except for the
500 volt and 1500 volt ac and dc range which are out of tolerance by over
20%. The two high voltage range multiplier resistors our over 20 % out of
tolerance. Replacing these resistors would correct the problem.
The meter movement is in good condition and is balanced. The case is in
fair condition. The left hand function knob has a section broken out of the
skirt. I can furnish a photo of the VTVM.
The only lead with the meter is the DC probe lead.
Shipping is 4 lbs from zip code 95662
Dick Cook
W9NAH
http://www.quiknet.com/~rhc
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Date: Thu, 25 Mar 2004 07:00:39 -0800
From: john gabbard
Subject: FS
I have (2) HW8's operating to spec one has no power cord and its cheaper .
Both have full doc's and a copy of the HW8 Handbook.
I am asking $125. and $115. shipped lower US. Thanks, John KF7OM
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Date: Thu, 25 Mar 2004 09:15:53 -0800
From: rhc
Subject: Heath V-7-A
Thanks to all of you who offered to buy the Heath V-7-A. I sold it to the
party with the earliest posting. I have a Heath IM-16 with manual but no
leads that I will be selling soon. I want to check out and calibrate it if
possible.
Dick Cook
W9NAH
http://www.quiknet.com/~rhc
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Date: Thu, 25 Mar 2004 09:27:43 -0800
From: Rinkie & Ron Pollack
Subject: Manual for IG102
Anyone out there able to copy the schematic and troubleshooting as well as
operating part of the manual for the IG102 RF Generator?
Thanks!
Ron K2RP
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Date: Thu, 25 Mar 2004 14:35:12 -0800
From: john gabbard
Subject: Icom 735
I am looking for a readable schematic. will re-emburse Thanks john KF7OM
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Date: Fri, 26 Mar 2004 15:43:15 -0600
From: eugene shapiro
Subject: For Sale items
for sale: Heath Cantenna dummy load.$25.00 Silent Tune UP, permits tuning
rig to dummy load, includes meter for SWR. $20.00 reply Genro@juno.com.
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Date: Sat, 27 Mar 2004 04:47:06 -00
From: s1966
Subject: For Sale items
I have for sale 3 original Heathkit manuals. They are hd-1515 phone
patch manual; ib-1103 frequency counter manual; electronic design
experimenter manual et-3100a with the 3100a experimenter, all for
$20 includes shipping. ALSO still looking for the heathkit am radio,
gray case color, that was always featured in the heathkit catalogs of
the 80s. Use the above email address for immediate reply.
Thanks
Lloyd
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Date: Sat, 27 Mar 2004 09:09:59 -0500
From: Ed Nell
Subject: FS: Various Items
Subject: FS: Equipment and Manuals. Prices do not include shipping from
07728.
I have the following equipment for sale:
AG-10 Sine-Square Generator, clean for it's age, couple of
scratches -$15
Untested, doesn't light up.
ET-3400A Microprocessor Trainer, with manual, flip chart and some other
parts. - $60
GD-1B Grid Dip Meter (dark gray face) No coils. - $10
GD-1B Grid Dip Meter (light gray face) No coils. -$10
GW-17A Soldering Iron, chisel tip, has some scratches, works -$18
HD-16 Code Oscillator, - $15
HM-11 SWR Meter , clean, have two. - $10 ea
HW-30 Twoer with manual. very clean, modified with crystal door) -$45
Original mic -
IG-62 Color Bar Generator clean. - $15
IG-102 RF Signal Generator, clean. - $25
IM-13 Vacuum Tube Voltmeter, clean and works fine, test
eads,bench -$20
mount.
IM-13 Vacuum Tube Voltmeter, clean, two pieces of scotch tape -$15
On meter, ham call sign engraved on bottom of meter (mount
hides engraving), test leads. Meter works but not accurate,
needs some work.
Im-1210 Digital Voltmeter, lights up but does not func properly - $10
Two for $15
IM-1210 Digital Voltmeter, doesn't light up. $10
IM-3117 Decade Resistance Box, some small scratches -$10
IT-10 Transistor-Diode Checker with manual - $15
IT-11 Capacitor Checker - $40
IT-18 Transistor Tester in case - $11
(some spectacle of white paint on case)
VC-2 Voltage Calibrator - $12
Vallhalla Scientific HV Digital Multimeter (+/- 15 KVDC). - $45
Clean and works. No probes.
Fluke Digital Voltmeter Model 8600A. Clean, works but no handle - $45
No probe.
International, manual three position RF switch model 11-112 - $5
I have the following manuals for sale:
Prices include shipping.
AS-2U Acoustic Suspension Speaker - $9
CI-1040 12-Volt Auto Timing Light - $7
GD-1026 Emergency strobe Light -$7
Solid-State Color TV books 1,4 and 5 - $14
Pictures can be provided off line.
enell@optonline.net
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Date: Sat, 27 Mar 2004 09:57:50 -0600
From: Bill Priakos
Subject: need a meter
Looking everywhere for a meter for an AT-1. Help! Bill, W5SJ
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Date: Sat, 27 Mar 2004 15:37:55 -0600
From: eugene shapiro
for sale
MFJ signal enhancer ll tunable ssb/cw $50.00.swr/ pw meter from QST l980
Handbook, exact copy $50.00.Bifilar fil. xformer for grounded grid
amplifiers, porcelain stands $10.00.two Weston center zero meters with
switches for l to 500 MA in case $50.00. GE RF meter5 amps in
case/connectors $ 25.00.two home brew audio osc with analog and pulse
outputs each $35.00. reply Genro@juno.com noise bridge $25.00.
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Date: Sat, 27 Mar 2004 17:30:43 -0800
From: Rinkie & Ron Pollack
Subject: IG102 Manual
Thanks to all who responded to my request for the manual for the RF sig gen.
I was overwhelmed with offers, and have it on the way.
Thanks again
Ron K2RP
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Date: Sat, 27 Mar 2004 17:29:54 -0800
From: Rinkie & Ron Pollack
Subject: HW7 Mod
I recently acquired a real nice HW7 from a gent on this list, and it's fine.
I have a 1410 keyer, and it wouldn't work with it. Poring thru the keyer
manual I found that there is an easy mod requiring just replacing 2
resistors and switching a connection.
Here's the caution: One of the resistors was R39, which originally was 470
ohms. When I located the resistor via the circuit board drawing, it was
only 33 ohms. Problem was, there is a misprint on the circuit board drawing
(same on both sides) where R39 appears in 2 places. The 33 ohm is really
R34.
Thought I'd let the group know, so you can correct the manual in case of
future mods or difficulty. The keyer works fine with the HW7 now.
Regards to all, and thanks for all the help in the past.
Ron K2RP
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Created by: Steve Modena, AB4EL
Last updated: Thursday October 23, 2008
Comments and suggestions to: modena@ibiblio.org