20090109.ba v04_n237.bam.20090109 >From ???@??? Fri Jan 9 14:54:02 2009 -0600 Date: Fri, 9 Jan 2009 14:53:12 CST From: Old Tube Radios To: Old Tube Radios Subject: BOATANCHORS digest 4237 Message-Id: <20090109205314.A271D10AF93@srvr1.theporch.com> BOATANCHORS Digest 4237 Topics covered in this issue include: 1) Re: Insulated Gate Bipolar Transistors by "Wilson Lamb" 2) Re: Another way to skin the... eerr, tell the time. by "K0DAN" 3) Re: Another way to skin the... eerr, tell the time. by "Paul Kraemer" 4) Re: Insulated Gate Bipolar Transistors by "David Stinson" 5) Re: BOATANCHORS digest 4231 by "Ken" 6) Radio Equipment Available by Jerry Proc 7) Pogo said: by stuck in 50s 8) Re: Pogo said: by David Hollander 9) Re: Pogo said: by "Arden Allen" 10) HP 8640B sig gen question by "Jim Garland" <4cx250b@muohio.edu> 11) HP 8640B sig gen question by "Jim Garland" <4cx250b@muohio.edu> 12) Re: Source of tube tester schematics and other info by Richard Loken 13) New Customer for KSM by Richard Dillman 14) Re: Pogo said: by wb3fau@att.net 15) Re: Another way to skin the... eerr, tell the time. by ail0@att.net 16) EICO by "Paul Kraemer" 17) Collins part identification please by Larry B 18) Big Receiver available in LA area by "Nick England" ---------------------------------------------------------------------- Message-ID: <12B1FD8E3C57403D968EF89BD1054EB9@wilsonspc> From: "Wilson Lamb" To: Old Tube Radios Subject: Re: Insulated Gate Bipolar Transistors Date: Sat, 3 Jan 2009 11:47:46 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit I thought he was talking about using them as a modulator, looking like a variable resistor in series with the class C output stage?? WL ----- Original Message ----- From: "Arden Allen" To: "Old Tube Radios" Sent: Friday, January 02, 2009 6:27 PM Subject: Re: Insulated Gate Bipolar Transistors > Pulling my head out of where the sun don't shine, here's what I should > have > wrote about IGBT's being used as an RF power amp: A MOSFET gate's input > resistance is virtually infinite at DC and gradually decreases with signal > frequency due to the "Miller" gate-drain capacitance. With a MOSFET > driving > the base of a transistor the drain is clamped to the base-emitter forward > voltage thus vastly reducing the Miller effect. Also, driving the > essentially pure capacitance of a MOSFET gate is easier to accomplish than > driving the complex impedance variation of a bipolar. Still though, > biasing > for linear operation is fraught with problems with MOSFET's unless one > opts > for class B or "zero bias" operation. That's what makes class D > (switching) > operation so attractive. Class C with tubes is reasonably self adjusting > but tubes also have reasonably low transconductances compared to power > MOSFETS. You'd have to come up with something akin to grid current > biasing > to operate Class C with a MOSFET, I imagine. I'm obviously not an expert > (nor in much anything else, for that matter) but I do know how to > breadboard > stuff before even dreaming about what the outcome could be. Horse before > buggy theorem.... > > Arden Allen > KB6NAX > ------------------------------ Message-ID: <008401c96dc4$44ae9700$6601a8c0@K0DAN> From: "K0DAN" To: Old Tube Radios Subject: Re: Another way to skin the... eerr, tell the time. Date: Sat, 3 Jan 2009 10:25:48 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit >From time to time (sorry, pun not intended, but convenient) Sam's Club (and probably other box stores) have large "atomic" WWVB wall clocks, about 12" square, with bith big 2-3" numerals for about $20. They are wood trimmed and look very nice, also show day/date/time/indoor+outdoor temp, etc.). I bought two, set one to Zulu and one to local time, hung them both near the window in the hamshack. They work great...I don't pay attention to how often I look at them, but I'll betcha they're one of the most-used tools in my hamshack! I believe most of these so-called "atomic clocks" are internally programmed to set time during local darkness, ie in the wee hours of the pre-dawb, when VLF propagation is possible, so chances are these clocks/watches are only reset once per day (if that). I have a small one in my kitchen, which NEVER resets. It's about 10' from the window, but probably signals are blocked by the refrigerator, household wiring, etc. Occasionally, when I notice it has no clue what time it is, I put it in the window for 24 hours and it comes to its senses. These are neat gadgets, and the price is right. But then, so's your PC operating system and the internet. 73 Dan K0DAN ----- Original Message ----- From: "Ken" To: "Old Tube Radios" Sent: Saturday, January 03, 2009 8:08 AM Subject: Re: Another way to skin the... eerr, tell the time. > Hi Herbert & Gang, > > The "atomic" clocks are slaved to a 60 Kcs. signal from Colorado > and are also available in wrist watches. I have both and rely on > them. Actually, I have 3 clocks and one wrist watch! > The wrist watch does not give the month, day, etc. and has a > sweep second hand instead of a digital readout. > There is also a "two alarm" model available here at Wal Mart > which I was glad to find. I exercise my legs mornings before > I get up - I am paraplegic. Then, the second alarm notifies me > when it is time to get up. I meet the WWCW net at 6 AM. > FWIW, take care, > > Ken N5CM > > ----- Original Message ----- > From: "Herbert M. Rosenthal" > To: "Old Tube Radios" > Sent: Friday, January 02, 2009 10:10 PM > Subject: Another way to skin the... eerr, tell the time. > > >> I bought an 'atomic clock'... one that keeps time from Boulder... for >> about $20 (battery not included.) One AA cell lasts for a year or so, >> and as John Cameron Swayze (remember him?), used to say for Timex, "It >> takes a lickin' and keeps on tickin' ". >> >> Just about anyone sells them, and in several sizes.... probably for sale >> through a GOOGLE. One sets the time zone, installs the battery and in an >> hour or so, it synchs with WWVB on 50 Hz, I think. I've dragged tis one, >> about 4" square, to FDs, dropping it as I went, and it's always in synch >> with WWV, etc. It also gives D/M/Y once set. >> >> Try it, you'll like it. >> >> Herb W5AN >> Albuquerque > > ------------------------------ Message-ID: <32B2D17C286A4F9386593FA372CD129F@ENGR2> From: "Paul Kraemer" To: Old Tube Radios Subject: Re: Another way to skin the... eerr, tell the time. Date: Sat, 3 Jan 2009 11:31:26 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit Had excellent luck with the several I had purchased there. They do not like being very close to the microwave or the circuit with the ceiling light dimmer. Other than that, problem free. Paul K0UYA ----- Original Message ----- From: "K0DAN" To: "Old Tube Radios" Sent: Saturday, January 03, 2009 10:25 AM Subject: Re: Another way to skin the... eerr, tell the time. > >From time to time (sorry, pun not intended, but convenient) Sam's Club > >(and > probably other box stores) have large "atomic" WWVB wall clocks, about 12" > square, with bith big 2-3" numerals for about $20. They are wood trimmed > and look very nice, also show day/date/time/indoor+outdoor temp, etc.). I > bought two, set one to Zulu and one to local time, hung them both near the > window in the hamshack. They work great...I don't pay attention to how > often I look at them, but I'll betcha they're one of the most-used tools > in my hamshack! > > I believe most of these so-called "atomic clocks" are internally > programmed to set time during local darkness, ie in the wee hours of the > pre-dawb, when VLF propagation is possible, so chances are these > clocks/watches are only reset once per day (if that). I have a small one > in my kitchen, which NEVER resets. It's about 10' from the window, but > probably signals are blocked by the refrigerator, household wiring, etc. > Occasionally, when I notice it has no clue what time it is, I put it in > the window for 24 hours and it comes to its senses. > > These are neat gadgets, and the price is right. But then, so's your PC > operating system and the internet. > > 73 > > Dan > K0DAN > > > ----- Original Message ----- > From: "Ken" > To: "Old Tube Radios" > Sent: Saturday, January 03, 2009 8:08 AM > Subject: Re: Another way to skin the... eerr, tell the time. > > >> Hi Herbert & Gang, >> >> The "atomic" clocks are slaved to a 60 Kcs. signal from Colorado >> and are also available in wrist watches. I have both and rely on >> them. Actually, I have 3 clocks and one wrist watch! >> The wrist watch does not give the month, day, etc. and has a >> sweep second hand instead of a digital readout. >> There is also a "two alarm" model available here at Wal Mart >> which I was glad to find. I exercise my legs mornings before >> I get up - I am paraplegic. Then, the second alarm notifies me >> when it is time to get up. I meet the WWCW net at 6 AM. >> FWIW, take care, >> >> Ken N5CM >> >> ----- Original Message ----- >> From: "Herbert M. Rosenthal" >> To: "Old Tube Radios" >> Sent: Friday, January 02, 2009 10:10 PM >> Subject: Another way to skin the... eerr, tell the time. >> >> >>> I bought an 'atomic clock'... one that keeps time from Boulder... for >>> about $20 (battery not included.) One AA cell lasts for a year or so, >>> and as John Cameron Swayze (remember him?), used to say for Timex, "It >>> takes a lickin' and keeps on tickin' ". >>> >>> Just about anyone sells them, and in several sizes.... probably for sale >>> through a GOOGLE. One sets the time zone, installs the battery and in an >>> hour or so, it synchs with WWVB on 50 Hz, I think. I've dragged tis one, >>> about 4" square, to FDs, dropping it as I went, and it's always in synch >>> with WWV, etc. It also gives D/M/Y once set. >>> >>> Try it, you'll like it. >>> >>> Herb W5AN >>> Albuquerque >> >> > ------------------------------ Message-ID: From: "David Stinson" To: Old Tube Radios Subject: Re: Insulated Gate Bipolar Transistors Date: Sat, 3 Jan 2009 11:38:00 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit ----- Original Message ----- From: "Wilson Lamb" Subject: Re: Insulated Gate Bipolar Transistors >I thought he was talking about using them as a modulator, looking like a > variable resistor in series with the class C output stage?? Yes; that's exactly right. ------------------------------ Message-ID: <004301c96ddf$f7714520$020fa8c0@ken> From: "Ken" To: Old Tube Radios Subject: Re: BOATANCHORS digest 4231 Date: Sat, 3 Jan 2009 12:15:04 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi Tom, The repeated mention of a "crystal controlled 47 oscillator" brings back memories. My first ham transmitter was a 47 in a "Pull-Pull" oscillator circuit one tube transmitter (flea pwr). I have been trying to track down the article which appeared in QST's Hints & Kinks I feel certain and would have been as late as May 1938 QST or an issue before that! It is not included in the CD's. If you ever encounter the article please send me a copy! I'll be only too glad to reimburse your expenses! 73, Ken N5CM ----- Original Message ----- From: "Tom Bridgers" To: "Old Tube Radios" Sent: Saturday, January 03, 2009 8:33 AM Subject: RE: BOATANCHORS digest 4231 Hey JP, If the QST's are still available, I'd like to buy them. Thanks, -Tom Date: Thu, 25 Dec 2008 12:43:36 -0600From: boatanchors@theporch.comTo: boatanchors@theporch.comSubject: BOATANCHORS digest 4231 BOATANCHORS Digest 4231 Topics covered in this issue include: 1) Need SX-43 ------------------------------ Date: Sat, 3 Jan 2009 13:40:55 -0800 (PST) From: Jerry Proc Subject: Radio Equipment Available To: Old Tube Radios Cc: Dean Owen , 19 Set Mail List <19set@yahoogroups.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Message-ID: <218972.431.qm@web90607.mail.mud.yahoo.com> Hello Everyone, I just received this e-mail. If anyone is interested please contact Dean Ow= en directly at . Do not =E2=80=9CReply To=E2=80=9D me= since I know nothing more about the equipment other than what is posted in= this forward. The seller is Canadian. My only involvement here is the e-ma= il forward. The two photos attached to the original e-mail are posted here: http://jproc.ca/test/Storage%20034.JPG http://jproc.ca/test/Storage%20035.JPG =20 ***** [Beginning of Forwarded text] Hello,=20 I was just going through the internet trying to look up Radio bits that I h= ave picked up over time ( I am not a radio collector) and found, through yo= ur site that one of the AM units I have is a Bendix RA 10 DB out of a Mosqu= ito bomber !!! I have a lot of AM Marked Radio units as well as parts, as = I mentioned, I do not colllect radios, I collect Military items..however wh= en I come across Military Radios I try to grab them...do you know anyone th= at may be interested in mIlitary Radios and parts..I have everything from p= lugs to dynamotors and everything in between...I have included a couple of = photos of just a smalll fraction of the radio equipment I have =20 There are people in the Uk interested in some of it..but the cost of shippp= ing is the killer..if you or anyone you kknow may be iinterested in some of= this...let me know,, I woulld be willing to meet up with them and show my = hoard. =20 Thank you for your site. =20 Dean =0A=0A=0A ____________________________________________________________= ______=0ALooking for the perfect gift? Give the gift of Flickr! =0A=0Ahttp:= //www.flickr.com/gift/ ------------------------------ Date: Sat, 3 Jan 2009 17:25:40 -0500 (EST) From: stuck in 50s Message-Id: <200901032225.n03MPeNt014841@fracas.netboobie.org> To: Old Tube Radios Subject: Pogo said: "We have met the enamy & he is us" This in reference to audiophoolery & most lately some TV-7@ebay big $$$ Went to a big-name hamb job reseller's this morning & gaped at their microphone salon. It's a place where you can spend more on a mic than an xcvr. Mikes play into a sound carded pc for check-out on playback. Buyers seem to hope they'll find an example that makes Alvin of the chipmunks sound like Pavarotti. Same buyers probably don't consider mic will be restrained to 300-3000hz on xmt AND rcv. And this flim-flam in a grand-scale ham store awreddy? I ask u. As Pogo said "We have met the enemy & he is us" Marty fm dixie ------------------------------ Message-ID: <495FE84D.3050900@cox.net> Date: Sat, 03 Jan 2009 15:35:57 -0700 From: David Hollander MIME-Version: 1.0 To: Old Tube Radios CC: Old Tube Radios Subject: Re: Pogo said: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit "Buyers seem to hope they'll find an example that makes Alvin of the chipmunks sound like Pavarotti" That is one of the funniest lines I have heard!! Still laughing!! *********************************************************** Dave N7RK Boatanchors Home Page: http://members.cox.net/n7rk Phoenix, Arizona *DXCC Honor Roll* *WAZ#22 - 75 Meter SSB* ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX Boatanchor and Antique Radio Collector ------------------------------ Message-ID: <001301c96dff$88f2ee80$659e480c@KB6NAX> From: "Arden Allen" To: Old Tube Radios Cc: "Old Tube Radios" Subject: Re: Pogo said: Date: Sat, 3 Jan 2009 16:00:54 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit > "Buyers seem to hope they'll find an example that makes Alvin of the > chipmunks sound like Pavarotti" May they rest in peace.... Arden Allen KB6NAX ------------------------------ From: "Jim Garland" <4cx250b@muohio.edu> To: Old Tube Radios Subject: HP 8640B sig gen question Date: Sat, 3 Jan 2009 20:35:49 -0700 Message-ID: <023c01c96e1d$8a9d95a0$bd00a8c0@Garland> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_023D_01C96DE2.DE3EBDA0" This is a multi-part message in MIME format. ------=_NextPart_000_023D_01C96DE2.DE3EBDA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi all, The tuning control on my 8640B has stiffened up greatly over the past few years, presumably because of dried lubricant. When it warms up, it turns much easier. I took the bottom cover off the generator and the nylon gears ganged to the tuning shaft turn easily. The problem seems to be inside A3, the RF oscillator module, which is directly ganged to the tuning dial. The service manual says not to take the module apart, but to send it back to the factory if necessary (fat chance), Anybody had this problem and tried to dig into the RF oscillator? Tnx, Jim W8ZR ------=_NextPart_000_023D_01C96DE2.DE3EBDA0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ------=_NextPart_000_023D_01C96DE2.DE3EBDA0-- ------------------------------ From: "Jim Garland" <4cx250b@muohio.edu> To: Old Tube Radios Subject: HP 8640B sig gen question Date: Sun, 4 Jan 2009 07:26:11 -0700 Message-ID: <025f01c96e78$654c4d40$bd00a8c0@Garland> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi all, The tuning control on my HP 8640B has stiffened up greatly over the past = few years, presumably because of dried lubricant. When it warms up for an = hour, it turns much more easily.=A0 I took the bottom cover off the generator = and the nylon gears ganged to the tuning shaft turn easily. The problem = seems to be inside A3, the RF oscillator module, which is directly ganged to the tuning dial shaft. The service manual says not to take the module apart, = but to send it back to the factory if necessary (fat chance). The manual = says that reassembly takes special (unspecified) skills. Anybody had this problem and tried to dig into their RF oscillator?=20 Tnx, Jim W8ZR ------------------------------ Date: Mon, 05 Jan 2009 11:13:30 -0700 From: Richard Loken Subject: Re: Source of tube tester schematics and other info To: Old Tube Radios Cc: Old Tube Radios Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII On Tue, 30 Dec 2008, Deane McIntyre wrote: > A few years ago I posted to the lists looking for a schematic > for a Stark 9-11 tube tester with no results. I came across > this last night: > > Dean, that is a real treasure! There is not only the 9-11 but the ubiquitous Stark 9-66 and my badly behaved Stark 12-22 for which I have never been able to find any service data. Great find! I have a badly mauled (by me) Stark 9-11 around the house if you would like a second one... -- Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father Athabasca University : but you have to earn Athabasca, Alberta Canada : the title of 'daddy'" ** richardlo@admin.athabascau.ca ** : - Lynn Johnston ------------------------------ Message-ID: <8439390.1231182322271.JavaMail.root@elwamui-rustique.atl.sa.earthlink.net> Date: Mon, 5 Jan 2009 14:05:22 -0500 (EST) From: Richard Dillman To: Old Tube Radios Subject: New Customer for KSM Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit We had the pleasure of working a new ship at KSM on Saturday. The pleasure was even greater because is was a special ship operating in a special area of the world. RRS JAMES CLARK ROSS/ZDLP is a research ship of the British Antarctic Survey operating in Antarctic waters. His signals were very strong and stable on 16Mc. We sent him a message of greetings for the new year and he filed a TR (position report) with us. We certainly hope to hear from him in the future. The rest of the story: It was in fact hoped that we would hear from ZDLP on Saturday. The evening before I was listening around on the low end of the 40m amateur band and came across VP8CMH/MM which naturally caught my ear. He was aboard RRS JAMES CLARK ROSS. I wasn't able to make contact from my home station but wrote to Mike Gloistein at the email address given on QRZ to tell him that his signals were getting into California and to advise him of the services of KSM. He quickly replied and said he would try to call us. By the latter half of my watch at KSM I had not heard from ZDLP and thought perhaps conditions or Mike's work load did not permit him to call. Then came an email from alert KSM listener Larry Godek who advised that he could hear someone calling us on 16914kc, our transmitting frequency. All marine communications are duplex so I was scanning the calling frequencies as usual. I couldn't hear anyone calling on the transmit frequency because the RF gain on the keying monitor receiver is turned way down. Thinking the caller may have been ZDLP I broadcast the correct 16Mc calling frequency on all channels. Sure enough, ZDLP came up on the frequency. The ZDLP signal was impressively strong and we had an excellent exchange. Larry reported that he was able to copy ZDLP as well. VY 73, RD ================================= Richard Dillman, W6AWO Chief Operator, Coast Station KSM Maritime Radio Historical Society http://www.radiomarine.org ================================= ------------------------------ From: wb3fau@att.net To: Old Tube Radios Cc: David Hollander , Old Tube Radios Subject: Re: Pogo said: Date: Tue, 06 Jan 2009 01:59:57 +0000 Message-Id: <010620090159.21025.4962BB1D0000829B0000522122216128369B0A02D29B9B0EBF9A0E00CC0D99@att.net> move over Seinfeld! ------------------------------ From: ail0@att.net To: Old Tube Radios Subject: Re: Another way to skin the... eerr, tell the time. Date: Tue, 06 Jan 2009 19:44:15 +0000 Message-Id: <010620091944.14815.4963B48F000AC37A000039DF22218801869B0A02D29B9B0EBFCF04070E@att.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_14815_1231271055_0" --NextPart_Webmail_9m3u9jl4l_14815_1231271055_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit > I bought an 'atomic clock'... one that keeps time from Boulder... for > with WWV, etc. It also gives D/M/Y once set. The LF version of WWV. > > Try it, you'll like it. I bought a couple night table versions from R-S (they don't have it any more) One fell on the floor and broke the switch for the light, but I still use it in the shack. My only complaint is that it only sets at 3, 6, 9, 12 and won't do that unless I put it in a certain room near a window. Once set, it is fine. I have a larger wall clock which I got from R-S and it is visible all over the shack. Month, Day, Day of Week AM/PM and room temperature. It's 67.5 degrees F here (24 degrees and sleeting outside). No more worries about Daylight Savings. It's nice when traveling because you can set it to the local time zone. Happy New Year Art K3HBA --NextPart_Webmail_9m3u9jl4l_14815_1231271055_0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --NextPart_Webmail_9m3u9jl4l_14815_1231271055_0-- ------------------------------ Message-ID: From: "Paul Kraemer" To: Old Tube Radios Subject: EICO Date: Wed, 7 Jan 2009 12:25:28 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 7bit Is there an EICO reflector? Paul K0UYA ------------------------------ Date: Fri, 09 Jan 2009 11:20:27 -0500 To: Old Tube Radios From: Larry B Subject: Collins part identification please Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-49677A870000=======" Message-Id: <20090109162545.BAEA410AF57@srvr1.theporch.com> --=======AVGMAIL-49677A870000======= Content-Type: text/plain; charset="us-ascii"; format=flowed I came across some little encapsulated circuits in my collection that have the Collins name and "circles" logo on them as well as "in" and "out" markings on them. They are also marked with numbers. Here they are: One with these numbers: 5.003023-P6 5.001926-P5 8161411-7 G3 Three with these numbers: 8161411-7-P3 4999170-P3 Any ideas? Thanks........Larry --=======AVGMAIL-49677A870000======= Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --=======AVGMAIL-49677A870000=======-- ------------------------------ Date: Fri, 09 Jan 2009 15:52:41 -0500 From: "Nick England" Subject: Big Receiver available in LA area To: Old Tube Radios Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Need a project to start off the new year right? How about an 88 tube, 700 lb receiver? See contact info below for a complete set of 12 modules for one rack (one receiver) of the Navy's early 1950's triple diversity AN/FRR-24 HF receiver system, made by National. He has a box of interconnecting cables but no rack - any 19" 42U rack will do. I have info on the FRR-24 system at http://www.virhistory.com/ham/frr24.htm Note - these are actually modules for AN/FRR-37 which is the later dual diversity version, but there is essentially no diff between FRR-24 and FRR-37. Pick-up only in Norwalk, CA - between Anaheim & downtown LA I don't know about price, but sounds like this guy is motivated to get them moved but is trying to get some money for an SK's family. I'd go for it myself if it were closer (and if I didn't already have 4 racks worth of FRR-24!) cheers, Nick www.virhistory.com/navy > ----- Original Message ----- > Sent: Saturday, January 03, 2009 6:07 PM > Subject: FRR-24 Radio > > Hello Nick, > > I am handling the radio estate of Douglas Lyon, N6WZI. I put the word out > on the ham radios and test equipment and sold some, but have too much left. > I Googled the FRR-24 and your site came up first. Attached is a spread > sheet of the inventory. If you know of anyone in the LA area that needs any > of these pieces please let me know. I have know of knowing if they operate. > The weight makes it impossible to ship. Cell 626-893-4084 or email back. > Thanks > > Dick > WB6JDH > wb6jdh@verizon.net Navy Amp Detector AM-439A/FRR-24 fair Navy Amp Converter AM-450A/FRR-24 fair Navy Amp Converter AM-451A/FRR-24 fair Navy Amp Converter AM-452A/FRR-24 fair Navy Amp Converter AM-453A/FRR-24 fair Navy 2nd IF RF amp AM-454A/FRR-24 fair Navy RF Oscellator O-131A/FRR-24 fair Navy Freq. Converter CV-126A/FRR-24 fair Navy Control Panel SB-142/FRR-24 fair Navy Power Supply PP-590/FRR-24 fair Navy Patch Panel SB-283/FRR-37 fair Navy Filter Assembly F-207/FRR-37 fair ------------------------------ End of BOATANCHORS Digest 4237 ******************************