20090418.ba v04_n264.bam.20090418 >From ???@??? Sat Apr 18 11:14:48 2009 -0500 Date: Sat, 18 Apr 2009 10:14:02 CST From: Old Tube Radios To: Old Tube Radios Subject: BOATANCHORS digest 4264 Message-Id: <20090418161404.4CC4A10B12B@srvr1.theporch.com> BOATANCHORS Digest 4264 Topics covered in this issue include: 1) Re: CONAR AM Transmitter ?? by "Sandy" 2) 5894 final amplifier question by Mike Steussy 3) RE: 5894 final amplifier question by RICHARD SOLOMON 4) Nokians: Finnish CW by stuck in 50s 5) Re: Nokians: Finnish CW by David Hollander 6) Johnson Invader 200 Finals ?? by RICHARD SOLOMON 7) Re: Nokians: Finnish CW by "vilgotch@bigpond.net.au" 8) Re: CONAR AM Transmitter ?? by stuck in 50s 9) Motorola base station mic for L-3100A by WA5CAB@cs.com 10) Re: Motorola base station mic for L-3100A by mac 11) Need light bulb! by "Ken" 12) Need 10W bulb. by "Ken" 13) Annual schematic plea by stuck in 50s 14) Annual schematic plea by stuck in 50s 15) Re: Need light bulb! by "Arden Allen" 16) Re: Annual schematic plea by stuck in 50s 17) 400 Hz Motor Question by "Jim Garland" <4cx250b@muohio.edu> 18) RE: 400 Hz Motor Question by "Bill Hawkins" 19) Re: 400 Hz Motor Question by "Bob Moody" ---------------------------------------------------------------------- Message-ID: From: "Sandy" To: Old Tube Radios Subject: Re: CONAR AM Transmitter ?? Date: Mon, 13 Apr 2009 15:21:10 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit There is a couple of guys who are trying to sell "bogus" stuff on e-bay. The items are obviously "fake" or partially so and mis advertised! I don't remember what the seller's names are now but I'm sure some of the guys on the list will. Be careful as there are "counterfeits" out there! 73, Sandy W5TVW ----- Original Message ----- From: "RICHARD SOLOMON" To: "Old Tube Radios" Sent: Monday, April 13, 2009 11:04 AM Subject: FW: CONAR AM Transmitter ?? From: w1ksz@q.com To: ebjr37@charter.net Subject: RE: CONAR AM Transmitter ?? Date: Mon, 13 Apr 2009 16:03:43 +0000 The rig I saw (was on e-Pay and the seller said it was a 5894) does not look anything like the CONAR's. I wish I kept the listing. I missed out by only a few $$. Thanks to all, 73, Dick, W1KSZ > From: ebjr37@charter.net > To: boatanchors@theporch.com > Subject: Re: CONAR AM Transmitter ?? > Date: Mon, 13 Apr 2009 10:08:32 -0500 > > The Rayheon RK-34 is nothing at all like the 5894! The RK-34 was popular > back during the "5 mter" days. It is a dual triode with a large 7 pin > base. > Sort of a "beefed up" version of the 6A6 with the plates brought out of > the > top via two caps. In fact the base connections are identical to the 6A6 > except for the plate caps. > > 73, > > Sandy W5TVW > > I have a breadboard transmitter using three RK-34's. One is a push-pull > Jones oscillator driving a pair of paralleled RK-34's in puh-pull. The > transmitter with around 375 volts of B+ will deliver about 35 watts out on > 40 and 80 meters. > > ----- Original Message ----- > From: "Nick England" > To: "Old Tube Radios" > Sent: Monday, April 13, 2009 9:02 AM > Subject: RE: CONAR AM Transmitter ?? > > > >I have photos of this Conar transmitter on my kits page at - > > http://www.virhistory.com/ham/kits.html > > > > Info I had says it uses RK34, but I believe that is equivalent to 5894. > > cheers, > > Nick K4NYW > > www.navy-radio.com > > > > -----Original Message----- > > From: owner-boatanchors@theporch.com > > [mailto:owner-boatanchors@theporch.com] > > On Behalf Of RICHARD SOLOMON > > Sent: Sunday, April 12, 2009 9:47 PM > > To: Old Tube Radios > > Subject: CONAR AM Transmitter ?? > > > > > > Was it CONAR that made an AM Transmitter with a 5894 in the final ? > > > > I saw a Xtal-Controlled QAM Rig that had a 5894 in it, but not sure > > > > of the manufacturer. > > > > > > > > Does this ring a bell with anyone ? > > > > > > > > Thanks, Dick, W1KSZ > > > > > -------------------------------------------------------------------------------- > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.287 / Virus Database: 270.11.54/2056 - Release Date: 04/12/09 > 13:14:00 > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.11.54/2056 - Release Date: 04/13/09 05:51:00 ------------------------------ Message-ID: <49E3B72C.8020805@cox.net> Date: Mon, 13 Apr 2009 18:05:32 -0400 From: Mike Steussy MIME-Version: 1.0 To: Old Tube Radios Subject: 5894 final amplifier question Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ahoy! The Sonar SRT-120 uses a 5894 in the final. W7CPA has a nice set of images of one at this site. http://www.arizona-am.net/PHOENIX/W7CPA/index.html 73, Mike Steussy AE4R --------------- W1KSZ, whose message was truncated in the digest, asked: > Was it CONAR that made an AM Transmitter with a 5894 in the final ? ------------------------------ Message-ID: Content-Type: multipart/alternative; boundary="_ec1318b1-f1b8-4365-9f86-82eb25d51268_" From: RICHARD SOLOMON To: Old Tube Radios Subject: RE: 5894 final amplifier question Date: Mon, 13 Apr 2009 23:18:06 +0000 MIME-Version: 1.0 --_ec1318b1-f1b8-4365-9f86-82eb25d51268_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That's the one ... I was close ... Sonar ... Conar !! =20 Now=2C anyone got one they want to sell ?? =20 73=2C Dick=2C W1KSZ =20 > Date: Mon=2C 13 Apr 2009 18:05:32 -0400 > From: ae4r@cox.net > To: boatanchors@theporch.com > Subject: 5894 final amplifier question >=20 > Ahoy! The Sonar SRT-120 uses a 5894 in the final. W7CPA has a nice set=20 > of images of one at this site. >=20 > http://www.arizona-am.net/PHOENIX/W7CPA/index.html >=20 > 73=2C Mike Steussy AE4R >=20 > --------------- > W1KSZ=2C whose message was truncated in the digest=2C asked: >=20 > > Was it CONAR that made an AM Transmitter with a 5894 in the final ? >=20 --_ec1318b1-f1b8-4365-9f86-82eb25d51268_ 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 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --_ec1318b1-f1b8-4365-9f86-82eb25d51268_-- ------------------------------ Date: Tue, 14 Apr 2009 11:26:11 -0400 (EDT) From: stuck in 50s Message-Id: <200904141526.n3EFQB1K025145@fracas.netboobie.org> To: Old Tube Radios Subject: Nokians: Finnish CW I've received several text messages recently on a late Nokia cell fone. Arrival announced by a couple of chords and something haunting Well durned if that haunting thing isn't dit dit dit dit dit dit Yup, morse for HI. Somebody in the cold north has a sense of humor! Marty aka AA4RM ------------------------------ Message-ID: <49E4BD59.3040200@cox.net> Date: Tue, 14 Apr 2009 09:44:09 -0700 From: David Hollander MIME-Version: 1.0 To: Old Tube Radios CC: Old Tube Radios Subject: Re: Nokians: Finnish CW Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit OH2BH Martti Laine, world famous DXer and contester worked for was pretty high up in Nokia for many years. He may still work for them. Probably had a lot to do with the CW you are hearing. Dave N7RK -- *********************************************************** 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: Content-Type: multipart/alternative; boundary="_6a60f40c-190e-4b85-9653-9fe094361193_" From: RICHARD SOLOMON To: Old Tube Radios Subject: Johnson Invader 200 Finals ?? Date: Tue, 14 Apr 2009 17:17:03 +0000 MIME-Version: 1.0 --_6a60f40c-190e-4b85-9653-9fe094361193_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Is there a version of the 6146 that is better to use in the Invader ? This poor old puppie I picked up on the "Evil Empire" has one 6146B and one 6146A. Only getting about 55 watts out on CW. seems a tad low. And mixing tube types doesn't look good. Thanks=2C Dick=2C W1KSZ --_6a60f40c-190e-4b85-9653-9fe094361193_ 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 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --_6a60f40c-190e-4b85-9653-9fe094361193_-- ------------------------------ Message-ID: <7993975.1239750630779.JavaMail.root@nschwwebs02p> Date: Wed, 15 Apr 2009 9:10:30 +1000 From: "vilgotch@bigpond.net.au" To: Old Tube Radios Subject: Re: Nokians: Finnish CW Cc: Old Tube Radios Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit My current but not modern Nokia sends "SMS" whan a text message is received. My previous one sent "connecting people" in nice CW. I miss it. 73, Morris ---- David Hollander wrote: > OH2BH Martti Laine, world famous DXer and contester worked for was > pretty high up in Nokia for many years. He may still work for them. > > Probably had a lot to do with the CW you are hearing. > > Dave N7RK > -- > *********************************************************** > 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 > ------------------------------ Date: Wed, 15 Apr 2009 07:58:47 -0400 (EDT) From: stuck in 50s Message-Id: <200904151158.n3FBwlZu000134@fracas.netboobie.org> To: Old Tube Radios Subject: Re: CONAR AM Transmitter ?? In particular, the RK-34 gess WEull, shucks. The pre-RETMA designator for the 5894 was the AX-9904 I know that's close but don't guarantee it I hear all the salt shakers in THE Melody @ New Carlisle, OH are made from these. Again, no warranty Marty ------------------------------ From: WA5CAB@cs.com Message-ID: Date: Fri, 17 Apr 2009 00:04:09 EDT Subject: Motorola base station mic for L-3100A To: Old Tube Radios MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_c11.2704fc95.371959b9_boundary" --part1_c11.2704fc95.371959b9_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Anyone have one of these mics they want to sell? A friend is restoring one of the radios and wants it. Head reportedly looks like the hand-held of the era. PTT switch might be on the base instead of the side of the tube. The set is totally outside my area of expertise. But you know non-radio folks. If you play with radios, you're presumed to know about all of them. Robert Downs - Houston wa5cab dot com (Web Store) MVPA 9480 --part1_c11.2704fc95.371959b9_boundary 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 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * --part1_c11.2704fc95.371959b9_boundary-- ------------------------------ Cc: Old Tube Radios Message-Id: <481A57E8-BB8F-4B44-B95A-F1A725FAD59A@aol.com> From: mac To: Old Tube Radios Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Subject: Re: Motorola base station mic for L-3100A Date: Thu, 16 Apr 2009 23:57:51 -0700 "theporch" strikes again...... Dennis D. W7QHO Glendale, CA On Apr 16, 2009, at 9:04 PM, WA5CAB@cs.com wrote: > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > * ---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 * > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ------------------------------ Message-ID: <72205B4D9E1C411AB5CA68BE087D9D12@Ken> From: "Ken" To: Old Tube Radios Subject: Need light bulb! Date: Fri, 17 Apr 2009 09:09:51 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C9BF3C.441A3140" This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C9BF3C.441A3140 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Fellows, I have a piece of equiment that requires a GE 63 light bulb if it is 10 = Watt rating. If it is not 10 watts, I need the same size and shape as the GE 63 bulb = but rated at 10 watts. Any help appreciated! Thanks and take care, Ken N5CM ------=_NextPart_000_0005_01C9BF3C.441A3140 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_0005_01C9BF3C.441A3140-- ------------------------------ Message-ID: <8D57A3C727D341E3925FB09AFFB8CFA2@Ken> From: "Ken" To: Old Tube Radios Subject: Need 10W bulb. Date: Fri, 17 Apr 2009 11:10:07 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01C9BF4D.1135DF20" This is a multi-part message in MIME format. ------=_NextPart_000_0022_01C9BF4D.1135DF20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Curcom & Chuck but no luck! I wonder if someone who is good with LED's could point me in the right direction. What LED will equal 10W filament type bulb if any? The light needs to be focused in one direction (If that is any help). Thanks, Ken N5CM ------=_NextPart_000_0022_01C9BF4D.1135DF20 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_0022_01C9BF4D.1135DF20-- ------------------------------ Date: Fri, 17 Apr 2009 16:55:31 -0400 (EDT) From: stuck in 50s Message-Id: <200904172055.n3HKtVJK024084@fracas.netboobie.org> To: Old Tube Radios Subject: Annual schematic plea Yo anchor-dom. Here's 2 fotos http://qsl.asti.net/May-day\%20155.jpg http://qsl.asti.net/May-day\%20156.jpg Identity of the set was a thread 19 entries long & uncovered listmember Jim Allen has one too. This one was a Revenooer (A&TT / alcohol & tobacco tax) set maybe built in Portland, OR by a USFS contractor. Probably in late 50s as divined fm pix. And a good guess is set designed by hams. This one crystalled for 75m. Guessing that, it's too new for the "Radio for the Fire Line" book re USFS 2-ways. I'd just love a schematic Tnx, Marty aka aa4rm ------------------------------ Date: Fri, 17 Apr 2009 17:12:23 -0400 (EDT) From: stuck in 50s Message-Id: <200904172112.n3HLCNq3024169@fracas.netboobie.org> To: Old Tube Radios Subject: Annual schematic plea Yo anchor-dom. Here's 2 fotos http://qsl.asti.net/May-day\%20155.jpg http://qsl.asti.net/May-day\%20156.jpg Identity of the set was a thread 19 entries long & uncovered listmember Jim Allen has one too. This one was a Revenooer (A&TT / alcohol & tobacco tax) set maybe built in Portland, OR by a USFS contractor. Probably in late 50s as divined fm pix. And a good guess is set designed by hams. This one crystalled for 75m. Guessing that, it's too new for the "Radio for the Fire Line" book re USFS 2-ways. I'd just love a schematic Tnx, Marty aka aa4rm ------------------------------ Message-ID: <001d01c9bfc1$a83a34b0$9b9d480c@KB6NAX> From: "Arden Allen" To: Old Tube Radios Subject: Re: Need light bulb! Date: Fri, 17 Apr 2009 18:04:33 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit > I have a piece of equiment that requires a GE 63 light bulb if it is 10 Watt rating. If it is not 10 watts, I need the same size and shape as the GE 63 bulb but rated at 10 watts. Any help appreciated! The GE63 at 14 volts, 0.63 amps produces only 8.82 watts. Is that close enough? How do you come up with your "10 Watt" rating? Arden Allen KB6NAX Adopt a shelter dog, save an innocent life, and make a friend forever =:-) ------------------------------ Date: Sat, 18 Apr 2009 08:21:08 -0400 (EDT) From: stuck in 50s Message-Id: <200904181221.n3ICL8oQ026821@fracas.netboobie.org> To: Old Tube Radios Subject: Re: Annual schematic plea Dang. No excuses. Y'all pse try this http://qsl.asti.net/May-day_155.jpg http://qsl.asti.net/May-day_156.jpg 10**3 pardons signed shrinking violet ------------------------------ From: "Jim Garland" <4cx250b@muohio.edu> To: Old Tube Radios Subject: 400 Hz Motor Question Date: Sat, 18 Apr 2009 06:47:20 -0600 Message-ID: <008001c9c023$d0e70840$bd00a8c0@Garland> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0081_01C9BFF1.864C9840" This is a multi-part message in MIME format. ------=_NextPart_000_0081_01C9BFF1.864C9840 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit What happens if I try to run an AC motor designed for 400 Hz on 60 Hz? I know 400 Hz transformers will overheat on 60 Hz, but am not sure about motors. I suspect they will also run hot. Would they also run slower than their rated speed? Could they be run at a reduced voltage to keep them from overheating? I'm asking because I found a nice mils spec squirrel cage blower for a forthcoming amplifier project, but it's intended for 400 Hz. I'll probably end up swapping the motor. Tnx and 73, Jim W8ZR ------=_NextPart_000_0081_01C9BFF1.864C9840 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_0081_01C9BFF1.864C9840-- ------------------------------ From: "Bill Hawkins" To: Old Tube Radios Subject: RE: 400 Hz Motor Question Date: Sat, 18 Apr 2009 09:56:42 -0500 Message-ID: <36A863F928A64A6F965B3419767F9923@cyrus> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit The neat thing about 400 Hz is the reduction in iron needed for magnetic circuits. A wound iron core will saturate at some constant proportional to magnetic stuff. The voltage that a winding will support is equal to the constant times the frequency. Higher voltages or lower frequencies will partially saturate the core, turning the wire into a resistor for part of the cycle. In short, you can't use the fan at its rated voltage on 60 Hz, so you can't get the rated power of the fan. If its a really 'cool' fan, consider generating 400 Hz for it with an inverter. Bill Hawkins -----Original Message----- From: Jim Garland Sent: Saturday, April 18, 2009 7:47 AM What happens if I try to run an AC motor designed for 400 Hz on 60 Hz? I know 400 Hz transformers will overheat on 60 Hz, but am not sure about motors. I suspect they will also run hot. Would they also run slower than their rated speed? Could they be run at a reduced voltage to keep them from overheating? I'm asking because I found a nice mils spec squirrel cage blower for a forthcoming amplifier project, but it's intended for 400 Hz. I'll probably end up swapping the motor. Tnx and 73, Jim W8ZR ------------------------------ Message-ID: <643C260B683E4655B8EF798436D62F1C@your5dfc0f230e> From: "Bob Moody" To: Old Tube Radios Subject: Re: 400 Hz Motor Question Date: Sat, 18 Apr 2009 09:13:47 -0700 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit Doesn't Fair Radio Sales sell the 400 cycle inverter modules to run the fan in the Am-6154 and AM-6155 amps? Bob K7IRK > > If its a really 'cool' fan, consider generating 400 Hz for it with an > inverter. > > Bill Hawkins > > > -----Original Message----- > From: Jim Garland > Sent: Saturday, April 18, 2009 7:47 AM > > What happens if I try to run an AC motor designed for 400 Hz on 60 Hz? I > know 400 Hz transformers will overheat on 60 Hz, but am not sure about > motors. I suspect they will also run hot. Would they also run slower > than their rated speed? Could they be run at a reduced voltage to keep > them from overheating? I'm asking because I found a nice mils spec > squirrel cage blower for a forthcoming amplifier project, but it's > intended for 400 Hz. > I'll probably end up swapping the motor. > > Tnx and 73, > > Jim W8ZR > > ------------------------------ End of BOATANCHORS Digest 4264 ******************************