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21. [AMPS] "Technical Material" Amplifier (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Wed, 23 Dec 1998 20:40:46 -0500; Hi PL-172 Characteristics Heater or Filament Voltage . 6 volts Heater or Filament Current . 7.8 amperes EIA Base . . . . . . . . . . None Prefered Substitutes . . . . None Substitutes. . . . . . . .; /archives//html/Amps/1998-12/msg00359.html (8,516 bytes)
22. [AMPS] 50:75 ohm matching (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Thu, 24 Dec 1998 22:11:47 -0500; Tis true For a particular outside size of cable, the lowest loss is at 77 ohms, maximum breakdown voltage is at 60 ohms, and the highest power handling is at 30 ohms. 50 ohms is the best compromise.; /archives//html/Amps/1998-12/msg00398.html (7,439 bytes)
23. [AMPS] restoring/replating (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Sun, 27 Dec 1998 20:14:51 -0500; I would take a guess that it's silver sulphide. Frank W2FCA -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com; /archives//html/Amps/1998-12/msg00433.html (7,890 bytes)
24. [AMPS] Need info on 6156 tube (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Mon, 28 Dec 1998 06:08:49 -0500; Heater or Filament Voltage . 5 volts Heater or Filament Current . 14.5 amperes EIA Base . . . . . . . . . . 5BK Prefered Substitutes . . . . None Substitutes. . . . . . . . . None For Characteristics; /archives//html/Amps/1998-12/msg00439.html (7,282 bytes)
25. [AMPS] Re: SV: G2DAF (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Sun, 1 Nov 1998 18:33:32 -0500; That's part of my logic in going with 8877's for my wintertime VHF amp projects. Also, my DEM transverters do nicely at 10 - 20 w out. I think I would do better to leave it at 10 watts, run it into a; /archives//html/Amps/1998-11/msg00023.html (7,874 bytes)
26. [AMPS] Parallel power transformers (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Sat, 7 Nov 1998 22:50:02 -0500; Got a question from somebody today. He has two identical power transformers, each 120v in and 1800 v at 500ma out. The question is could these be put primaries in series and secondaries in parallel t; /archives//html/Amps/1998-11/msg00109.html (7,298 bytes)
27. [AMPS] Fw: Drake L4B mods per posting 8/98 (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Sat, 31 Oct 1998 20:11:11 -0500; and it in I dunno. 1300 out for 100 in sounds like good efficiency to me :-). But, I doubt I'd spend 360 bucks and all the time for another 200 watts. I'm all for QRO but at that point I'd work on m; /archives//html/Amps/1998-10/msg00001.html (7,541 bytes)
28. [AMPS] Surplus amp question (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Mon, 19 Oct 1998 16:45:44 -0400; Hi all I've got the cavity from an AM-1565/URC amp which was part of the SRC20 radio unit. Thing originally went from 200 to 399 MHz. Anybody have any info, schematics, or manuals for this thing? It; /archives//html/Amps/1998-10/msg00286.html (6,750 bytes)
29. [AMPS] Re: Antenna System power ratings (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Tue, 20 Oct 1998 17:15:45 -0400; 400W? Aren't your limits 400 watts at the antenna? Frank W2FCA -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.; /archives//html/Amps/1998-10/msg00305.html (8,336 bytes)
30. [AMPS] Info needed 7213/7214 (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Sun, 25 Oct 1998 14:28:40 -0500; Greetings Looking for specs on the 7213/7214. Max voltages, fil voltage/current and max frequency. Thanks Frank W2FCA -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting; /archives//html/Amps/1998-10/msg00384.html (6,868 bytes)
31. [AMPS] Purpose of CW/SSB switch (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Thu, 10 Sep 1998 22:36:22 -0400; amps ? I've seen these and I think they would change the class, for example, from AB (linear) to class C (CW). You'd get better efficiency for CW with class C Frank W2FCA -- FAQ on WWW: http://www.c; /archives//html/Amps/1998-09/msg00128.html (8,027 bytes)
32. [AMPS] 1296 MHz Power Amplifiers (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Mon, 14 Sep 1998 16:35:50 -0400; Check out the site of www.6mt.com Click on the 1296 section. They have that in downloadable format I think as there is a reprint called "1296 AMP USING A PAIR OF 3C100A (HR 3-70" Frank W2FCA -- FAQ; /archives//html/Amps/1998-09/msg00191.html (7,400 bytes)
33. [AMPS] Need Millen HV connectors (score: 1): Author: LOMAX1@prodigy.net (frank ayers jr); Date: Fri, 5 Jun 1998 10:04:06 -0400; Millen still exists. I believe they're in MA, and I called them a while ago about the same thing. I never followed through because I decided to go with the MHV series connectors (kinda like longer BN; /archives//html/Amps/1998-06/msg00070.html (7,557 bytes)
34. [AMPS] parasitics (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Sat, 23 May 1998 21:58:14 -0400; Any time I've called I've gotten some engineer that never gets to talk to people and gotten far more info that I was first looking for! I called once for some info on various types of coolers for 2C; /archives//html/Amps/1998-05/msg00528.html (8,462 bytes)
35. [AMPS] Re: Tube chimneys (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Mon, 9 Mar 1998 18:50:23 -0000; Got a question about do it yourself chimneys. Having determined that the oil cap will do just fine in my power supply, I'm now setting my attention on the amplifiers that it will power. I have a Svet; /archives//html/Amps/1998-03/msg00112.html (7,978 bytes)
36. [AMPS] AWSOME AMP>>> (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Mon, 9 Mar 1998 19:00:58 -0000; The Eimac book shows that their 4CX35,000 would do it. Of course the filament alone pulls 3kw (10v at 295 amps). Bet Fair Radio has one of those filament xfrmrs. Frank W2FCA -- FAQ on WWW: http://ww; /archives//html/Amps/1998-03/msg00113.html (7,410 bytes)
37. [AMPS] Jim RE: time limit for output... (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Mon, 9 Mar 1998 21:15:19 -0000; to Funny you should mention that. A while ago QST ran a review of a six meter amp using a single 3cx800. The claimed output was 1200 watts, which would agree with the above claim. Problem is the max; /archives//html/Amps/1998-03/msg00131.html (8,148 bytes)
38. [AMPS] Chimneys (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Tue, 10 Mar 1998 18:51:44 -0000; Thanks to all who responded about the 4CX800 chimney. What I found and will try is a "freeze heat and serve" container made by Anchor Hocking. The 8 oz size is just about perfect to cut a 2.75 inch h; /archives//html/Amps/1998-03/msg00157.html (7,077 bytes)
39. [AMPS] Blowers (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Tue, 10 Mar 1998 19:05:01 -0000; Two points on the blowers - 1. One advantage of buying a new blower is being sure of the ratings. this of course doesn't apply when the flea market type is marked. 2. I've been getting blowers at Gra; /archives//html/Amps/1998-03/msg00158.html (8,424 bytes)
40. [AMPS] Step Start for Ameritron AL-80A (score: 1): Author: LOMAX1@prodigy.net (Frank & Barb Ayers); Date: Sat, 14 Mar 1998 11:06:01 -0000; ". I used an adjustable Amperite time-delay relay set to about three seconds. Such relays brand new sell for about $40 and can often be found for less at the usual surplus outlets." Hosfelt Electroni; /archives//html/Amps/1998-03/msg00272.html (8,144 bytes)

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