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21. Re: [Amps] Re: AMPS Link coupling (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 09 Jan 2005 19:55:02 +0000
My Balanced-Balanced Tuner (thanks Rich!) is in a wood box w/ cool (free surplus) plexiglass front and back panels. Have not burned myself once! Of course, there are thos big binding posts on the fro
/archives//html/Amps/2005-01/msg00155.html (8,485 bytes)

22. Re: [Amps] Testing a tuner (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 09 Jan 2005 21:34:27 +0000
My balanced tuner is configured with the motorized roller inductors (26uH ea) in series mechanically with about a 2" separation. I have the capacitor split between 2 500pF Henry variables, one of whi
/archives//html/Amps/2005-01/msg00159.html (8,492 bytes)

23. [Amps] looking for ham in Canada (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Fri, 14 Jan 2005 06:44:21 +0000
This is Tomm, KD7QAE and I need a ham in Canada to hold a heavy lot of plate transformers for me so I can drive up from Olympia to retrieve them. Ideally someone in Vancouver or Surry. The transforme
/archives//html/Amps/2005-01/msg00254.html (6,355 bytes)

24. [Amps] Want to build first amp (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Thu, 20 Jan 2005 03:58:09 +0000
Learned listmates, I want to embark on building my first HF tube amplifier. I would like to know what to start with, GG triode or Grid Driven Tetrode. I am looking for legal limit plus and will provi
/archives//html/Amps/2005-01/msg00385.html (7,331 bytes)

25. [Amps] Baluns / UNUNs in QRO (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Fri, 21 Jan 2005 19:09:01 +0000
Rather than put an antenna tuner in series with my amp, why not add a wide band RF impedance transformer to the output of the amp and go directly to the feedline? Seems that adding the plate tuner in
/archives//html/Amps/2005-01/msg00426.html (8,596 bytes)

26. Re: [Amps] Baluns / UNUNs in QRO (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Fri, 21 Jan 2005 20:18:16 +0000
Well, it varies all over the map as far as I can see. Good question, I will have to noodle that one out. doc wrote: Is the impedance of of your antenna flat from 160-10M or does it vary from below 50
/archives//html/Amps/2005-01/msg00430.html (9,644 bytes)

27. Re: [Amps] What is it called? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sat, 22 Jan 2005 19:54:27 +0000
Hal, If it is not very flexible it is a reinforced epoxy / fiberglass composite material with random fiber orientation. Generally known as GP03 (a NEMA designation). Garolite(r) is a trademark above
/archives//html/Amps/2005-01/msg00463.html (9,335 bytes)

28. Re: [Amps] 3cpx5000 aka yc-156 (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 23 Jan 2005 02:56:30 +0000
Does that come out of the anode? Chris wrote: Looking for a good pull YC-156 at a reasonable price. The one I was have took a crap. Please email at rfcrazy@cox.net Chris _____________________________
/archives//html/Amps/2005-01/msg00471.html (7,418 bytes)

29. Re: [Amps] Amp Parts Info Needed (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 23 Jan 2005 20:04:43 +0000
That would be: PAUL HEWITT WD7S PRODUCTIONS QRO HOMEBREW COMPONENTS http://home.earthlink.net/~wd7s Though I don't see a tuned input board ready for sale on the site yet. Dave Meitzen wrote: There is
/archives//html/Amps/2005-01/msg00495.html (8,417 bytes)

30. [Amps] GS35b.TUB file? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 23 Jan 2005 21:09:30 +0000
Before I go and make one, does anyone have a GS35b.TUB data file for teh TAP2 program? Tomm, KD7QAE _______________________________________________ Amps mailing list Amps@contesting.com http://lists.
/archives//html/Amps/2005-01/msg00496.html (6,082 bytes)

31. Re: [Amps] GS35b.TUB file? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 23 Jan 2005 22:07:47 +0000
So far have not found one. Am somewhat confused by Gain parameter. Have no idea what that I but if it is power gain, then I suppose 100W in giving 1500W out yields a power gain of 15. Next to do the
/archives//html/Amps/2005-01/msg00498.html (8,981 bytes)

32. [Amps] what is the mu or "amplification factor" of a gs35b??? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Mon, 24 Jan 2005 03:27:56 +0000
In trying to use TAP2 program, the question of the amplification factor comes up as it is requested in the data entry. I cannot find it speced anywhere for the gs35b. Anybody know what it is? _______
/archives//html/Amps/2005-01/msg00507.html (7,009 bytes)

33. Re: [Amps] ampliphase and hybrid am mod circuits (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Wed, 26 Jan 2005 04:16:59 +0000
There are a bunch of AMers developing ampliphase transmitters with new solid state phase regulators used in the power supply industry. We have a small Yahoo group called PhaseX if you care to visit.
/archives//html/Amps/2005-01/msg00527.html (8,649 bytes)

34. [Amps] Plate choke magic? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Fri, 28 Jan 2005 23:42:10 +0000
Why are plate chokes seemingly black magic? Don't you just want a good decoupling of the PS from the Plate; i.e. lots of impedance from DC to Light and no resonances? How I get that should not be an
/archives//html/Amps/2005-01/msg00547.html (6,700 bytes)

35. Re: [Amps] Amplifuzz [TSPA] (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Fri, 28 Jan 2005 23:46:33 +0000
It is actually the NPWM group, not teh Phasex group. I stand corrected. John T. M. Lyles wrote: I agree with Philip, I could not find it either on Yahoo groups. Ampliphase, the RCA tradename for outp
/archives//html/Amps/2005-01/msg00548.html (10,758 bytes)

36. Re: [Amps] Plate choke magic? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sat, 29 Jan 2005 08:22:15 +0000
Thanks Will, that makes perfect and practical sense. Plate choke valuse for 1.8 through 30MHz amplifiers need to be high enough to present a large reactance at 1.8MHz with large defined as >> greater
/archives//html/Amps/2005-01/msg00556.html (11,081 bytes)

37. Re: [Amps] Plate choke magic? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sat, 29 Jan 2005 08:49:52 +0000
More on the plate choke question. I just took a t200-3 core with pretty high RF losses (good) and an Al of 42.5 nH/T^2 and wound 154 turns on it to get about 1mH. Because it is a multi layer construc
/archives//html/Amps/2005-01/msg00560.html (11,962 bytes)

38. Re: [Amps] Plate choke magic? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sat, 29 Jan 2005 08:56:28 +0000
This guy is my god now, mainly because he agrees with me on Plate Chokes: http://www.qsl.net/kk5dr/ampbuilders.htm check out his treatise on plate chokes. Tomm Aldridge wrote: More on the plate choke
/archives//html/Amps/2005-01/msg00561.html (12,403 bytes)

39. Re: [Amps] Plate choke magic? (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 30 Jan 2005 02:14:08 +0000
Marv, Thanks for the references, I will read them. To be clear, I was not proposing ferrite toroids but powdered iron toroids as they can support DC due to their distributed gaps. Tomm wc6w@juno.com
/archives//html/Amps/2005-01/msg00595.html (10,462 bytes)

40. [Amps] Another GS35B site (score: 1)
Author: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Wed, 02 Feb 2005 21:18:19 +0000
I just ran across this site. Looks interesting as it has a set of pages on a GS35B w/ full control as well as PCB artwork for the same. http://f6kbf.free.fr/ _________________________________________
/archives//html/Amps/2005-02/msg00024.html (6,163 bytes)

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