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Total 36 documents matching your query.

21. Re: [Amps] 3CX800 filament voltage (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Mon, 9 Feb 2009 16:08:48 +0000
You could you connect a small filament xfmr (with a appropriate rating) in series with the primary of the "main" filament xfmr to buck or boost its primary voltage. 73, Charlie, N0TT (http://music.ao
/archives//html/Amps/2009-02/msg00236.html (9,992 bytes)

22. Re: [Amps] SB-220 troubles (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Fri, 13 Feb 2009 17:22:56 +0000
Heh...heh...just wait until you're an OF! Just a brief lapse of awareness while you're messing around in there and you're "grounded". None of us want to read about you in the SK column! Charlie, N0T
/archives//html/Amps/2009-02/msg00427.html (8,507 bytes)

23. Re: [Amps] pc board material (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Mon, 16 Feb 2009 17:14:48 +0000
Far Circuits might have it...saw some at Dayton in their tent. I wish I woulda bought it!! 73, Charlie, N0TT _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2009-02/msg00499.html (7,928 bytes)

24. Re: [Amps] equipment faceplates-stencil etc (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Thu, 19 Feb 2009 17:33:45 +0000
FWIW, I have laser-printed lettering on the panel side of transparencies, then glued them on a painted panel with clear, photo-mount spray. The same technique *might* work with 0.010 lexan sheeting (
/archives//html/Amps/2009-02/msg00567.html (8,857 bytes)

25. Re: [Amps] turns = henries question (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Sat, 21 Feb 2009 23:57:35 +0000
Gary, To get 60uh on a .676" dia form you'll need a close-wound coil, 45 tpi, about 3" long. That per my ARRL LCF/Coil-winding Calculator. 73, Charlie, N0TT __________________________________________
/archives//html/Amps/2009-02/msg00633.html (9,061 bytes)

26. Re: [Amps] Electrical Grade Shellac (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Thu, 5 Mar 2009 03:02:27 +0000
Bravo Dave...way to go on that! I would imagine so...don't know for sure, but either shellac or varnish would be acceptable. The idea is to keep the laminations separated to avoid eddy current losse
/archives//html/Amps/2009-03/msg00128.html (9,374 bytes)

27. Re: [Amps] HV switch-mode power supply (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Thu, 21 May 2009 05:13:47 +0100
Larry, the best that I could figure is Magnetics core number ZJ-44920-TC available from this company: www.mtldistribution.com Send them an email to get a quote. They were in the $8.40 price range at
/archives//html/Amps/2009-05/msg00144.html (7,793 bytes)

28. Re: [Amps] RF Reed Relays for QSK (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Fri, 12 Jun 2009 03:36:29 +0100
FWIW Gents, I received my relays I ordered from Andy and I'm very happy with them. Good delivery from DL to Missouri too. 73, Charlie, N0TT _______________________________________________ Amps mailin
/archives//html/Amps/2009-06/msg00056.html (7,814 bytes)

29. Re: [Amps] 73 Magazine (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Fri, 25 Sep 2009 23:09:32 +0000
Yeah, I know what you mean Carl. The ARRL's "QST View" is IMHO is clumsy to use. The printed output from their CD's has been satisfactory to me however. FWIW, in the Dec 1968 QST, page 60, there was
/archives//html/Amps/2009-09/msg00323.html (13,982 bytes)

30. Re: [Amps] Bird 43 Meter Repair Query (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Sun, 4 Oct 2009 16:55:16 +0000
I've used clear silicone - sparingly. It remains flexible to allow the meter case and glass to expand differently with temperature changes. There's also a "flowable" silicone for windshield repair th
/archives//html/Amps/2009-10/msg00061.html (7,746 bytes)

31. Re: [Amps] High Voltage wire (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Wed, 2 Dec 2009 04:37:34 +0000
I've always used the solid polyethylene center conductor from coax. Never had a breakdown/arc-over. 73, Charlie, N0TT _______________________________________________ Amps mailing list Amps@contesting
/archives//html/Amps/2009-12/msg00027.html (8,215 bytes)

32. Re: [Amps] KK5DR's ferrite loaded plate chokes. (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Sun, 17 Jan 2010 04:22:39 +0000
Yes, wrong stuff to use. As an experiment, I made a much smaller choke using #43, then measured the reactance with a small current flowing through the windings. The reactance dropped dramatically! Th
/archives//html/Amps/2010-01/msg00226.html (7,814 bytes)

33. Re: [Amps] Source for large purchase of toroids? (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Sat, 23 Jan 2010 17:00:54 +0000
I use Lodestone Pacific in CA. http://www.lodestonepacific.com/ As a suggestion...know the *manufacturer's* part numbers of the cores you want before you call. They don't use simplfied part numbers
/archives//html/Amps/2010-01/msg00287.html (6,864 bytes)

34. Re: [Amps] winding xformer (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Mon, 8 Feb 2010 02:15:12 +0000
I wound one once....used the formulas from the ARRL handbook and from an old QST article. Low tech, but it worked just fine. The real "trick" is to get the primary right so it doesn't draw too much c
/archives//html/Amps/2010-02/msg00216.html (7,863 bytes)

35. Re: [Amps] Hotswitching issues 30s-1 (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Sat, 20 Feb 2010 16:16:00 +0000
FWIW...my aging Alpha 86 was designed to be keyed first, setting up the switching, THEN it keys the radio. No "first dit" is lost. Also, see QST 1987, page 51 RE a device you can build. It works. 73
/archives//html/Amps/2010-02/msg00588.html (7,082 bytes)

36. [Amps] Meter wanted! (score: 1)
Author: Missouri Guy <n0tt1@juno.com>
Date: Wed, 27 Feb 2013 17:31:14 +0000
Gents, I have a friend in Singapore that needs a plate meter for an Amp Supply LK-500ZA amplifier. It doesn't have to be the *exact* meter, but something close that is: o 1ma movement o meter face is
/archives//html/Amps/2013-02/msg00247.html (7,100 bytes)

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