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Total 6 documents matching your query.

1. Re: [Amps] WANTED: 50 pF Vacuum Variable (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Tue, 23 Jun 2009 14:41:53 -0400
The Voltronics or the Polyflons on this page might fit the bill, depending on what voltage you need: http://www.mgs4u.com/RF-Microwave/vacuum-variable-capacitors-200.htm Vacuum caps are always expens
/archives//html/Amps/2009-06/msg00101.html (7,246 bytes)

2. Re: [Amps] Dummy Load "Oil" (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Wed, 29 Jul 2009 17:24:20 -0400
Sounds like a good opportunity for a "coffee and donuts" or "six pack of beer" barter system, depending on whether you head out in the morning or near the end of the day ;-) _________________________
/archives//html/Amps/2009-07/msg00366.html (8,592 bytes)

3. Re: [Amps] Cleaning air-wound coils (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Wed, 5 May 2010 12:31:27 -0400
W0QE found that there wasn't a substantial difference between shiny copper and terribly corroded copper: http://www.bnk.com/w0qe/inductor_Q_tests.html Metallic platings should be analyzed based on t
/archives//html/Amps/2010-05/msg00060.html (9,759 bytes)

4. Re: [Amps] wires through center of coax (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Mon, 20 Dec 2010 19:11:46 -0500
If you put a conductor grounded on each end inside the hollow center conductor, and the hollow center conductor wall is many skin depths thick (which it always will be for hollow-core coax, so it do
/archives//html/Amps/2010-12/msg00290.html (8,885 bytes)

5. Re: [Amps] Adhesive forTeflon sheet.. (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Mon, 21 Mar 2011 12:35:12 -0400
Bob, The required process is pretty specialized. As I understand it, first you have to etch the surface. There are special sodium-metal-containing etchants for this: http://www.actontech.com/FluoroEt
/archives//html/Amps/2011-03/msg00149.html (7,453 bytes)

6. Re: [Amps] Where is power measured ? (score: 1)
Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
Date: Sun, 10 Apr 2011 18:05:03 -0400
I had a mix on 1830kHz that would FADE in and out sometimes. One night that it was particularly clear I figured out was that it was CHU on 3330 mixing with a loud local on 1500kHz. That explained the
/archives//html/Amps/2011-04/msg00322.html (9,300 bytes)

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