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1. Re: [Amps] RCA 5762 (score: 1): Author: wa4tuk-rf@comcast.net; Date: Thu, 05 May 2005 17:57:12 +0000; I've got two of these in a somewhat broken RCA TV transmitter of early 50's vintage. Try... http://www.mif.pg.gda.pl/homepages/frank/sheets/049/5/5762.pdf Pat wa4tuk -- Original message -- __________; /archives//html/Amps/2005-05/msg00088.html (7,713 bytes)
2. Re: [Amps] New Elecraft Amps (GS35B sockets?) (score: 1): Author: "Patrick A. Thompson" <wa4tuk-rf@comcast.net>; Date: Wed, 26 Apr 2006 18:43:53 -0400; A number of hams market "homemade" sockets for the GS35B. It's easy to see how the anode and filament stem receive cooling with these sockets. Could you describe or point to a web page that shows a d; /archives//html/Amps/2006-04/msg00390.html (16,505 bytes)
3. Re: [Amps] RCA 8807 Tetrode (score: 1): Author: "Patrick A. Thompson" <wa4tuk-rf@comcast.net>; Date: Tue, 16 May 2006 07:12:33 -0400; The specs are available in pdf format from Richardson and probably from both Burle and Eimac. RCA changed to Burle many years ago and before Eimac started second sourcing these tubes. http://catalog.; /archives//html/Amps/2006-05/msg00109.html (7,704 bytes)
4. [Amps] One GS-35B or two? (score: 1): Author: "Patrick A. Thompson" <wa4tuk-rf@comcast.net>; Date: Tue, 16 May 2006 22:14:56 -0400; At no more than 1500 watts PEP output is there any great justification to run two parallel GS-35B's rather than one? What I was thinking was that two tubes with a 100 watt exciter would be mostly dam; /archives//html/Amps/2006-05/msg00170.html (6,570 bytes)
5. Re: [Amps] One GS-35B or two? (score: 1): Author: "Patrick A. Thompson" <wa4tuk-rf@comcast.net>; Date: Wed, 17 May 2006 20:06:25 -0400; It looks like one GS-35B will meet my requirements. Thank you all for the responses and observations, I did read them all. Pat wa4tuk _______________________________________________ Amps mailing list; /archives//html/Amps/2006-05/msg00212.html (10,074 bytes)
6. Re: [Amps] who needs it? Henry 8K (score: 1): Author: wa4tuk-rf@comcast.net; Date: Fri, 19 May 2006 13:52:11 +0000; I was wondering the same thing. An argument could be made that in the last 20 years or so the ambient noise level has increased by 6 db or more (or pick your number). Everything under the sun seems t; /archives//html/Amps/2006-05/msg00239.html (8,843 bytes)
7. Re: [Amps] schamatis 160 meter amp using 3cx3000a7 (score: 1): Author: "Patrick A. Thompson Sr." <wa4tuk-rf@comcast.net>; Date: Fri, 12 Jan 2007 21:05:30 -0500; Sorry, but this stuff is just so much slang. I've also been a ham since '64 and I've been keeping broadcast transmitters on-air since '74 and I've never heard or seen the phrase 3 by 3 or 4 by 5 used; /archives//html/Amps/2007-01/msg00106.html (10,185 bytes)
8. Re: [Amps] Bad tubes from ebay, update (score: 1): Author: "Patrick A. Thompson Sr." <wa4tuk-rf@comcast.net>; Date: Sat, 27 Jan 2007 20:13:27 -0500; I won't disagree with your conclusions about the pitfalls of buying cold war surplus tubes; however, I thought Anthony Welsh was a British ham/electronics dealer? For what it's worth, I've bought rel; /archives//html/Amps/2007-01/msg00277.html (9,224 bytes)
9. Re: [Amps] power supply transformer (score: 1): Author: "Patrick A. Thompson Sr." <wa4tuk-rf@comcast.net>; Date: Wed, 31 Jan 2007 20:17:41 -0500; This is related but not quite on topic. What are the transformer design differences between, for instance, a transformer designed to convert 480vac to 120vac and is labeled a control transformer, to; /archives//html/Amps/2007-01/msg00350.html (9,110 bytes)
10. Re: [Amps] Testing 8874s (score: 1): Author: wa4tuk-rf@comcast.net; Date: Fri, 02 Nov 2007 19:27:41 +0000; I would also be interested in guidelines for tube leakage using a hi-pot tester. My homemade unit will go to 10kv DC and I've used it to test some long stored tubes for leakage but interpretation of; /archives//html/Amps/2007-11/msg00024.html (10,427 bytes)
11. Re: [Amps] Blown Dentrons (score: 1): Author: wa4tuk <wa4tuk-rf@comcast.net>; Date: Tue, 11 Dec 2007 19:12:00 -0500; FYI...Peter Dahl is closing at the end of this year. A loss to both amateur operators and broadcast engineers. I wish him well. Pat wa4tuk _______________________________________________ Amps mailing; /archives//html/Amps/2007-12/msg00134.html (8,207 bytes)
12. Re: [Amps] MLA-2500 (score: 1): Author: wa4tuk <wa4tuk-rf@comcast.net>; Date: Sun, 16 Dec 2007 00:03:40 -0500; Well, you could have attempted to measure voltage with the probes in the ma position. (No condemning comments please!) I believe if it were mine to repair and I didn't know it's history, I'd give it; /archives//html/Amps/2007-12/msg00167.html (7,438 bytes)
13. Re: [Amps] Dentron MLA-2500 & BAMA (score: 1): Author: wa4tuk <wa4tuk-rf@comcast.net>; Date: Sun, 27 Jan 2008 12:26:01 -0500; There's also an excellent freeware photo viewer/editor that includes support for djvu files. Try IrfanView available at www.irfanview.com. Be sure to get the addons or plugins that is a separate down; /archives//html/Amps/2008-01/msg00219.html (9,437 bytes)
14. Re: [Amps] More on "baby ur radio" (score: 1): Author: Pat <wa4tuk-rf@comcast.net>; Date: Fri, 18 Dec 2015 18:52:40 -0500; We are mostly in agreement. I don't have any footnotes or sources to cite; however, my perception is that receiving tubes run within ratings may easily exceed 10,000 hours or more useful service with; /archives//html/Amps/2015-12/msg00034.html (10,640 bytes)
15. Re: [Amps] [rfamplifiers] Identify the tube (score: 1): Author: Pat <wa4tuk-rf@comcast.net>; Date: Mon, 25 Jul 2016 20:00:06 -0400; Look at a type 7486 planar triode to see if the tube you have is a match. Pat, wa4tuk I just adquire this tube , could someone can tell me his specs?it seems a microwave triode. Thanks in advance. Hs; /archives//html/Amps/2016-07/msg00007.html (9,735 bytes)

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