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1. [Amps] 3-500Z tubes ... (score: 1): Author: "Behiels JeanPierre" <on4aef@telenet.be>; Date: Sun, 23 Dec 2012 07:39:38 +0100; Hi members; Does someone have any experience about use of this type of tubes from RF parts ? Especially about custumer name AMPEREX-EIMAC and possible ohters. I don't now whitch costumer name this ha; /archives//html/Amps/2012-12/msg00146.html (6,444 bytes)
2. Re: [Amps] 3-500Z tubes ... (score: 1): Author: Bill Turner <dezrat1242@yahoo.com>; Date: Sat, 22 Dec 2012 23:15:48 -0800; REPLY: Equally important for that tube is whether the filament pins are soldered or welded. I was told that Amperex brand are welded. You can save yourself some future trouble my insisting on welded.; /archives//html/Amps/2012-12/msg00148.html (7,802 bytes)
3. Re: [Amps] 3-500Z tubes ... (score: 1): Author: "Mike" <noddy1211@sbcglobal.net>; Date: Sat, 22 Dec 2012 23:41:27 -0800; They work perfectly, I purchased four from the them (two matched pairs) for HF SB-221 and for SB-220 converted to Six meters. Six meter amp almost hits 1400 watts and HF amp hit 1200 watts. Mike K6BR; /archives//html/Amps/2012-12/msg00149.html (8,355 bytes)
4. Re: [Amps] 3-500Z tubes ... (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sun, 23 Dec 2012 06:57:28 -0600; I have run a pair of the RFP 3-500ZG in a TenTec Centurion rf amplifier for about 11 years now with no issues. The Ep is 3100 v. no load. For the past few years I have used them exclusively in AM ser; /archives//html/Amps/2012-12/msg00152.html (8,436 bytes)
5. Re: [Amps] 3-500Z tubes ... (score: 1): Author: Mike Tubby <mike@tubby.org>; Date: Sun, 23 Dec 2012 20:48:17 +0000; I have a pair of these RFP 3-500Z matched tubes in my TL922 and the work great. They are Chinese but the quality of Chinese tubes these days is pretty good. I also have a single one in my 6m amp (the; /archives//html/Amps/2012-12/msg00166.html (7,729 bytes)
6. Re: [Amps] 3-500Z tubes ... (score: 1): Author: Bill Turner <dezrat1242@yahoo.com>; Date: Thu, 27 Dec 2012 11:31:31 -0800; REPLY: The advantage of welded pins is they will not unsolder themselves if they get overheated, an all too common occurrence. 73, Bill W6WRT _______________________________________________ Amps mail; /archives//html/Amps/2012-12/msg00188.html (7,804 bytes)

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