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21. [AMPS] 3-500Z (score: 1): Author: Friedhelm.Luedtke@t-online.de (Friedhelm Lüdtke); Date: Mon, 20 Apr 1998 10:24:59 +0100; Hello Can somebody send or say me the data of the tube 2x3-500Zand 4CX1000A where I can find them in the network? Thank you very much. Tschuess Friedhelm _____________________________________________; /archives//html/Amps/1998-04/msg00168.html (7,334 bytes)
22. [AMPS] 3-500Z (score: 1): Author: Friedhelm.Luedtke@t-online.de (Friedhelm Lüdtke); Date: Sun, 26 Apr 1998 09:24:59 +0100; Hello Can somebody send or say me the data of the tube 2x3-500Zand 4CX1000A where I can find them in the network? Thank you very much. Tschuess Friedhelm _____________________________________________; /archives//html/Amps/1998-04/msg00293.html (7,096 bytes)
23. [AMPS] 3-500Z (score: 1): Author: grimm@lynchburg.net (Kenneth D. Grimm); Date: Sun, 26 Apr 1998 06:22:11 -0400; You can get info on the 4CX-1000A and many other tubes at http://www.eimac.com/catalog/159.htm I'm not sure where you can find info on the 3-500Z on the web. 73, Ken K4XL -- Ken K4XL grimm@lynchburg.; /archives//html/Amps/1998-04/msg00295.html (8,074 bytes)
24. [AMPS] 3-500Z (score: 1): Author: markhasin.vitaly@syncrude.com (Markhasin, Vitaly (SLI)); Date: Wed, 12 Nov 1997 07:24:00 -0700; Hi All, I am looking for a pair of 3-500Z (or G) that are NOT made in China of by Svetlana. Please advise the source (address, phone No., E-Mail etc.) and price (if you know). My E-Mail address markh; /archives//html/Amps/1997-11/msg00183.html (6,785 bytes)
25. [AMPS] 3-500Z (score: 1): Author: bscott@thor.pla-net.net (Bob Scott); Date: Wed, 26 Feb 1997 20:53:04 -0600; Okay, I have been following this, so what is the bottom line? I need a new 3-500Z pretty soon, and would like to buy the best on the market now. I am leaning toward the Amperex from what I have read.; /archives//html/Amps/1997-02/msg00075.html (7,000 bytes)
26. Re: [Amps] 3-500z (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Tue, 27 Sep 2005 18:48:05 +0000; Try rf parts. they have amperex 3-500z. don't know if the anode on that is the design you are looking for or not but i'm thinking it isn't graphite since it's a z. you will have to call them and ask.; /archives//html/Amps/2005-09/msg00336.html (6,826 bytes)
27. [Amps] 3-500z (score: 1): Author: sb200 <sb200@optonline.net>; Date: Tue, 25 Oct 2005 19:04:39 -0400; I'm putting a used Eimac 3-500z in my Ameritron AL-80B that has been stored away for years. I would like to bring it up slow but have no way of doing so. What I need to know how long should I let my; /archives//html/Amps/2005-10/msg00581.html (7,242 bytes)
28. Re: [Amps] 3-500z (score: 1): Author: Jason Buchanan <jsb@digistar.com>; Date: Tue, 25 Oct 2005 21:32:24 -0400; If it's gonna go, it's gonna go with or without a variac. If you have any grid current when you turn the amp on, immediately shut'r down and yank the tube. If you have some kind of step start for the; /archives//html/Amps/2005-10/msg00583.html (7,658 bytes)
29. Re: [Amps] 3-500z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 25 Oct 2005 23:55:38 -0400; Hello Chris: You could wire the transformer for 240 volts, and plug the amp into 120 VAC, and let it heat the filaments for a while. The low voltage should be fine for the triode and its type of fila; /archives//html/Amps/2005-10/msg00584.html (8,783 bytes)
30. Re: [Amps] 3-500z (score: 1): Author: "Jason Buchanan" <jsb@digistar.com>; Date: Wed, 26 Oct 2005 05:21:18 -0400; Ye cats - 1KW from a single 3-500Z? _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-10/msg00585.html (7,862 bytes)
31. Re: [Amps] 3-500z (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 26 Oct 2005 02:24:19 -0700; Good advice. I have never seen a 3-500Z getter itself. If the grid current is reverse, the tube is refuse. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _____________________________________; /archives//html/Amps/2005-10/msg00586.html (9,003 bytes)
32. Re: [Amps] 3-500z (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 26 Oct 2005 02:32:50 -0700; At 4000vdc, a 3-500Z will run 1600w input, however, I would tune up such a beast with a tuning pulser. I have heard about guys who ran 'em at 5000v, but only for SSB. Richard L. Measures, AG6K, 805.3; /archives//html/Amps/2005-10/msg00587.html (8,105 bytes)
33. Re: [Amps] 3-500z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 26 Oct 2005 09:33:40 -0400; Hello Jason: Model # Description Price AL-80B 1 KW Output Linear Amplifier w/ 3-500ZG Tube on 100/110/120V for US My old SB 220, which I have to admit I have heavily modified, and uses Chinese Graphi; /archives//html/Amps/2005-10/msg00593.html (9,670 bytes)
34. Re: [Amps] 3-500z (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Wed, 26 Oct 2005 08:01:41 -0700 (PDT); Absolutely. My Henry 3K-A is spec'ed at 2000W PEP Output right in the manual. It has ~4000V unloaded (3750 or so loaded) on the plates. With the fresh RF Parts ZGs, I got every bit of that with 100W; /archives//html/Amps/2005-10/msg00597.html (8,563 bytes)
35. Re: [Amps] 3-500z (score: 1): Author: jsb@digistar.com; Date: Wed, 26 Oct 2005 16:12:35 -0400 (EDT); umph - well if the typical off-the-shelf AL-80B sits idle at 2900v to the plate (I do not know if this is its normal operating voltage), 1600w input would seem to be a lot of plate current for 1 tube; /archives//html/Amps/2005-10/msg00604.html (9,192 bytes)
36. Re: [Amps] 3-500z (score: 1): Author: jsb@digistar.com; Date: Wed, 26 Oct 2005 16:19:05 -0400 (EDT); Dang - must be long grain graphite in those tubes. I get about 1100W PEP steady carrier with my L4, albeit with 3-400Z tubes that are nearly 40 years old, envelope glass browned with use. 73 Jason N1; /archives//html/Amps/2005-10/msg00605.html (8,817 bytes)
37. Re: [Amps] 3-500z (score: 1): Author: jsb@digistar.com; Date: Wed, 26 Oct 2005 16:21:18 -0400 (EDT); curious... what's the grid current at that amount of output power? Those tubes must have some kind of grids! -- 73 Jason N1SU http://n1su.us/ _______________________________________________ Amps mail; /archives//html/Amps/2005-10/msg00606.html (8,259 bytes)
38. Re: [Amps] 3-500z (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 26 Oct 2005 13:21:24 -0700; The AL-80 instruction manual says 500mA + is okay. Some people tell the truth and some don't. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Am; /archives//html/Amps/2005-10/msg00607.html (9,413 bytes)
39. Re: [Amps] 3-500z (score: 1): Author: jsb@digistar.com; Date: Wed, 26 Oct 2005 16:26:17 -0400 (EDT); The photos i've seen of AL-80Bs have Amperex tubes - I thought Amperex built their tubes using graphite plates that get "sick" with that kind of use. Something about graphite poisoning or deformation; /archives//html/Amps/2005-10/msg00608.html (9,212 bytes)
40. Re: [Amps] 3-500z (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 26 Oct 2005 13:38:37 -0700; Graphite anode or metal anode, the limiting factor is linear-region cathode/filament emission. 400mA of anode current is the rating from all manufacturers. cheers, Jason Richard L. Measures, AG6K, 80; /archives//html/Amps/2005-10/msg00609.html (9,286 bytes)

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