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1. [Amps] MLA-2500 retrofit. (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Tue, 2 Mar 2010 20:47:48 -0800; I have a buddy with TWO MLA-2500's..... and both now with flat/bad tubes. I believe one of them has a tuned input, and the 2nd one does not. Is the tube really unavailable ? If so, what are his optio; /archives//html/Amps/2010-03/msg00054.html (6,490 bytes)
2. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: MIKE DURKIN <patriot121@msn.com>; Date: Tue, 2 Mar 2010 21:25:32 -0800; This looks fairly straight forward ... http://www.nd2x.net/w4emf-MLA.html I just did/doing a GS-35B in place of a pair of 3-500z's ... Mike KC7NOA ____________________________________________________; /archives//html/Amps/2010-03/msg00055.html (7,562 bytes)
3. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 03 Mar 2010 01:05:08 -0500; If you are asking if they are still in production, they are not. They are occasionally available on e-bay where you pays your money and takes your chances. There are a pair of supposedly unused ones; /archives//html/Amps/2010-03/msg00056.html (8,993 bytes)
4. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: Ryan Foster <foster.ryan@gmail.com>; Date: Wed, 3 Mar 2010 02:55:57 -0500; The gi7b is a decently easy retrofit that nets me about 1050w-1080w out on most I forget what it is on 160, but lower-- maybe 990? More annoying fits can be done and keep higher output, I was recentl; /archives//html/Amps/2010-03/msg00057.html (11,024 bytes)
5. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Wed, 3 Mar 2010 03:09:24 -0500; The rated plate dissipation for the 8875 (transverse cooled) was 300 Watts - the cooler is not as efficient as the 8874. From the Eimac Data Sheet: The three types differ only in the method of cooli; /archives//html/Amps/2010-03/msg00058.html (13,388 bytes)
6. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: "Winfried Kriegl" <dk9ip@gmx.de>; Date: Wed, 03 Mar 2010 09:57:27 +0100; Jim, look here http://dk9ip.de/projects/mla2500/mla2500.html for my conversion using 2 x 3CPX800 and links to some other conversion designs. 73 Win DK9IP -- Original-Nachricht -- -- GRATIS für alle G; /archives//html/Amps/2010-03/msg00061.html (8,623 bytes)
7. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 3 Mar 2010 10:02:21 -0500; Ive done a few to a single 3CX800A7. Its an easy electrical swap but a PITA for sheetmetal and mounting the tube horizontally and using the original fan. It works well at 1100-1200W out with 50W driv; /archives//html/Amps/2010-03/msg00065.html (8,649 bytes)
8. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: Doug Renwick <ve5ra@sasktel.net>; Date: Sat, 13 Mar 2010 20:27:37 -0600; I have a pair of Eimac 8875's that are surplus. I purchased them from W2CQM/3 a few years ago based on his guarantee that they produced 1200w output with 2600vdc plate voltage and 100w of drive on hi; /archives//html/Amps/2010-03/msg00233.html (8,741 bytes)
9. Re: [Amps] MLA-2500 retrofit. (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sat, 13 Mar 2010 22:06:09 -0500; Id say they are pretty tired then as that voltage is well over their ratings. A MLA-2500 at 1800-1900V with good tubes will do the same with about 70-75W drive. I use one on the 2nd station. Carl KM1; /archives//html/Amps/2010-03/msg00238.html (10,080 bytes)

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