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1. [Amps] GI-46B in TL-922 (score: 1): Author: Alex Malyava <alex.k2bb@gmail.com>; Date: Wed, 26 Jan 2011 11:38:29 -0500; Hello everybody, I have a TL-922 amplifier and one of 3-500 tubes died - it is widely open now. Another one is still good and amp produces 400-500W out. Friend of mine gave me a link to youtube video; /archives//html/Amps/2011-01/msg00312.html (7,311 bytes)
2. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Dave M <slash_dot@msn.com>; Date: Wed, 26 Jan 2011 12:17:53 -0500; The conversion of comercial amps to the russian triode is fairly well documented on the net ,there a few extras that need to be addressed like a new bias board and the additition of a 12.6v @5A filam; /archives//html/Amps/2011-01/msg00316.html (8,792 bytes)
3. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Alex Malyava <alex.k2bb@gmail.com>; Date: Wed, 26 Jan 2011 13:04:56 -0500; looking at the video and pictures the only things I see done are: - grid capacitors/chokes removed - voltage stabilizer (?) added Here are closeups from Italian website: http://www.italyamplifier.com; /archives//html/Amps/2011-01/msg00319.html (10,759 bytes)
4. Re: [Amps] GI-46B in TL-922 (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Wed, 26 Jan 2011 13:16:32 -0500; He may not have changed the heatsink. From documentation on the tube: What you describe a "the superior GI46 heatsink" is shown as "variant I." sounds like "variant II" is the more common. 73, ... J; /archives//html/Amps/2011-01/msg00320.html (10,167 bytes)
5. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Dave M <slash_dot@msn.com>; Date: Wed, 26 Jan 2011 16:06:07 -0500; Looking at the specs on the tubes , I think if I were looking at doing the conversion I would go with a single GS31b or a GS35b ( the KISS principle) unless I already had the others, the limiter , as; /archives//html/Amps/2011-01/msg00325.html (12,545 bytes)
6. Re: [Amps] GI-46B in TL-922 (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 26 Jan 2011 16:18:39 -0500; I wonder if a GU-81M would fit (-; If it was my amp and I was low on toy money Id opt for 4-400/4-500's as they seem available at low cost still. Same socket and filament requirements; just rewire th; /archives//html/Amps/2011-01/msg00326.html (14,067 bytes)
7. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Dave M <slash_dot@msn.com>; Date: Wed, 26 Jan 2011 16:21:08 -0500; Very true Carl , I was talking to a fellow on 80m last week that bought 6 4-400s for $30 a peice , ....mind you if it were me looking ......... .......................................................; /archives//html/Amps/2011-01/msg00327.html (15,437 bytes)
8. Re: [Amps] GI-46B in TL-922 (score: 1): Author: "Roger (Sub1)" <sub1@rogerhalstead.com>; Date: Wed, 26 Jan 2011 17:26:49 -0500; Looks like they won't fit the sockets for the regular GI7B either. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/ma; /archives//html/Amps/2011-01/msg00333.html (11,954 bytes)
9. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Thu, 27 Jan 2011 08:48:14 +0800; that's right. The heatsinks are interchangeable but the 46 tube is substantially bigger than the 7. The GI46b is more often sold without the cooler as they seem to be more plentiful like that. They a; /archives//html/Amps/2011-01/msg00340.html (14,153 bytes)
10. Re: [Amps] GI-46B in TL-922 (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 26 Jan 2011 20:27:39 -0500; I thought the "good" 46 cooler was finned as in the 8877, etc wheras the 7B can be fan cooled horizotally. Neither one looks to be an easy conversion. Carl KM1H ______________________________________; /archives//html/Amps/2011-01/msg00344.html (16,132 bytes)
11. Re: [Amps] GI-46B in TL-922 (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Thu, 27 Jan 2011 09:30:21 +0800; Yep. Correct on all counts. Alek. From sunny Binningup, Western Australia http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap == Email scanned by PC Tools - No viruses or spyware found. (Email G; /archives//html/Amps/2011-01/msg00345.html (17,741 bytes)

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