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1. [Amps] Amplifier output power delivery .... (score: 1): Author: <jeanpierre.behiels@engie.com>; Date: Sat, 24 Sep 2016 17:48:10 +0000; Hi members; Is there a real power output difference between a old Kenwood TL922 amplifier and a Alpha 87A automatic tune amplifer. I now the TL922 use 3-500Z graphite tubes as finals,and the Alpha 87; /archives//html/Amps/2016-09/msg00113.html (7,260 bytes)
2. Re: [Amps] Amplifier output power delivery .... (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Mon, 26 Sep 2016 00:15:56 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: TL-922s are notorious for burning up band switches. Go with the Alpha. 73, Bill W6WRT _______________________________________________ Amps mailing list A; /archives//html/Amps/2016-09/msg00115.html (7,773 bytes)
3. Re: [Amps] Amplifier output power delivery .... (score: 1): Author: Kevin <kstover@ac0h.net>; Date: Sun, 25 Sep 2016 20:51:02 -0500; The 87A uses 3CX800A7 triodes. It's my opinion that the Tl-922 suffers from an inferior power supply design. The 87A is vulnerable to PIN Diode burn out and the 3CX800A triodes can't stand any mistun; /archives//html/Amps/2016-09/msg00117.html (9,221 bytes)
4. Re: [Amps] Amplifier output power delivery .... (score: 1): Author: Vic Rosenthal 4X6GP <k2vco.vic@gmail.com>; Date: Mon, 26 Sep 2016 06:23:05 +0300; The Alpha will produce 1500 watts, even RTTY. The TL922 will put out about 1200 CW or SSB, but the transformer is a bit small for RTTY, and will overheat if you don't reduce the power. The TL922 will; /archives//html/Amps/2016-09/msg00119.html (8,568 bytes)
5. Re: [Amps] Amplifier output power delivery .... (score: 1): Author: Catherine James <catherine.james@att.net>; Date: Mon, 26 Sep 2016 14:06:55 +0000 (UTC); Related to this, is there a significant output difference between a TL922 and a Heathkit SB-220/221? Will these two-tube 3-500Z amplifiers product the same output at the same exciter power? 73, Cathy; /archives//html/Amps/2016-09/msg00122.html (8,988 bytes)
6. Re: [Amps] Amplifier output power delivery .... (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 26 Sep 2016 17:26:33 -0700; I'd say that depends on how often and how badly you mistune them. I have NOT had that problem with the 3CX800A7s in my three Ten Tec 425s, and they get a LOT of action in contests. And the only prote; /archives//html/Amps/2016-09/msg00130.html (8,872 bytes)

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