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1. [Amps] 3CX400U7 in Alpha Linear? (score: 1): Author: "Jerry Kaidor" <jerry@tr2.com>; Date: Wed, 27 Jun 2012 15:30:22 -0700 (PDT); Hello, I've seen the 3CX400U7 out there pretty cheap. But those don't have pins, they have rings. Anybody considered replacing the 3CX400A7s (when they die) in an Alpha linear with the U7's? I'm thin; /archives//html/Amps/2012-06/msg00429.html (6,988 bytes)
2. Re: [Amps] 3CX400U7 in Alpha Linear? (score: 1): Author: "Martin Sole" <hs0zed@csloxinfo.com>; Date: Thu, 28 Jun 2012 15:04:23 +0700; Jerry, I've seen the U7 tubes on occasion but whilst cheaper than the A7 8874 variant I'm not sure they are really any more plentiful. How many sets of tubes do you expect to get through in say 20 ye; /archives//html/Amps/2012-06/msg00435.html (10,216 bytes)
3. Re: [Amps] 3CX400U7 in Alpha Linear? (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 28 Jun 2012 21:19:34 -0400; I use the U7 in a combined pair of surplused Eimac cavities for 903 MHz and have had no problem finding a pair of NIB spares for $20 each. Ive thought often about using them should my Alpha 76CA fina; /archives//html/Amps/2012-06/msg00442.html (13,736 bytes)
4. [Amps] 3CX400U7 in Alpha Linear? (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Tue, 3 Jul 2012 12:05:20 +0000 (UTC); I've thought about doing a similar thing in my 8874 amp with the U7, it seems like it should work just fine, and the price of the tubes is really great. As a test I had thought about just creating so; /archives//html/Amps/2012-07/msg00015.html (8,537 bytes)
5. Re: [Amps] 3CX400U7 in Alpha Linear? (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 3 Jul 2012 09:17:19 -0400; The 8874 cooler is 1.625" diameter and the 3CX400U7/8961 is 2.0625" which is the same cooler used on the 8930 tetrode. Those are measurements I just made, I use the 8930 in a AM-6155 432 amp. At the; /archives//html/Amps/2012-07/msg00017.html (10,610 bytes)

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