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Total 4 documents matching your query.

1. [Amps] The H&K 304H (score: 1): Author: "Edward Swynar" <gswynar@durham.net>; Date: Sat, 5 Sep 2009 10:31:42 -0400; Many thanks to all who took the time to respond to my query about the old Heintz & Kaufmann 304H (their version of the Eimac 304TH, per Lud's note to me)... Well, research into my radio shack library; /archives//html/Amps/2009-09/msg00047.html (7,392 bytes)
2. Re: [Amps] The H&K 304H (score: 1): Author: "Alex Eban" <alexeban@gmail.com>; Date: Sun, 6 Sep 2009 09:30:18 +0300; A question: does the H&K incorporate an input tank circuit. If not adding one will improve the gain. Grounded grid tubes are known to have comparatively low gain, so that every improvement in matchin; /archives//html/Amps/2009-09/msg00055.html (8,907 bytes)
3. Re: [Amps] The H&K 304H (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sun, 6 Sep 2009 08:13:57 -0400; Also use at least 3 kv, this isnt the 1000W input days and efficiency is improved to the point that a pair of 304TH's will approach 10dB stage gain in GG. OTOH, Id be more inclined to run them grid d; /archives//html/Amps/2009-09/msg00058.html (11,142 bytes)
4. Re: [Amps] The H&K 304H (score: 1): Author: "Edward Swynar" <gswynar@durham.net>; Date: Sun, 6 Sep 2009 08:40:46 -0400; Hi Alex, I'd have to re-check the circuit, & that'd mean digging-up that old QST from my archives... I was SO put off by the notion of that 120-watts of drive, I guess, that mentally I stopped lookin; /archives//html/Amps/2009-09/msg00059.html (10,510 bytes)

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