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1. [Amps] 813 hb (score: 1): Author: <hcawthra@sbcglobal.net>; Date: Sun, 5 Mar 2006 14:32:17 -0800; There's a great article in Ham Radio magazine Dec 1982 by RP Haviland using 3 813 tubes. Search the Ham Radio index there's at least 2 more 813 anp articles. 73 Howard KA6IOB ________________________; /archives//html/Amps/2006-03/msg00099.html (6,094 bytes)
2. Re: [Amps] 813 HB (score: 1): Author: "David C.Hallam" <dhallam@rapidsys.com>; Date: Sun, 5 Mar 2006 18:00:05 -0500; There also is an interesting article in the November 1961 QST about building a rack of single band GG amplifiers using 2 - 813s, easy band change. David KC2JD ________________________________________; /archives//html/Amps/2006-03/msg00100.html (6,690 bytes)
3. Re: [Amps] 813 HB (score: 1): Author: "m.ford" <k1ern@direcway.com>; Date: Sun, 05 Mar 2006 22:51:51 -0500; There is also a nice treatment of single band 813s in the 1964 handbook. The individual band was selected by lighting the filiments while screen and anode voltages were everpresent. The shadow box me; /archives//html/Amps/2006-03/msg00109.html (7,126 bytes)

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