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1. [AMPS] Alpha 78 Input matching unit (score: 1): Author: AGargarella@sipetrol.com.ar (Arturo Gargarella); Date: Mon, 2 Mar 1998 18:28:12 -0300; I can remember I read in this reflector someone saying "I can´t achieve more than 840 Watts with very low grid current (something like 20 mA)". I experienced the same on 10 and 15 meters. From; /archives//html/Amps/1998-03/msg00015.html (7,933 bytes)
2. [AMPS] Alpha 78 Input matching unit (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 3 Mar 98 05:43:57 -0800; I agree, Arturo. Grounded grid amplifiers need a tuned input network. The Alpha 78 has none. Indeed, because electron-tube transceivers had a tuned circuit in the output. sounds like it The 78's des; /archives//html/Amps/1998-03/msg00019.html (8,559 bytes)
3. [AMPS] Alpha 78 Input matching unit (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Tue, 3 Mar 1998 23:15:47 -0000; Hi Arturo & all.. You're right - at the time the '78 was designed and for most of its production life most transceivers had tuned-output, vacuum tube amps so the "flywheel" of a tuned-input PA wasn't; /archives//html/Amps/1998-03/msg00038.html (9,015 bytes)
4. [AMPS] Alpha 78 Input matching unit (score: 1): Author: dbr@alumni.caltech.edu (David B. Ritchie); Date: Wed, 4 Mar 1998 15:12:28 -0800 (PST); Hi Dick! According to Ray Heaton -- three feet max! '73 Dave N7UE David B. Ritchie, Esq. D'Alessandro & Ritchie, P.C. Intellectual Property Lawyers 1731 Technology Drive, Suite 700, San Jose, CA 9511; /archives//html/Amps/1998-03/msg00054.html (10,615 bytes)

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