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1. [Amps] 2x8877 question (score: 1): Author: "Stan C." <kf6ikc@sbcglobal.net>; Date: Sun, 28 Mar 2004 10:42:44 -0800 (PST); Hello gang. I have a amp running two (2) 3CX1500A7 tubes. It was built to use on 75m AM. Here is the problem. With it keyed....no modulation....the grid current is about 40-50 mills. When speaking th; /archives//html/Amps/2004-03/msg00342.html (6,904 bytes)
2. Re: [Amps] 2x8877 question (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 30 Mar 2004 06:10:52 -0500; Stan, If I understand your AM setup, you are driving two 8877's with a Viking Valiant transmitter that has three 6146's. The Valiant has the capability of around 600 watts pep on AM phone. Is it poss; /archives//html/Amps/2004-03/msg00347.html (8,492 bytes)
3. Re: [Amps] 2x8877 question (score: 1): Author: R.Measures <r@somis.org>; Date: Tue, 30 Mar 2004 05:20:29 -0800; ? 200mA of grid-current multiplied by the 8877's typical grid-cathode driving potential of 57Vrms = 11.4w of grid dissipation. The rated grid-dissipation of a pair of 8877s is 50w. What problem, Sta; /archives//html/Amps/2004-03/msg00352.html (8,405 bytes)
4. Re: [Amps] 2x8877 question (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Wed, 31 Mar 2004 07:35:19 -0800 (PST); Are you swamping the Valiant?? That rig does about 150W AM Carrier. That puts your PEP around the 600W level... Isn't that a lot of steam for even a pair of 8877s?? Joe, N3JI ? 200mA of grid-current; /archives//html/Amps/2004-03/msg00364.html (9,038 bytes)

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