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References: [ +from:w5pvr@copper.net: 8 ]

Total 8 documents matching your query.

1. [Amps] Alpha Dials (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Sat, 4 Sep 2004 22:33:14 -0400; In restoring an Alpha 76 I need a set (2) of the 0-100 chrome dial plates that screw to the reduction drives. I have the Kurtz Kash knobs and have made dials but am looking for the OEM parts. Also co; /archives//html/Amps/2004-09/msg00072.html (6,376 bytes)
2. [Amps] Alpha 76 (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Sat, 25 Sep 2004 17:45:40 -0400; Anyone using an Alpha 76 two holer, does the plate and grid current vary with speech on ssb?. Mine indicates ok in tune but no plate or grid I. while talking with proper "operate" button pushed. Prob; /archives//html/Amps/2004-09/msg00454.html (6,345 bytes)
3. [Amps] Two Svetlana 3CX400A7 8874's (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Sat, 18 Dec 2004 12:24:08 -0500; Anyone know the date codes, one is stamped 97 219 the other 98 026 or 028. They are supposed to be bad but they look like new. Internally where is the getter, cathode, plate? I will hipot them, then; /archives//html/Amps/2004-12/msg00232.html (7,114 bytes)
4. [Amps] Amp Swap (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Wed, 9 Mar 2005 20:11:41 -0500; Fully adjustable silver plated brass cavity with RCA 8122. Power amp from Motorola police transmitter working when removed, can be tuned down to 70 Centimeters. Also Small Motorola power Amp. PN 1275; /archives//html/Amps/2005-03/msg00248.html (7,008 bytes)
5. [Amps] Building Or Buying A Tuned Input Network (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Tue, 24 Jan 2006 10:46:25 -0600; Instead of designing and testing multiple pi networks then working out the switching with the plate tank, why not use a simple multi frequency tuner. One variable cap and one coil, you can peak the d; /archives//html/Amps/2006-01/msg00579.html (8,288 bytes)
6. Re: [Amps] Building Or Buying A Tuned Input Network (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Tue, 24 Jan 2006 13:34:58 -0600; Carl, Use a dual 350/400 ufd cap out of an old tube type bc set. Coil should be 1 and 1/2 to 2 inches in dia approx 60 turns. Center tap the coil. Connect one side of the coil to one stator on the ca; /archives//html/Amps/2006-01/msg00583.html (8,843 bytes)
7. Re: [Amps] Building Or Buying A Tuned Input Network (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Tue, 24 Jan 2006 18:01:20 -0600; Carl, It is an old,old circuit. It was in QST many years ago. It was designed to be a plate tank for a low power class c amplifier. Just how to couple in and out of it I don't remember, but I do know; /archives//html/Amps/2006-01/msg00593.html (8,884 bytes)
8. Re: [Amps] Building Or Buying A Tuned Input Network (score: 1): Author: "Bob Kirkland" <w5pvr@copper.net>; Date: Wed, 25 Jan 2006 10:56:17 -0600; Hola Guillermo, Yes I agree that input circuit works well however it would be a little awkward in a multi band amp in changing frequencies. I like the swamping resistor across the coil. Bob,w5pvr ___; /archives//html/Amps/2006-01/msg00607.html (8,609 bytes)

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