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1. [Amps] Unknown 2m 2x4cx250b design? (score: 1): Author: Dfmich at aol.com (Dfmich@aol.com); Date: Thu Mar 6 10:15:13 2003; There was a parallel 4cx250 2 meter amp design published in May 1975 QST by Steve Gross, then W9OJI, now k4 something. I built one from a pre-publication copy of the info kindly provided by Steve. Ha; /archives//html/Amps/2003-03/msg00257.html (6,884 bytes)
2. [AMPS] Flashovers (score: 1): Author: Dfmich@aol.com (Dfmich@aol.com); Date: Fri, 13 Apr 2001 20:18:20 EDT; If someone finds plate-screen flashovers rare, I'd like to know their secrets. I have 9 4CX250 type tubes in operation here since the middle 70's and flashovers are really quite common at my house. T; /archives//html/Amps/2001-04/msg00306.html (6,902 bytes)
3. Fwd: [AMPS] 4CX350A (score: 1): Author: Dfmich@aol.com (Dfmich@aol.com); Date: Mon, 23 Apr 2001 00:14:22 EDT; --part1_b2.146700bb.2815061e_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Gents One would have to look at all the gory details to nail this down but I am will; /archives//html/Amps/2001-04/msg00486.html (11,010 bytes)
4. [Amps] Water cooling heat exchanger approaches (score: 1): Author: Dfmich@aol.com; Date: Mon, 27 Oct 2003 20:52:21 EST; Hi there I am working on the water cooling apparatus for a N6CA 1/4 KW 23 cm amp. In his article, he talks of using a "small transmission oil cooler" for the heat exchanging function. Does anyone tha; /archives//html/Amps/2003-10/msg00250.html (6,995 bytes)
5. [Amps] Heat exchanger approaches for Water Cooling tubes (score: 1): Author: Dfmich@aol.com; Date: Sat, 1 Nov 2003 13:39:08 EST; Group Thanks much for all the replies to my original posting. There were quite a few thoughts advanced all the way from "forget water cooling and add another tube" through "you don't really need a he; /archives//html/Amps/2003-11/msg00008.html (7,234 bytes)
6. [Amps] Cell Phone power amps (score: 1): Author: Dfmich@aol.com; Date: Sun, 5 Dec 2004 14:29:04 EST; Gentleman Does anyone have any info or leads to such for using cell phone power amps on 903 MHz. There doesn't seem to be much around that I have found. I have an Ericsson unit that looks good but do; /archives//html/Amps/2004-12/msg00084.html (6,840 bytes)
7. [Amps] Oscillating N6CA 1296 amp (score: 1): Author: Dfmich@aol.com; Date: Sun, 12 Nov 2006 16:30:17 EST; Has anyone (else) had problems with oscillation in an N6CA "quarter kilowatt" 1296 power amp? I have tried different tubes but that doesn't seem to be the problem. I am thinking that the loading on t; /archives//html/Amps/2006-11/msg00158.html (6,426 bytes)
8. [Amps] Motorola 900 MHz Amps (score: 1): Author: Dfmich@aol.com; Date: Fri, 15 Dec 2006 17:35:51 EST; I have a Motorola STF 2530A 150 watt amp that I am trying to get going on 903 MHz. It is a 3 stage unit and is different from those in the info I have seen on the web thusfar; the ones in the VHF Sou; /archives//html/Amps/2006-12/msg00096.html (6,586 bytes)

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