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141. [AMPS] Re: SSB Power Output (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 23 Jul 1998 16:00:35 EDT; If I remember correctly, the standard was 50 uv for S9 and 6 db per S unit. Mark Graalman WB8JKR _____________________________________________________________________ You don't need to buy Internet a; /archives//html/Amps/1998-07/msg00174.html (10,416 bytes)
142. [AMPS] HV Transformer Idea (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sun, 21 Jun 1998 13:40:59 EDT; You'll get smoke. Mark WB8JKR _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from; /archives//html/Amps/1998-06/msg00218.html (8,640 bytes)
143. [AMPS] Alpha 87 (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 04 May 1998 19:55:06 EDT; I've got a question about the newer Alpha's, In the pictures I seen of the unit it appears that what looks like the lead from the bandswitch to the 10 meter tap on the tank inductor has a triangle pi; /archives//html/Amps/1998-05/msg00031.html (7,210 bytes)
144. [AMPS] HF-2500E, Tech+, etc. (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 09 Mar 1998 19:16:47 EST; Gee, just a couple of days ago someone was complaining the list activity had dropped way off, now there's all kinds of stuff to read! Mark WB8JKR _____________________________________________________; /archives//html/Amps/1998-03/msg00114.html (6,996 bytes)
145. [AMPS] Re: Tube chimneys (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 09 Mar 1998 19:22:49 EST; Put it in a oven and see if it will stand 150-200 F degrees without melting. I made a chimmney for my 8877 amp out of neopreme sheet about 1/8" thick and had no problems. Mark WB8JKR ________________; /archives//html/Amps/1998-03/msg00115.html (9,446 bytes)
146. [AMPS] MFJ Tuners (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 13 Mar 1998 05:20:12 EST; John, MFJ makes some "neat" products but the quality control in manufacturing and the quality of the parts used is pretty poor 90% of the time. I think of their stuff as novelty idems more than radio; /archives//html/Amps/1998-03/msg00227.html (8,570 bytes)
147. [AMPS] Tuning of amps - 3cx800s,etc.. (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sun, 15 Mar 1998 06:42:03 EST; Eric, when the loading is increased it results in a decrease in grid current, a increase in plate current, and a decrease in power output. The opposite is true when the loading in decreased. The log; /archives//html/Amps/1998-03/msg00295.html (10,067 bytes)
148. [AMPS] Contemplating Building of First amp] (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Wed, 11 Feb 1998 20:09:15 EST; I built a 160 meter amp 12 years ago using 3 813's connected as cathode fed triodes and they still play fine, 900 watts output. Mark Graalman WB8JKR __________________________________________________; /archives//html/Amps/1998-02/msg00075.html (10,051 bytes)
149. [AMPS] Coil forms (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 12 Jan 1998 05:46:32 EST; Does anyone know if those small Miller slug-tuned coil forms used in VFO inductors and tuned inputs etc, are still available and if so, who carries them? Thanks, Mark WB8JKR -- FAQ on WWW: http://www; /archives//html/Amps/1998-01/msg00034.html (6,564 bytes)
150. [AMPS] MLA-2500 (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sun, 07 Dec 1997 18:41:56 EST; Anyone know where I can get a manual or a photocopy of a manual for a MLA-2500B? Thanks, Mark WB8JKR -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrati; /archives//html/Amps/1997-12/msg00115.html (6,485 bytes)
151. [AMPS] MLA-2500 Manual (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 08 Dec 1997 05:09:43 EST; To everyone that responded to my request on the MLA-2500 manual, I found a source just a few miles from me, so the problem has been solved. Thanks for being so eager to help! 73, Mark Graalman WB8JKR; /archives//html/Amps/1997-12/msg00123.html (6,654 bytes)
152. [AMPS] Care and feeding of power grid tubes (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 05 Aug 1997 19:09:26 EDT; Hi, I'd like to get a copy of "care and feeding of power grid tubes" is it still available, and if so where can it be found? 73, Mark WB8JKR Mark Graalman Toledo, Ohio Callsign: WB8JKR Member: Societ; /archives//html/Amps/1997-08/msg00044.html (7,035 bytes)
153. [AMPS] Alpha 77SX (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 22 Jul 1997 20:08:10 EDT; Hi Guys, I'm in the process of repairing a 77SX, for those of you that may be familiar with the unit, CB-2 contains among other things, the T-R lockout timer circuitry and the manual I have dated 198; /archives//html/Amps/1997-07/msg00171.html (7,907 bytes)
154. [AMPS] Alpha 77SX (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 24 Jul 1997 11:53:35 EDT; Thanks to all for the suggestions on the 77SX, I have the delay circuit working well now. Rich your comments on the 77 are well taken and I did look over your bias system in the January 94 QST, I agr; /archives//html/Amps/1997-07/msg00202.html (7,674 bytes)
155. [AMPS] AL-80 Transformer (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 29 May 1997 08:30:03 EDT; Hi, I have a old AL-80 amplifier that is in need of a power transformer and the multimeter switch (3 position) all I want to do is put this thing back in operation and sell it, can anyone tell me whe; /archives//html/Amps/1997-05/msg00265.html (7,129 bytes)
156. Re: [Amps] PS Theory ? (score: 1): Author: wb8jkr@juno.com; Date: Wed, 27 Aug 2003 18:27:43 -0400; Actually in doubler service I think the transformer peak current is about four times the DC output current in a capacitor input filter. A transformer should be designed for doubler service. 73, Mark; /archives//html/Amps/2003-08/msg00054.html (9,473 bytes)
157. Re: [Amps] PS Theory ? (score: 1): Author: wb8jkr@juno.com; Date: Thu, 28 Aug 2003 04:45:46 -0400; Oops, I meant to say the transformer secondary current is three times (2.828) the DC output of the supply in doubler service. 73, Mark WB8JKR _________________________________________________________; /archives//html/Amps/2003-08/msg00058.html (10,237 bytes)
158. [Amps] Heath SB-200 question (score: 1): Author: wb8jkr@juno.com; Date: Thu, 18 Sep 2003 16:59:20 -0400; I have a question about the SB-200, I built one of these amps back in 1972 and the loading capacitor in the one I built, and every one I've ever repaired has always been a dual section style variable; /archives//html/Amps/2003-09/msg00172.html (7,276 bytes)
159. [Amps] Driving Z of 572-b's (score: 1): Author: wb8jkr@juno.com; Date: Fri, 10 Oct 2003 17:34:41 -0400; I know all the variables etc, but can anyone give me the "approximate" cathode driving Z of a pair of 572-B's at full input? I'm thinking (guessing) about 100-120 ohms? Mark WB8JKR __________________; /archives//html/Amps/2003-10/msg00082.html (6,395 bytes)
160. Re: [Amps] Benefits of 3-phase power? (score: 1): Author: wb8jkr@juno.com; Date: Fri, 21 Nov 2003 05:17:55 -0500; My understanding is that 60 Hz was the best "compromise" between the amount tolerable losses and the amount of required iron. Mark WB8JKR On Thu, 20 Nov 2003 07:29:46 -0800 Bill Turner <wrt@dslextrem; /archives//html/Amps/2003-11/msg00305.html (9,705 bytes)

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