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1. [AMPS] Alpha 374 CB2 Board (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 01 Mar 2002 08:35:04 -0500; I need to know if anyone is familar with this CB2 board. I have converted this amp to two 3CX800A7s and have a bad board and needs to be repaired. The ready lights come on the minute I turn amp on???; /archives//html/Amps/2002-03/msg00007.html (6,441 bytes)
2. [AMPS] Alpha 374 control board CB2 (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Sat, 02 Mar 2002 16:58:14 -0500; Does anybody have a spare or know where I can get a control board CB2 ????? Thanks Chuck KG4EOG; /archives//html/Amps/2002-03/msg00021.html (6,136 bytes)
3. [Amps] [AMPS]374 (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 01 Mar 2002 07:43:11 -0500; Does anybody have any info on the control board CB2 in the Alpha 374?????; /archives//html/Amps/2002-03/msg00028.html (6,132 bytes)
4. [AMPS] Alpha 374 CB2 Board (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 01 Mar 2002 07:55:20 -0500; I need to know if anyone is familar with this CB2 board. I have converted this amp to two 3CX800A7s and have a bad board and needs to be repaired. The ready lights come on the minute I turn amp on???; /archives//html/Amps/2002-03/msg00029.html (6,409 bytes)
5. [AMPS] 374 CB2 board (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Sun, 03 Mar 2002 16:47:00 -0500; I tried everything you suggested. I ordered all the parts to refurbish board except resistors. Will try repairing same as soon as parts arrive. I will think about your offer (with pay) but will wait; /archives//html/Amps/2002-03/msg00033.html (6,627 bytes)
6. [Amps] [AMPS]Alpha 374 CB2 Board (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Tue, 05 Mar 2002 06:43:38 -0500; Ken, first of all which Alpha do you have? Three holer or two? If three no problem, if two you first must convert to three holer. The room between the sockets must be wider than two holer for 3CX800A; /archives//html/Amps/2002-03/msg00075.html (6,403 bytes)
7. [AMPS] tune and load caps (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Tue, 05 Mar 2002 20:03:35 -0500; This my sound stupid but does anyone know when you put knobs on the tune and load capacitors how should the capacitor vanes be positioned for 0 when the knobs read 0 to 10 ? Sorry guys, senior moment; /archives//html/Amps/2002-03/msg00108.html (6,364 bytes)
8. [Amps] [AMPS} Alpha 374 tank circuit (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 08 Mar 2002 15:50:45 -0500; Ok guys help me out here; The amp tuned before I replaced the wafer switch. The contact was almost burned completely off, but it would still tune up in manual. Now the thing works in bandpass well en; /archives//html/Amps/2002-03/msg00190.html (6,699 bytes)
9. [AMPS] Alpha 374 bias (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 15 Mar 2002 17:14:05 -0500; When I have amp on and timer timed out, operate switch on, CW/Tune- SSB switch in SSB position I get .125ma current grid and plate current is same????? I have converted to 3CX800A7s. Any way to turn; /archives//html/Amps/2002-03/msg00358.html (6,772 bytes)
10. [AMPS] Alpha 374 bias (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 15 Mar 2002 17:52:34 -0500; Well, when the amp is not being transmitted on ; just idling. 125 ma is correct. This sounds like too much idling current to me. And the tubes get pretty warm as I can tell from heat coming out of ex; /archives//html/Amps/2002-03/msg00360.html (7,140 bytes)
11. [AMPS] Alpha 374 bias (score: 1): Author: hahn@emeraldis.com (Barbara); Date: Fri, 15 Mar 2002 18:47:24 -0500; The amp worked just fine except the dumb lights stayed on all the time. ie the red excessive led and the amp worked perfect except the leds. So the grid current has only started since I have been rep; /archives//html/Amps/2002-03/msg00363.html (6,938 bytes)
12. [Amps] Bias Whoes (score: 1): Author: hahn <hahn@emeraldis.com>; Date: Mon, 23 Feb 2004 19:24:25 -0500; Anybody know anything about the russian tubes??? The GI7BTs??? I have a schematic of the way I wired tubes for bias but have scanned in to look at and comment and maybe help? I can't get tubes to hav; /archives//html/Amps/2004-02/msg00215.html (6,530 bytes)
13. [Amps] Bias Whoes (score: 1): Author: hahn <hahn@emeraldis.com>; Date: Tue, 24 Feb 2004 17:42:07 -0500; Thanks guys! I am using a pot to vary the voltage divided to the zener so I can find a value that works. Some guys say that 12-24v is good bias, and some say that you have 41v bias??? I am using a 2n; /archives//html/Amps/2004-02/msg00231.html (7,135 bytes)
14. [Amps] Chimney Material (score: 1): Author: hahn <hahn@emeraldis.com>; Date: Thu, 26 Feb 2004 07:24:11 -0500; Ok guys I found a cheap place to get silicone rubber; NAPA, yes the auto parts supplier. They have gasket material 24"x12"x1/32" thick or thicker. for about 5.99 a box rolled up. It a little stiffer; /archives//html/Amps/2004-02/msg00255.html (7,512 bytes)
15. [Amps] Chimney Material (score: 1): Author: hahn <hahn@emeraldis.com>; Date: Fri, 27 Feb 2004 07:06:19 -0500; OK guys the part number is JV127 made by Victor Renz that is the 1/16" stuff and it is dark gray or black. 5.00 a roll is good price and 1/8' stuff is speckled. Chuck AI4BB __________________________; /archives//html/Amps/2004-02/msg00281.html (7,779 bytes)
16. [Amps] Going rate for GI7B's (score: 1): Author: hahn <hahn@emeraldis.com>; Date: Sun, 28 Mar 2004 12:38:58 -0500; Dan, Chuck Here AI4BB, I buy my GI7BTs from Alex UR4LL at http://www.nd2x.net/ur4ll.html UR4LL "Stuff" for sale I bought 2 GI7BTs from him for 45.00 from russia, and that includes shipping! 1 is only; /archives//html/Amps/2004-03/msg00333.html (6,934 bytes)

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