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21. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 06 Feb 2001 10:55:32 -0800; Paul and company: Are we overlooking the fact that as a tube approaches it max useable freq., that the back bombardment of the cathode from electrons knocked loose from the anode does raise the catho; /archives//html/Amps/2001-02/msg00156.html (18,942 bytes)
22. [AMPS] Re: (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 06 Feb 2001 11:10:21 -0800; Neat trick. I'd like to see the circuit. yuck yuck 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com; /archives//html/Amps/2001-02/msg00157.html (7,215 bytes)
23. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 09 Feb 2001 17:13:06 -0800; That's why I have a 5.0V secondary constant voltage transformer in my 8877 amp for the heaters. No meter needed. 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@conte; /archives//html/Amps/2001-02/msg00203.html (8,979 bytes)
24. [AMPS] switches (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 09 Feb 2001 21:13:38 -0800; Phil: I agree. Anyway, as I understand things, it's best to short the un-used turns out to prevent a high EMF on un-terminated taps and thus causing a flash-over or arc in the bandswitch. At the same; /archives//html/Amps/2001-02/msg00210.html (9,860 bytes)
25. [AMPS] SB-220 High input SWR and transceiver fold back (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Thu, 22 Feb 2001 11:07:56 -0800; I guess what's needed here to assist in this problem is to know a bit more info. Oh yes, I don't like the idea of putting a tuner in the line between the tranceiver and the amp input. Especially, if; /archives//html/Amps/2001-02/msg00300.html (10,571 bytes)
26. [AMPS] runaway amp. (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 23 Feb 2001 07:09:05 -0800; Yes, I agree that an upward power drift is most unusual. As to finding the problem, I've found that cooling the component with a can of cool spray is more accurate than a blast of hot air. 73 Bob K4T; /archives//html/Amps/2001-02/msg00305.html (9,301 bytes)
27. [AMPS] K2RIW Amps using 4CX400? (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 26 Feb 2001 11:02:00 -0800; I've always said, a person has the choice: Be loud or be good. It's much easier and much less expensive to be loud than good. 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submission; /archives//html/Amps/2001-02/msg00355.html (13,280 bytes)
28. [AMPS] k2riw 2m amp! (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 26 Feb 2001 21:06:39 -0800; David and company: I seem to recall the 2M amp as one by W1SL. It works great. Much better than the "plumbers special" (*QST, Dec. 1961) For frequencies up to 175 MHz., figure output at about 55% to; /archives//html/Amps/2001-02/msg00361.html (11,721 bytes)
29. [AMPS] Filament Xfmr (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 27 Feb 2001 21:50:11 -0800; A 10 to 20 ohm 2 W carbon resistor from each side of the filament to ground works nice too. Just keep them of equal value. They provide a DC path to ground. 73 Bob K4TAX -- FAQ on WWW: http://www.con; /archives//html/Amps/2001-02/msg00366.html (7,427 bytes)
30. [AMPS] noise (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 19 Jan 2001 12:55:36 -0800; As I understand it, that's why it's called the "Childrens Band". 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2001-01/msg00515.html (8,770 bytes)
31. [AMPS] Info Needed (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sat, 20 Jan 2001 03:14:33 -0800; I need to know the voltage rating of the 2 lamps (grain of wheat style) that are used in the ICOM IC28A VHF radio. These are used illuminate the front panel display. So far, I've not been able to tur; /archives//html/Amps/2001-01/msg00525.html (6,770 bytes)
32. [AMPS] RE: Info Needed (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 22 Jan 2001 13:28:44 -0800; /RE: ICOM IC28A lamps: Thanks to all that responded. I got some good suggestions and some that are difficult to implement. A great bunch of folks you all are. That's why I asked here. 73 Bob K4TAX --; /archives//html/Amps/2001-01/msg00569.html (6,561 bytes)
33. [AMPS] WTB FILAMENT TRANSFORMER (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 22 Jan 2001 13:20:05 -0800; Nah, got some water pipes to thaw. Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-am; /archives//html/Amps/2001-01/msg00570.html (7,425 bytes)
34. [AMPS] FCC & online Auctions (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Wed, 24 Jan 2001 21:21:17 -0800; As I read it, 9KW out using a SO-239 for the output connector???? At 50 ohms that's 671 volts at 13.4 amps. Now if the amp is 50% efficient it's running about 18KW input for 9KW out (not including th; /archives//html/Amps/2001-01/msg00599.html (10,050 bytes)
35. [AMPS] neutralizing (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 30 Jan 2001 16:24:19 -0800; There is no reason that all amps, GG or otherwise, can't be or shouldn't be neutralizied. At the same time one must understand that while some tube and circuit designs are known to function quite wel; /archives//html/Amps/2001-01/msg00737.html (9,879 bytes)
36. [AMPS] Fertility (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Wed, 31 Jan 2001 10:22:53 -0800; It seems that while these windmill farms are being blamed for ghosts, at the same time, with a shortage of electricity in CA, these windmills are used to produce electricity, which by the way, is req; /archives//html/Amps/2001-01/msg00772.html (8,807 bytes)
37. [AMPS] Blown TL922A... What to do? (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Thu, 07 Sep 2000 22:09:36 -0700; AMEN! 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com; /archives//html/Amps/2000-09/msg00259.html (10,041 bytes)
38. [AMPS] Blown TL922A... What to do? (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 10 Sep 2000 20:33:16 -0700; Peter: Darn good technical answer. 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner; /archives//html/Amps/2000-09/msg00427.html (11,983 bytes)
39. Fw: [AMPS] Amp Explosions (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 10 Sep 2000 21:07:27 -0700; Jeff: I trust that you'll have color pictures and an order form on your website. Also, you do take MC and VISA don't you. Can'w wait to order some of these items. As I figure, some of the LCOFN (Larg; /archives//html/Amps/2000-09/msg00428.html (9,905 bytes)
40. [AMPS] Alpha (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 10 Sep 2000 21:29:57 -0700; Buy them now before they become collector items and the price goes through the roof. If a new in the box kit of a SB220 sold on e-bay for some $2100, imagine what a new new in the box Alpha would do; /archives//html/Amps/2000-09/msg00429.html (7,588 bytes)

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