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41. [Amps] Semtech SA1388? (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Wed, 31 Mar 2010 16:19:29 -0400; Does anyone know what a Semtech "Slimpac" SA1388 rectifier is good for? Seems too big for a small signal diode, yet may not be big enough for power supply use. The case is ~2" long and 0.300" wide an; /archives//html/Amps/2010-03/msg00956.html (8,046 bytes)
42. Re: [Amps] Semtech SA1388? (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Wed, 31 Mar 2010 16:59:54 -0400; Thanks to everyone that was kind enough to answer my question (curiosity?) regarding the SA1388 diode packages "discovered" in my junk box. -- 73, Mike, K4GMH ________________________________________; /archives//html/Amps/2010-03/msg00970.html (8,744 bytes)
43. Re: [Amps] Automotive Relays (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Fri, 6 Aug 2010 21:32:55 -0400; Here the Tyco relays have been used without a failure for over five years in various homemade stack matchers, ant. switchers, etc. while running 1500 W in RTTY contests. They are also used at a local; /archives//html/Amps/2010-08/msg00072.html (17,281 bytes)
44. Re: [Amps] BC-375E Switch (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Sun, 5 Feb 2012 23:54:32 -0500; Hello John, See the following site on the use of a modified BC-375 sw. used for amp. band sw. http://w4emf.gs35b.com/2005-GS-35B/ -- 73, Mike, K4GMH _______________________________________________ Am; /archives//html/Amps/2012-02/msg00034.html (7,078 bytes)
45. [Amps] Neon xfmr for HiPot (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Sun, 15 Jul 2012 23:28:49 -0400; Hello, Can a 10 KV, 30 mA., xfmr used for a neon light be used in a hipot tester? Seems like a natural with just a small variac used to vary the primary voltage (120 VAC) for adjusting the output vol; /archives//html/Amps/2012-07/msg00198.html (6,377 bytes)
46. Re: [Amps] Overdrive protection (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Sat, 28 Jul 2012 12:17:51 -0400; Hello Bert, Thanks for the info. on how to tame the IC746 overshoot. Too bad I didn't learn about the 746's overshoot problem or your approach to tame it until it cost me a 4CX1600 in a HB amp. Chang; /archives//html/Amps/2012-07/msg00336.html (12,636 bytes)
47. Re: [TowerTalk] Relay Recommendations (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Fri, 9 May 2014 20:26:10 -0400; Hello Matt, I've been using Tyco RTB14012F SPDT relays (12 V DC ~30 ma. nominal op. current) in all my remote antenna switching arrangements. Run 1500 Watts RTTY, SO2R. All the relays are controlled; /archives//html/Amps/2014-05/msg00054.html (8,303 bytes)
48. [Amps] Chimney for GS35B (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Thu, 27 Oct 2016 09:10:29 -0400; Hello, Need a couple of teflon chimneys for a pair of GS35B amps. Suggestions on where I can get them? Presently using PVC, but have had not good results in the long run with these type of chimneys e; /archives//html/Amps/2016-10/msg00127.html (6,527 bytes)
49. [Amps] GS35B Amps Common Problem (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Sun, 27 Oct 2019 23:52:08 -0400; Hello, My two homemade GS35B amps exhibit the same symptoms of a problem and can't seem to figure what is the "common" problem. This happened recently after several years of operating both amps witho; /archives//html/Amps/2019-10/msg00086.html (8,288 bytes)
50. Re: [Amps] GS35B Amps Common Problem (score: 1): Author: Mike <k4gmh@arrl.net>; Date: Wed, 30 Oct 2019 14:24:00 -0400; Hello, Swapped out the GS35B in one of the amps with NOS GS35B and the amp. works as it did. Why did the initial tube fail - don't know as HV supply, bias system, filament voltage, etc. checked out.; /archives//html/Amps/2019-10/msg00097.html (11,034 bytes)

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