Mail Archive Search: <+from:jkearman@att.net>

Results:

References: [ +from:jkearman@att.net: 93 ]

Total 93 documents matching your query.

81. Re: [Amps] Quad Tube 4cx800 hf amp (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Fri, 26 May 2006 04:25:34 +0000; FWIW, both Alpha and Ten-Tec amps run the 4CX800A at >2000 V. In both cases I believe the loaded Ep is ~2700 V. The Peter Dahl replacement transformer for the Alpha 87A has a 2050-Vac secondary, whi; /archives//html/Amps/2006-05/msg00366.html (8,186 bytes)
82. Re: [Amps] Quad Tube 4cx800 hf amp (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Sun, 28 May 2006 13:16:56 +0000; I understand that much of this is tongue-in-cheek, but just to add a touch of reality.... My experience with jammers, when guest operating SSB contests from big-gun stations, is that while 15 kW migh; /archives//html/Amps/2006-05/msg00449.html (8,649 bytes)
83. Re: [Amps] Quad Tube 4cx800 hf amp (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Sun, 28 May 2006 20:40:46 +0000; That can get expensive if you're running Europeans! I've heard this tactic employed on 20 SSB, to much consternation. Thanks for reminding me why I prefer CW, where the problem exists but is less acu; /archives//html/Amps/2006-05/msg00455.html (8,613 bytes)
84. Re: [Amps] LK-500 problem (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 29 May 2006 11:29:16 +0000; I once bought a used SB-220 that had been "converted" to a full-wave bridge rectifier instead of the full-wave voltage doubler supplied by Heathkit. NOTE: I sure would try to run that amp off 240 V,; /archives//html/Amps/2006-05/msg00481.html (7,588 bytes)
85. Re: [Amps] More LK500 (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 29 May 2006 11:44:43 +0000; Jeff, It's time to learn the fine art of reverse engineering. Make sure the HV caps are discharged and the unit is unplugged. Then get out your ohmmeter and start tracing the wiring, so you can draw; /archives//html/Amps/2006-05/msg00482.html (7,690 bytes)
86. Re: [Amps] Quad Tube 4cx800 hf amp (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 29 May 2006 11:50:44 +0000; Q. What does contesting have in common with Alzheimer's? A. You're always meeting new people. 73, Jim, KR1S http://kr1s.kearman.com/ _______________________________________________ Amps mailing list; /archives//html/Amps/2006-05/msg00483.html (8,171 bytes)
87. Re: [Amps] emtron dx-1??? for a couple hundred bucks? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 05 Jun 2006 20:36:56 +0000; Nope. Some fool bought it. I hope he has money to burn. 73, Jim, KR1S http://kr1s.kearman.com/ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.cont; /archives//html/Amps/2006-06/msg00143.html (8,676 bytes)
88. Re: [Amps] emtron dx-1??? for a couple hundred bucks? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 05 Jun 2006 21:09:32 +0000; Yeah, Will, but the buyer's a CBer. Look at what else he's bought lately. He probably thinks he died and went to heaven, getting the amp so cheap. But if you're so inclined, the time to warn 'em is b; /archives//html/Amps/2006-06/msg00145.html (9,396 bytes)
89. Re: [Amps] emtron dx-1??? for a couple hundred bucks? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Tue, 06 Jun 2006 03:57:15 +0000; You don't have Chinese character fonts installed in Windows? :) This was a Chinese scammer and the people who actually bought from him were in China, too. So the auction listings were in Chinese. The; /archives//html/Amps/2006-06/msg00151.html (9,094 bytes)
90. Re: [Amps] R. MEASURES PRAYERS ANSWERED (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Tue, 06 Jun 2006 14:57:00 +0000; Assuming you needed one minute of solid copy, isn't that 13 wpm? 73, Jim, KR1S http://kr1s.kearman.com/ _______________________________________________ Amps mailing list Amps@contesting.com http://li; /archives//html/Amps/2006-06/msg00163.html (8,546 bytes)
91. [Amps] Johnson 154-3 variable breakdown voltage? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Sat, 10 Jun 2006 22:44:11 +0000; Don't have a Johnson catalog, need to know breakdown V or plate spacing of an EF Johnons 154-3 variable. I believe this one goes to about 490 pF. Wonder if large enough to use with 2700-V Ep, 1500-W-; /archives//html/Amps/2006-06/msg00257.html (7,185 bytes)
92. Re: [Amps] SB-230 question (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 12 Jun 2006 17:44:14 +0000; Is there anything connected across the .1-ohm resistor? Sounds more like a meter shunt. The relay probably failed and the owner wasn't up to replacing it. The stock relay is no speed demon, so replac; /archives//html/Amps/2006-06/msg00263.html (7,743 bytes)
93. Re: [Amps] Ideal bandswitch brand for 3 kW out am? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Fri, 30 Jun 2006 05:58:35 +0000; 200 W. http://www.arrl.org/FandES/field/regulations/news/part97/d-305.html#313 73, Jim, KR1S http://kr1s.kearman.com/ _______________________________________________ Amps mailing list Amps@contesting; /archives//html/Amps/2006-06/msg00651.html (7,633 bytes)

Current List: 81 - 93
Page: [1] [2] [3] [4] [5]