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Total 33 documents matching your query.

21. [AMPS] SB-200 Problem (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 22 Mar 1999 08:38:53 -0800; ? Do you still have a 10m contact on the bandswitch? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contest; /archives//html/Amps/1999-03/msg00557.html (7,097 bytes)
22. [AMPS] SB-200 problem (score: 1): Author: balister@usit.net (Philip Balister); Date: Sun, 6 Dec 1998 10:55:26 -0500 (EST); I have a SB-200 amplifier. Recently I noticed the SWR seen by my rig feeding it has increased on 10m. I checked across several bands and found high SWR (>3:1) on 10 and 15 meters. 20 and 80 look fine; /archives//html/Amps/1998-12/msg00089.html (8,167 bytes)
23. [AMPS] SB-200 problem (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Sun, 06 Dec 1998 08:03:19 -0800; Your antenna or feedline has a problem. Try with the exciter alone and fix the antenna problem first before worrying about the power output. Vic, K2VCO Fresno CA -- FAQ on WWW: http://www.contesting.; /archives//html/Amps/1998-12/msg00090.html (8,120 bytes)
24. [AMPS] SB-200 problem (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 6 Dec 1998 08:16:39 -0800; ? I don't see how an antenna could affect swr to the tuned input circuits of the amplifier, Vic. . Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contes; /archives//html/Amps/1998-12/msg00092.html (8,193 bytes)
25. [AMPS] SB-200 problem (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Sun, 06 Dec 1998 09:43:20 -0800; Sorry, I read your message wrong. You said that the *input* swr was high. The problem may be in the input circuit of the SB200 or the tuning/loading conditions. Vic -- FAQ on WWW: http://www.contesti; /archives//html/Amps/1998-12/msg00096.html (8,189 bytes)
26. [AMPS] SB-200 problem (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Sun, 06 Dec 1998 09:47:55 -0800; I misread his message- I thought he was talking about the *output* swr. Sorry. I guess either the input circuit has been misadjusted or damaged. Maybe the tubes are weak, as he suggests, and the chan; /archives//html/Amps/1998-12/msg00097.html (8,524 bytes)
27. [AMPS] SB-200 problem (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 6 Dec 1998 13:23:04 -0500; On Sun, 06 Dec 1998 08:03:19 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Thats doubtful Vic, when tuned for maximum power transfer the antenna VSWR will have minimal effect on the input VSWR. I; /archives//html/Amps/1998-12/msg00100.html (9,274 bytes)
28. [AMPS] SB-200 problem (score: 1): Author: ah6oy@lava.net (Jim AH6OY); Date: Sun, 6 Dec 1998 19:57:47 -1000; It could easily be weak tubes. It was the case on one of my first SB-200. I have 2 now. Plus a couple Dentrons. Anyway, if your plate and grid also seem to be running lower it would be one of the sam; /archives//html/Amps/1998-12/msg00114.html (9,510 bytes)
29. [AMPS] SB-200 problem (score: 1): Author: realex@flash.net (bob alexander); Date: Thu, 24 Dec 1998 16:38:17 -0600; Howdy, I've been troubleshooting an SB200 and have gotten exactly nowhere. Measured operating conditions are: Plate voltage = 2100 indicated on front panel meter (I've measured 350 VDC +/- 10% across; /archives//html/Amps/1998-12/msg00387.html (8,256 bytes)
30. [AMPS] SB-200 problem (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Thu, 24 Dec 1998 20:03:38 -0500; On Thu, 24 Dec 1998 16:38:17 -0600 bob alexander <realex@flash.net> writes: Should be 2500V but the likely culprit is increased value multiplier resistors. No concern relating to ur main problem. Tha; /archives//html/Amps/1998-12/msg00395.html (10,736 bytes)
31. [AMPS] SB-200 problem (score: 1): Author: patrickth@mindspring.com (Patrick A. Thompson WA4TUK); Date: Fri, 25 Dec 1998 13:20:20 -0500; Don't overlook the TR relay. A similar problem many years ago was caused by a solder splash across the lugs of the TR relay on a then newly built SB220. Try checking relay function with an ohmeter wi; /archives//html/Amps/1998-12/msg00400.html (9,679 bytes)
32. [AMPS] SB-200 problem (score: 1): Author: Jim" <jdc@ieway.com (Jim); Date: Fri, 25 Dec 1998 11:51:38 -0800; I would expect to find that the input band switch has "slipped" relative to the output band switch. Carefully check the alignment of the band switches. Also be sure that the bandswitch corresponds co; /archives//html/Amps/1998-12/msg00401.html (9,683 bytes)
33. [AMPS] SB-200 problem (score: 1): Author: ah6oy@lava.net (Jim AH6OY); Date: Fri, 25 Dec 1998 14:08:23 -1000; Don't forget diodes can be a pain. They make wonderful resistors, shorts, open circuits, you name it. They are what is most common for the SB-200 to go bad when all the symptoms at first will make yo; /archives//html/Amps/1998-12/msg00405.html (8,486 bytes)

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