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Total 19 documents matching your query.

1. [AMPS] explain this one (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 1 Aug 1999 06:53:15 -0400; You are correct Vic. The voltage will soar to whatever value necessary to until something absorbs the power. It is virtually impossible to build a tank that will withstand voltages with no load at f; /archives//html/Amps/1999-08/msg00000.html (7,540 bytes)
2. [AMPS] explain this one (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 1 Aug 1999 13:16:21 -0400; Mario did not try all phase angles or even measure at full drive, he did not want to ruin his PA. No one on this reflector is dumb enough to think the switch in the SB-220 will handle 5 kV or more,; /archives//html/Amps/1999-08/msg00002.html (10,052 bytes)
3. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 1 Aug 1999 12:17:44 -0700; ? Because Mario was measuring the potential on the Tune-C, not the potential at the anode. ? Quoting Mario: -- When you make stuff up to support your case, Tom, you only undermine it. . ? Anyone wit; /archives//html/Amps/1999-08/msg00005.html (12,571 bytes)
4. [AMPS] explain this one (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Sun, 1 Aug 1999 14:21:59 -0700; Hi Rich, Rich replied: ? To find out, I would have to walk out to the breezeway. . How about naming some good manufacturers and some not so good manufacturers, in your opinion, before I take the walk; /archives//html/Amps/1999-08/msg00006.html (8,699 bytes)
5. [AMPS] explain this one (score: 1): Author: zeitler@ibm.net (zeitler@ibm.net); Date: Sun, 1 Aug 1999 23:22:17 -0700; Phil, So the solution to the autotransformer action was in your case to short out the 160 meter section with a relay when not in use? I have a similar problem with my HB 3-500Z deck. When on 75 meter; /archives//html/Amps/1999-08/msg00017.html (10,042 bytes)
6. [AMPS] explain this one (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Mon, 2 Aug 1999 01:55:24 -0700; Hi Lane and Phil, Here is a picture of the HENRY solution to this problem in the 3K Premier (160-10M) series. I had a good picture of this and whipped up a quick page. See http://radiodan.com/Henry/m; /archives//html/Amps/1999-08/msg00020.html (12,311 bytes)
7. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 2 Aug 1999 16:08:31 -0700; ? none ? no ? What, me worry? ? As I recall, one customer miswired some and destroyed them. Otherwise, out of seven reels, there have been no other reported problems. ? I would have to go look. ? Ea; /archives//html/Amps/1999-08/msg00046.html (8,791 bytes)
8. [AMPS] Explain This one (score: 1): Author: vogler@innercite.com (Bill Vogler); Date: Wed, 4 Aug 1999 13:17:56 -0700; Ok Folks - I think I have the answer on this problem. To quickly recap I'm burning a 160 meter padding capacitor on the LOAD (antenna) side in the tank circuit on my LK-500ZA when transmitting on 10; /archives//html/Amps/1999-08/msg00092.html (8,320 bytes)
9. [AMPS] Explain This one (score: 1): Author: Jim" <jdc@ieway.com (Jim); Date: Wed, 4 Aug 1999 17:30:30 -0700; I would bet if you were to do some careful calculations, there would be a resonate circuit on or about 10 meters. The circuit would be formed by the connecting wire and cap leads, and the capacitance; /archives//html/Amps/1999-08/msg00099.html (10,063 bytes)
10. [AMPS] explain this one (score: 1): Author: vogler@innercite.com (Bill Vogler); Date: Fri, 30 Jul 1999 16:07:13 -0700; Ladies and Gentleman: The saga continues with my amplifier recently purchase Amp Supply LK500-ZA. I received a very helpful response from a member in this group familiar with the amp and I have decid; /archives//html/Amps/1999-07/msg00650.html (9,216 bytes)
11. [AMPS] explain this one (score: 1): Author: vk6apk@eon.net.au (Alek Petkovic); Date: Sat, 31 Jul 1999 07:34:15 +0800; G'day Bill, I've got the same problem with my 2 x 3-500Z homebrew amp. It is my spare amp. I put a new 10 -20m tank coil in and it is now misbehaving in the same way as yours. When I tune up on 10m,; /archives//html/Amps/1999-07/msg00651.html (10,826 bytes)
12. [AMPS] explain this one (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Fri, 30 Jul 1999 20:08:36 -0500; bandswitch padding The You have an autotransformer going for you. With the addition of the WARC bands plus 160 meters a coupling problem exists within the tank circuit. If you will notice on the sch; /archives//html/Amps/1999-07/msg00652.html (8,658 bytes)
13. [AMPS] explain this one (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 31 Jul 1999 05:18:46 -0400; Hi Bill, Is the switch in your LK-500 a pick-up and hold type, where as it moves along the unused taps are tied to the common terminal?? You can get series resonances on big components with long lead; /archives//html/Amps/1999-07/msg00653.html (8,502 bytes)
14. [AMPS] explain this one (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 31 Jul 1999 05:18:46 -0400; Hi Alek, What you have is high voltages appearing because of a poor switching scheme or wiring error. I'd wager if you look, you simply have not tied the tank coil taps that aren't being used to the; /archives//html/Amps/1999-07/msg00655.html (8,448 bytes)
15. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 03:44:11 -0700; ? My guess is that arcing of open 160m Tune padder contacts on another band could be due to different mechanism. /See the bandswitch on page 33 of the October, 1990 *QST*/. ? The 160m Tune padder co; /archives//html/Amps/1999-07/msg00657.html (9,012 bytes)
16. [AMPS] explain this one (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Sat, 31 Jul 1999 09:12:13 -0700; This is apparently a common problem on SB1000/AL80 type amplifiers. My SB1000 bandswitch was damaged in this way. What happens is that the stationary contact of the bandswitch (which happens to be cl; /archives//html/Amps/1999-07/msg00660.html (8,851 bytes)
17. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 13:13:06 -0700; stationary connected to the smoothed. This series are ? The bandswitches used in the AL-80, SB-220 and SB-1000 are similar and have a measured breakdown potential of over 5500v. The actual tank piv; /archives//html/Amps/1999-07/msg00661.html (9,589 bytes)
18. [AMPS] explain this one (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Sat, 31 Jul 1999 14:36:48 -0700; Rich, If the tank is resonated with too-light loading, the 'loaded' Q of the circuit will be much higher and so will the voltage. This can happen due to an inexperienced operator or antenna switching; /archives//html/Amps/1999-07/msg00664.html (8,291 bytes)
19. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 15:43:01 -0700; During the grate parasitics debate, Tom Rauch claimed the following" -- From: W8JITom@aol.com Newsgroups: rec.radio.amateur.homebrew Subject: Re: Good source for amplifier tips To: <amps@contesting.; /archives//html/Amps/1999-07/msg00665.html (10,815 bytes)

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