- 21. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 22 Apr 2009 19:54:44 -0700
- ORIGINAL MESSAGE: REPLY: 2004 ARRL Handbook on CD, table 19.1. As I said in another post, I was mistaken about RG-213, but the other RG-8 style coax versions are almost all rated at 600 VRMS. RG-213
- /archives//html/Amps/2009-04/msg00235.html (8,625 bytes)
- 22. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 01:14:34 -0700
- ORIGINAL MESSAGE: REPLY: Yes, ladder line has been used in high SWR condx since the beginning of radio. I've used it myself although I don't have any up right now. I prefer a resonant, matched antenn
- /archives//html/Amps/2009-04/msg00240.html (8,910 bytes)
- 23. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 02:11:12 -0700
- ORIGINAL MESSAGE: REPLY: Because ou're exceeding the manufacturer's ratings. Sometimes you can get away with it, sometimes not. 73, Bill W6WRT _______________________________________________ Amps mai
- /archives//html/Amps/2009-04/msg00242.html (8,336 bytes)
- 24. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 08:48:06 -0700
- ORIGINAL MESSAGE: REPLY: Well said, Paul. As my long-departed grandfather said, "I have never regretted buying the best of something. I have often regretted buying the cheapest". 73, Bill W6WRT _____
- /archives//html/Amps/2009-04/msg00260.html (9,845 bytes)
- 25. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 09:05:09 -0700
- ORIGINAL MESSAGE: REPLY: I don't intend to start a Radio Shack bashing thread, but another of their products to avoid is their coax connectors, especially the elbow types. I once burned one out on te
- /archives//html/Amps/2009-04/msg00263.html (9,742 bytes)
- 26. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 09:13:58 -0700
- ORIGINAL MESSAGE: REPLY: I would add one more thing SWR is good for: Monitoring your antenna system. Whatever the SWR is, as long as it doesn't change things are ok. 73, Bill W6WRT __________________
- /archives//html/Amps/2009-04/msg00265.html (8,539 bytes)
- 27. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 12:13:41 -0700
- ORIGINAL MESSAGE: REPLY: We could beat this thread to death, but I believe it is EXACTLY the folks not versed in transmission line theory who SHOULD worry about SWR. At the most basic level, SWR is a
- /archives//html/Amps/2009-04/msg00283.html (9,781 bytes)
- 28. Re: [Amps] Junk Connectors (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 15:24:15 -0700
- ORIGINAL MESSAGE: REPLY: I have no personal knowledge of Amphenol's policies, but I strongly suspect a company like Amphenol which does lots of business with the military and aerospace industry does
- /archives//html/Amps/2009-04/msg00293.html (9,501 bytes)
- 29. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 15:32:23 -0700
- ORIGINAL MESSAGE: REPLY: Then the ARRL Handbook is wrong. 2500 v is plenty, even with a very high SWR. Thanks for the clarification. 73, Bill W6WRT _______________________________________________ Amp
- /archives//html/Amps/2009-04/msg00295.html (9,617 bytes)
- 30. Re: [Amps] High SWR (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 23 Apr 2009 18:00:40 -0700
- ORIGINAL MESSAGE: REPLY: Same with a pretty woman, but that soesn't seem to stop too many guys. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com ht
- /archives//html/Amps/2009-04/msg00299.html (9,025 bytes)
- 31. Re: [Amps] Band switches. (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 24 Apr 2009 06:27:52 -0700
- ORIGINAL MESSAGE: REPLY: That would certainly work, but suitable switches are very expensive unless you have a special source. High power band switches are available from: http://www.multi-tech-indus
- /archives//html/Amps/2009-04/msg00310.html (7,542 bytes)
- 32. Re: [Amps] S W R (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 24 Apr 2009 19:49:27 -0700
- ORIGINAL MESSAGE: REPLY: I see the makings of a great April Fool article. :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest
- /archives//html/Amps/2009-04/msg00328.html (7,118 bytes)
- 33. Re: [Amps] Fw: High SWR = Baluns actually (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sat, 25 Apr 2009 16:17:23 -0700
- ORIGINAL MESSAGE: REPLY: FWIW - I had a similar unwanted resonance problem in the unused coils, but mine was caused when the unused coils WERE shorted out. I rewired it so they were no longer shorted
- /archives//html/Amps/2009-04/msg00355.html (7,694 bytes)
- 34. Re: [Amps] Fw: High SWR = Baluns actually- back to amps!! (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sat, 25 Apr 2009 21:41:12 -0700
- ORIGINAL MESSAGE: REPLY: Same with my amp. Without the 160 meter coil, perfectly stable. With it, 15 meters became unusable. The Tesla effect was so bad it affected a fluorescent light hanging from t
- /archives//html/Amps/2009-04/msg00364.html (7,898 bytes)
- 35. Re: [Amps] RL Calculations (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sun, 26 Apr 2009 16:55:38 -0700
- ORIGINAL MESSAGE: REPLY: Use the key down value, since that is what is actually generating the RF. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com
- /archives//html/Amps/2009-04/msg00370.html (7,081 bytes)
- 36. Re: [Amps] RL Calculations (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sun, 26 Apr 2009 19:35:33 -0700
- ORIGINAL MESSAGE: REPLY: Agreed. The formula implies a greater precision than is actually achieved, since the factor of 1.8 is somewhat arbitrary to begin with. 73, Bill W6WRT _______________________
- /archives//html/Amps/2009-04/msg00373.html (7,544 bytes)
- 37. Re: [Amps] RL Calculations (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Mon, 27 Apr 2009 04:46:48 -0700
- ORIGINAL MESSAGE: REPLY: It can make a difference. As you go above the magic 12, circulating current increases and as you go below, harmonic suppression decreases. Neither one is a show stopper as lo
- /archives//html/Amps/2009-04/msg00377.html (8,174 bytes)
- 38. Re: [Amps] LK500 Question from New Subscriber (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Mon, 27 Apr 2009 14:09:50 -0700
- If you want a really, really quiet fan, the surest way is to install the fan somewhere else, in another room or even outdoors, and run a pipe in to the amp. It's not as hard as it sounds and the nois
- /archives//html/Amps/2009-04/msg00389.html (7,162 bytes)
- 39. Re: [Amps] Transmitting MICA caps resources (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Mon, 04 May 2009 02:18:09 -0700
- ORIGINAL MESSAGE: REPLY: Good find, Michael. Thanks. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/
- /archives//html/Amps/2009-05/msg00006.html (7,189 bytes)
- 40. Re: [Amps] Tank value problems and grid current (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Tue, 05 May 2009 06:58:54 -0700
- I haven't used a GU-74b before, but I have used a 4CX1000A and a 4CX1500B and I think they would be similar in operation. It is normal for a tetrode's screen current to vary a lot with different driv
- /archives//html/Amps/2009-05/msg00012.html (8,508 bytes)
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