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1. Re: [Amps] How lossy is Nylon at 50 MHz? (score: 1): Author: "lee" <pulsarxp@embarqmail.com>; Date: Sat, 7 Jul 2012 17:16:14 -0500; Delrin has very good insulating properties until it picks up moisture. Delrin is Hydroscopic and is not a good insulator once it has picked up moisture. it is not a good choice for outdoors. Nice stu; /archives//html/Amps/2012-07/msg00109.html (8,698 bytes)
2. Re: [Amps] GS-35B and Alpha 76/78 (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Wed, 1 Aug 2012 16:08:08 -0400 (EDT); I have a Alpha 78 that I plan to install a pair of 3CX800A7 tubes within. (I have the tubes and material to build new chimneys). I think what I am going to do is have a new tube chassis built to repl; /archives//html/Amps/2012-08/msg00011.html (8,483 bytes)
3. Re: [Amps] designs and age (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Thu, 16 Aug 2012 22:01:26 -0400 (EDT); I am now retired but had a career as a Sales Manager for Gilbarco. Among other things we make service station gas pumps. Gilbarco used gold plated sockets and plugs and we had no problems. Our compet; /archives//html/Amps/2012-08/msg00266.html (14,418 bytes)
4. Re: [Amps] 8877 won't load on 80M (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Mon, 28 Jan 2013 15:23:37 -0500 (EST); I'd suspect a RF plate choke which is resonant on 80. Try a different plate choke. Lee, w0vt REPLY: Does it load correctly into a dummy load? Bill, W6WRT _____________________________________________; /archives//html/Amps/2013-01/msg00168.html (8,546 bytes)
5. Re: [Amps] Chimney Material (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Fri, 1 Mar 2013 12:37:57 -0500 (EST); McMaster-Carr sells it as I have purchased it there. This is the same stuff used by Alpha Labs in there 78 amp. (I needed some to convert the amp to 3CX800A7 tubes). Lee, w0vt -- Original Message --; /archives//html/Amps/2013-03/msg00014.html (8,152 bytes)
6. Re: [Amps] 572b (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Thu, 2 May 2013 18:00:37 -0400 (EDT); If quality control is so poor, how do you test for longevity or robustness? Just checking the emission when new may have nothing to do with longevity. I'd like to know how well a Chinese 572B will ho; /archives//html/Amps/2013-05/msg00020.html (8,443 bytes)
7. Re: [Amps] 572b (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Thu, 2 May 2013 20:00:04 -0400 (EDT); Makes no sense comparing to older tubes? It makes a lot of sense to me. They are a benchmark for the new Chinese tubes quality. It has nothing to do with obtaining them. Lee, w0vt That's because you; /archives//html/Amps/2013-05/msg00028.html (8,279 bytes)
8. Re: [Amps] chassis maker? (score: 1): Author: <pulsarxp@embarqmail.com>; Date: Fri, 3 May 2013 22:39:31 -0500; I think what Dick had in mind was a company similar to the one Charles Byers owned and ran. That is, a small metal shop where one could have a thick chassis built to your dimensions. Charles offered; /archives//html/Amps/2013-05/msg00058.html (10,838 bytes)
9. Re: [Amps] chassis maker? (score: 1): Author: <pulsarxp@embarqmail.com>; Date: Sat, 4 May 2013 16:23:53 -0500; The closest Tech school around here is in China. Lee, w0vt Houston, Texas You surely have some Tech schools nearby with shops. _______________________________________________ Amps mailing list Amps@c; /archives//html/Amps/2013-05/msg00084.html (9,134 bytes)
10. Re: [Amps] Solid state amplifier cooling (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Thu, 6 Jun 2013 12:56:57 -0400 (EDT); How often do you plan to descale the amplifier and scrub off the lint? Lee, w0vt -- Original Message -- You would may need to keep a small vacuum on the water to assure that it vaporizes at a suffici; /archives//html/Amps/2013-06/msg00117.html (10,305 bytes)
11. Re: [Amps] Swan Mark 1 (score: 1): Author: L L bahr <pulsarxp@embarqmail.com>; Date: Wed, 12 Jun 2013 11:44:22 -0400 (EDT); I got one around here too. A friend gave it to me. The tubes are bad and not the same, so I have thought of converting it to some Russian GI7b ceramic tubes. I have a few of these tubes lying around; /archives//html/Amps/2013-06/msg00219.html (7,878 bytes)
12. Re: [Amps] Other HV rectifier diodes (score: 1): Author: "L L bahr " <pulsarxp@embarqmail.com>; Date: Thu, 26 Sep 2013 17:31:43 -0400 (EDT); If you have a 1000 volt power supply, what should the diode stack voltage rating be? I have heard it is good practice to make it 4 times the voltage of the operating voltage. In other words, make the; /archives//html/Amps/2013-09/msg00310.html (8,123 bytes)
13. Re: [Amps] Adhesive for plate choke? (score: 1): Author: "L L bahr " <pulsarxp@embarqmail.com>; Date: Sat, 30 Nov 2013 17:21:42 -0500 (EST); Also, it is my understanding Ameritron has wound the coil with an odd number wire size and if you wind it with an even number wire size with those same quantity of turns you will have resonant points; /archives//html/Amps/2013-12/msg00001.html (7,740 bytes)
14. Re: [Amps] Solid State Amps (score: 1): Author: "L L bahr " <pulsarxp@embarqmail.com>; Date: Fri, 17 Oct 2014 14:41:19 -0400 (EDT); What turns me off to Solid State is the fact when you need replacement transistors, they most likely have become obsolete. I'm tired of it. Same with displays. You need to throw the radio away becaus; /archives//html/Amps/2014-10/msg00126.html (14,855 bytes)
15. Re: [Amps] Hunter 2000C issue (score: 1): Author: "L L bahr " <pulsarxp@embarqmail.com>; Date: Sat, 15 Nov 2014 22:46:58 -0500 (EST); Bad filter cap. Filter caps were designed to last 6 to 8 years. Lee, w0vt R9 keeps going open. Any ideas. It's the center feed to the cap string. 5 ohm 10 w wire wound. I had switched from 75m to 20m; /archives//html/Amps/2014-11/msg00031.html (7,272 bytes)

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