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21. [AMPS] Alpha PA 77D (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sun, 03 Aug 1997 18:43:57 +0100; Hello all, Well I got the new investment at home today. The manual refers to a 77S as well, so there was a 2 tube made with the s suffix. This unit was orginally bought about 1976 to 1977, serial num; /archives//html/Amps/1997-08/msg00022.html (8,062 bytes)
22. [AMPS] Re: Amps Digest V1 #164 (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Wed, 06 Aug 1997 01:28:29 +0100; Hi Chris, I would take a look at some key points inside the amp before making an offer even it does put out full power. 1. See if there are any oil around the big filter cap under the rectifer assemb; /archives//html/Amps/1997-08/msg00045.html (9,637 bytes)
23. [AMPS] Alpha 77's (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 09 Aug 1997 02:49:50 +0100; Hi all, I guess some of my other posting was not clear. The 800 ma choke, is in the tank circuit not the power supply section of the amp. My B+ drops to something like 3600 volts under load, 2880 wat; /archives//html/Amps/1997-08/msg00091.html (10,481 bytes)
24. [AMPS] Delrin Spreaders (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 21 Jun 1997 01:32:35 +0100; I would to suggest a simple way of testing unknown material for RF properties. If I am not sure about how much RF a material will handle as a insulator, I just pop it into my Handy Microwave oven and; /archives//html/Amps/1997-06/msg00319.html (7,997 bytes)
25. [AMPS] Teflon, delrin etc. (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Mon, 23 Jun 1997 21:29:42 +0100; I agree with Rich, I have never found any material that could survive at 2.4 ghz and did not offer excellent insulating properties at a lower frequency. If there is such a material I would appreciat; /archives//html/Amps/1997-06/msg00344.html (7,247 bytes)
26. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Tue, 27 May 1997 22:05:46 +0100; Well if you add in the cost of buying the equalizing the resistors, the capacitors to go across them, taking the time to build all that stuff up on a board, I still think the blocks are the best val; /archives//html/Amps/1997-05/msg00229.html (10,577 bytes)
27. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Thu, 29 May 1997 00:34:11 +0100; HA, HA throw the equalizing resistors to those baby's and let them fly. I didnt think my comment about using equalizing resistors would have ever got this much attention. I have not built up a string; /archives//html/Amps/1997-05/msg00255.html (10,668 bytes)
28. [AMPS] K2AW's High Voltage Rectifier Modules (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Thu, 29 May 1997 23:00:04 +0100; Thanks for coming forward Phil and others supporting my orginal posting concerning the K2AW diode blocks. I know what works and have pushed the ratings a bit. I dont know who it was orginally said th; /archives//html/Amps/1997-05/msg00282.html (9,817 bytes)
29. [AMPS] Diode Blocks (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Fri, 30 May 1997 22:18:50 +0100; I ripped apart a junk microwave Tuesday night and took the rectifier block out and brought into the test lab here at work. We hooked it up to our trusty underground cable testing machine and proceede; /archives//html/Amps/1997-05/msg00290.html (7,127 bytes)
30. [AMPS] An Idea for a New Feature @ Dayton (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 05 Apr 1997 13:13:27 +0000; Lee was only making a joke, its nothing personal. I like reading the comments between you guys, I wish I had more time to devote to getting in myself. Ron W4WA -- FAQ on WWW: http://www.contesting.co; /archives//html/Amps/1997-04/msg00125.html (8,855 bytes)
31. [AMPS] part 97 1500 W out (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 05 Apr 1997 13:40:44 +0000; Yes, almost forgot when the FCC inspected my station the power was measured in the shack. It was found to be well within the legal limit. However they did have another vehicle set up outside to measu; /archives//html/Amps/1997-04/msg00126.html (9,280 bytes)
32. [AMPS] Dentron (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 26 Apr 1997 13:20:10 +0100; Hi gang, I agree with Carl on this one. The MLA 2500 was/is a good amp. I ran one for several years, only having to replace the filter caps and rectifiers once. I sold it about 3 weeks ago, still in; /archives//html/Amps/1997-04/msg00407.html (9,106 bytes)
33. [AMPS] Building my first amp (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sun, 27 Apr 1997 12:21:48 +0100; Hi Tom, The 4-1000 makes a great tube to run in an amp. Most folks run them in grounded grid configuration and it will require a higher drive power. It will prove to be the most stable and easier to; /archives//html/Amps/1997-04/msg00423.html (10,223 bytes)
34. [AMPS] rolling your own amps (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Fri, 07 Mar 1997 23:33:48 +0000; Hello, Building an 811 amp with 4 tubes is a good one to start out on if your just looking to get your feet wet on building an Amp. The problem with building amps these days is the parts are so expen; /archives//html/Amps/1997-03/msg00080.html (9,789 bytes)
35. [AMPS] RE voltage sag (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 15 Mar 1997 19:48:44 +0000; Hi everyone, Thought I would share this with the group since voltage regulation was the topic. If you think soft mains are a problem you should try running a big amp off a gas powered generator. One; /archives//html/Amps/1997-03/msg00154.html (7,748 bytes)
36. [AMPS] PS regulation cont. (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sun, 16 Mar 1997 14:16:26 +0000; I forgot to mention transformers in my other message and I totally agree with what Carl is saying. Unless your buying a new transformer with the ratings expected, you might be unsatisfied with the pe; /archives//html/Amps/1997-03/msg00157.html (7,418 bytes)
37. [AMPS] QROKING saga (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Mon, 17 Mar 1997 01:17:32 +0000; Assuming you do have 9 volts drop in the power line that is about 3.4 percent. I find it hard to belive your pulling 45 amps at 229 volts AC and not exceding the 2 amp rating of the transformer. What; /archives//html/Amps/1997-03/msg00164.html (6,918 bytes)
38. [AMPS] Grounding (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 22 Mar 1997 00:06:27 +0000; Grounding from the rig to amplifier will duplicate the coax shield being used as a ground in most cases. I always use RG8 spec grade coax with a heavy shield, instead of some smaller stuff and forget; /archives//html/Amps/1997-03/msg00208.html (8,029 bytes)
39. [AMPS] Re: Radio relay (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Sat, 22 Mar 1997 18:07:53 +0000; Subject: Re: [AMPS] re: Radio Relay To: <amps@contesting.com> Date: Sat, 22 Mar 1997 17:46:22 +0000 From: Ron Hooper <ab4ru@stc.net> Organization: Is there life after Contesting? Diode protection: Ho; /archives//html/Amps/1997-03/msg00212.html (12,008 bytes)
40. [AMPS] General amp questions (score: 1): Author: ab4ru@stc.net (Ron Hooper); Date: Tue, 25 Mar 1997 00:03:21 +0000; I really dont think the tube could go bad setting in a damp basement. However pulling the tube out and turning on the b+ is a good way to find out. My guess is the HV Capacitor is bad or the diodes h; /archives//html/Amps/1997-03/msg00225.html (10,368 bytes)

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