- 321. Re: [Amps] GS-35B efficiency (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sun, 20 Dec 2009 08:10:38 -0800
- ORIGINAL MESSAGE: REPLY: Well, that pretty much kills my variable-mu theory. Next? 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co
- /archives//html/Amps/2009-12/msg00511.html (7,619 bytes)
- 322. Re: [Amps] Re GS-35B hours.. (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sun, 20 Dec 2009 08:13:02 -0800
- ORIGINAL MESSAGE: REPLY: Later on in the tube's life, did you have to increase the heater voltage, or just leave it constant for the entire lifetime? 73, Bill W6WRT __________________________________
- /archives//html/Amps/2009-12/msg00512.html (7,917 bytes)
- 323. Re: [Amps] Ameritron AL-80A Receive muted - relay? (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Tue, 22 Dec 2009 18:45:17 -0800
- ORIGINAL MESSAGE: REPLY: I have an SB-1000, a clone of the AL-80A, and I have experienced the same thing. My problem was the T/R relay. Polish the contacts with some very fine emery cloth, clean off
- /archives//html/Amps/2009-12/msg00527.html (7,558 bytes)
- 324. Re: [Amps] Ameritron AL-80A Receive muted - relay? (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sat, 26 Dec 2009 18:36:05 -0800
- ORIGINAL MESSAGE: REPLY: I guess we'll have to agree to disagree on that. If you have a relay where the contacts are physically touching but not making electrical contact, you're going to need someth
- /archives//html/Amps/2009-12/msg00546.html (8,493 bytes)
- 325. Re: [Amps] 813's on 160. (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 01 Jan 2010 17:41:07 -0800
- ORIGINAL MESSAGE: REPLY: You can probably get by with the 16 uH that's in there now if you add more capacitance to the tune and load caps. You would have somewhat more Q than is optimum but on 1.8 MH
- /archives//html/Amps/2010-01/msg00006.html (7,783 bytes)
- 326. Re: [Amps] GU 74 operating parameters (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 06 Jan 2010 17:32:00 -0800
- ORIGINAL MESSAGE: REPLY: There seems to be some confusion as to what specs apply. According to http://frank.pocnet.net/sheets/018/g/GU74B.pdf The max anode current is .75 A, not .5. In any event, the
- /archives//html/Amps/2010-01/msg00038.html (8,377 bytes)
- 327. Re: [Amps] Ten Tec Centurion (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sat, 09 Jan 2010 18:06:23 -0800
- ORIGINAL MESSAGE: REPLY: If you use a disk ceramic, try to find a NP0 type. Any other type will drift as it heats up from the circulating tank current. Not a major deal, but a nuisance to be avoided
- /archives//html/Amps/2010-01/msg00067.html (6,995 bytes)
- 328. Re: [Amps] Plate Chokes.... Yet Again.... (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Tue, 12 Jan 2010 13:57:24 -0800
- ORIGINAL MESSAGE: REPLY: One thing I found out the hard way - do not place the choke too close to the tube's anode. I had one of the RF Parts units installed about one inch away from the anode and th
- /archives//html/Amps/2010-01/msg00103.html (7,538 bytes)
- 329. Re: [Amps] which HV connector to use? (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Tue, 12 Jan 2010 21:34:33 -0800
- ORIGINAL MESSAGE: REPLY: One option you can homebrew is to cut a 1.5 inch hole in the panel, mount a piece of plastic behind that and then mount a standard banana jack in the center. In order to prev
- /archives//html/Amps/2010-01/msg00126.html (9,147 bytes)
- 330. Re: [Amps] Which HV connector to use. (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 13 Jan 2010 13:14:26 -0800
- ORIGINAL MESSAGE: REPLY: IMO, the best approach is to NOT use a connector at the RF deck end. Just hardwire the HV wire directly into the amp and put a connector at the power supply end. Connectors a
- /archives//html/Amps/2010-01/msg00153.html (7,883 bytes)
- 331. Re: [Amps] which HV connector to use? (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 13 Jan 2010 13:19:56 -0800
- ORIGINAL MESSAGE: REPLY: The best approach is to use a connector ONLY at the power supply end of the HV wire. The amplifier end should be hard-wired with no connector and a good strain relief. That w
- /archives//html/Amps/2010-01/msg00154.html (8,655 bytes)
- 332. Re: [Amps] Chimney's (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 14 Jan 2010 19:08:42 -0800
- ORIGINAL MESSAGE: REPLY: A replacement chimney for a Coleman lantern fits perfectly and is made of Pyrex heat resistant glass. I have used them in two GS-35b amps and they work fine. Just glue it dow
- /archives//html/Amps/2010-01/msg00196.html (9,542 bytes)
- 333. Re: [Amps] (Perhaps) A plate choke too far ... (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 14 Jan 2010 19:13:08 -0800
- ORIGINAL MESSAGE: REPLY: Beware of anything KK5DR says. The guy is incompetent when it comes to electronic design. I have chosen my words carefully. 73, Bill W6WRT ___________________________________
- /archives//html/Amps/2010-01/msg00197.html (8,965 bytes)
- 334. Re: [Amps] filament choke screws (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Sun, 17 Jan 2010 11:00:19 -0800
- ORIGINAL MESSAGE: REPLY: Your local hardware store should have penetrating oil. Put a drop or two where it can penetrate into the threads and give it at least 24 hours to do its magic. They should co
- /archives//html/Amps/2010-01/msg00245.html (7,588 bytes)
- 335. Re: [Amps] RF issue (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Mon, 25 Jan 2010 15:09:07 -0800
- ORIGINAL MESSAGE: REPLY: A few suggestions: 1. If the ground wire you have is one that runs from your chassis outside to an earth ground, remove it. You don't need it and it may actually be acting as
- /archives//html/Amps/2010-01/msg00321.html (8,396 bytes)
- 336. Re: [Amps] Good amp to buy (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 27 Jan 2010 11:26:58 -0800
- ORIGINAL MESSAGE: REPLY: Does anyone recall what the original selling price was? Just curious. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com htt
- /archives//html/Amps/2010-01/msg00381.html (8,698 bytes)
- 337. Re: [Amps] Good amp to buy (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 27 Jan 2010 15:32:40 -0800
- ORIGINAL MESSAGE: REPLY: Thanks Carl, sounds like a fair price for a quality amp. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
- /archives//html/Amps/2010-01/msg00389.html (9,222 bytes)
- 338. Re: [Amps] Plate Choke Resonances (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 29 Jan 2010 08:36:33 -0800
- ORIGINAL MESSAGE: REPLY: To make an exact duplicate you also have to take the kind of insulation into account. Different types have different dielectric constants and will change the amount of capaci
- /archives//html/Amps/2010-01/msg00426.html (8,042 bytes)
- 339. Re: [Amps] Good amp to buy maybe build.. (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 29 Jan 2010 20:49:13 -0800
- There is one primary question a person should ask themselves when thinking of getting their first amp: Do I really want to BUILD an amplifier or do I just want to HAVE an amplifier? Despite what you
- /archives//html/Amps/2010-01/msg00476.html (8,223 bytes)
- 340. Re: [Amps] Plate Choke Resonances (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Fri, 29 Jan 2010 20:56:03 -0800
- ORIGINAL MESSAGE: REPLY: The purpose of shorting is to find SERIES resonances with the grid dip meter. You need to check for both parallel and series (i.e. with and without the short). 73, Bill W6WRT
- /archives//html/Amps/2010-01/msg00477.html (8,032 bytes)
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