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1. [AMPS] ALPHA "SUNSPOT" SALE! (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 6 Nov 1997 09:19:21 +0000; __________________________________________________________ Hi Bill, I had no idea it was OK to advertise or do commercial marketing on this list. I'll tell Ameritron, Command, and QRO the policy has; /archives//html/Amps/1997-11/msg00062.html (9,314 bytes)
2. [AMPS] 8877 Grid Clips (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 6 Nov 1997 21:49:32 +0000; Gosh, you could have bought some finger stock. I'm sure dozens of sources of finger stock are available, and it's easy to work with. I would suggest Ameritron, QRO, ETO, or anyone in the amplifier b; /archives//html/Amps/1997-11/msg00079.html (7,648 bytes)
3. [AMPS] TL922 failure (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 6 Nov 1997 21:49:32 +0000; Vamboo to the rescue. 73, Tom W8JI -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@cont; /archives//html/Amps/1997-11/msg00080.html (7,366 bytes)
4. [AMPS] ALPHA "SUNSPOT" SALE! (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Fri, 7 Nov 1997 00:35:46 +0000; Hi Lee, Amen. Not only do we often get the reply on the reflector, we also get one via e-mail. Absolutely. That's why I made an off-line suggestion to Sandy that his message was in poor taste. I was; /archives//html/Amps/1997-11/msg00085.html (9,590 bytes)
5. [AMPS] Best HV Glitch Resistor Value/Location ? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Fri, 7 Nov 1997 00:35:46 +0000; Right, it would screw up the regulation by a considerable amount and not help the surge at all. No. A few important points often overlooked: 1.) The surge impedance includes the plate choke, wiring,; /archives//html/Amps/1997-11/msg00086.html (9,580 bytes)
6. [AMPS] failures (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sat, 8 Nov 1997 08:38:57 +0000; Yet the very people Rich claims pointed him "in the right direction", claim he totally misunderstands the problem. Interesting, we have only Rich's "word" and their denial of what he claims. When QS; /archives//html/Amps/1997-11/msg00097.html (8,003 bytes)
7. [AMPS] AL 1200 operation question (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sun, 9 Nov 1997 17:55:53 +0000; The 1200 tube is a moderate gain tube, because the driving impedance is high . That increases negative feedback. They typically take about 100 watts for full drive with 3300 volts of loaded anode vo; /archives//html/Amps/1997-11/msg00113.html (10,863 bytes)
8. [AMPS] Best HF Amplifier Today?? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 06:56:08 +0000; Don't forget to read all three. 73, Tom W8JI -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owne; /archives//html/Amps/1997-11/msg00139.html (8,921 bytes)
9. [AMPS] 3-500z tubes (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 06:56:08 +0000; They are out of warranty Martin. Seals leak and the material inside tubes outgasses for years after the tube is built, so having tubes sit on the shelves for years is actually more harmful than occa; /archives//html/Amps/1997-11/msg00140.html (8,301 bytes)
10. [AMPS] Current capacity of conductors (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 06:56:08 +0000; Few non-engineers also know how the current behaves in a conductor. The thickness of a conductor, once more than a few skin depths thick, does not affect the loss. Also flat conductors have less cur; /archives//html/Amps/1997-11/msg00141.html (9,517 bytes)
11. [AMPS] Best HF Amplifier Today?? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 06:56:09 +0000; Every amplifier has pluses and minuses Herb. The reason for this is cost. A curve of amplifiers sold versus cost appears as an exponential downward curve as cost rises. You just have to decide what; /archives//html/Amps/1997-11/msg00142.html (8,813 bytes)
12. [AMPS] AL 1200 operation question (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 06:56:09 +0000; OK, then the range of the estimate you made is probably as I posted. So you are in line with what Carl and I measure. I wonder who that was, and why he didn't make himself clear? Maybe he didn't kno; /archives//html/Amps/1997-11/msg00143.html (10,159 bytes)
13. [AMPS] Re: TopBand: Beverage (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 11:08:34 +0000; Hi Garry, I usually listen on phased loop arrays that have *very* small spurious lobes (unlike longwires). When the signal skews on the loops, it always skews on the Beverages. I never find a VK sign; /archives//html/Amps/1997-11/msg00149.html (9,024 bytes)
14. [AMPS] Nichrome or Globar (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 11:08:34 +0000; To: <amps@contesting.com> Hi John, There's nothing magic or "special" about nichrome. A resistive material is a resistive material. Properly implemented, nichrome has it's place...just as carbon, st; /archives//html/Amps/1997-11/msg00150.html (11,166 bytes)
15. [AMPS] Nichrome or Globar (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 11:08:34 +0000; I don't recall that offer Carl, I'd be happy to receive a copy of the engineering data. 73, Tom W8JI -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrat; /archives//html/Amps/1997-11/msg00151.html (8,657 bytes)
16. [AMPS] Best HF Amplifier Today?? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 11 Nov 1997 11:08:34 +0000; That's right. All the stuff about parasite and so on is just technical nonsense designed to sell suppressor kits. 8877's have had a history of service problems over the years. They were dandy tubes; /archives//html/Amps/1997-11/msg00152.html (9,697 bytes)
17. [AMPS] Yet more parasitics (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 12 Nov 1997 09:25:08 +0000; To: <amps@contesting.com> Hi Carl, That's right Carl, using a series resistance and a shunt diode for bias is just plain dumb. It makes a great bias system for a CB "linear" or low power stage, but; /archives//html/Amps/1997-11/msg00178.html (8,802 bytes)
18. [AMPS] Yet more parasitics (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 12 Nov 1997 09:25:08 +0000; To: <amps@contesting.com> Hi John, That is correct data, and exactly what Eimac and others tell me. This is the data that Rich Measures mistakenly applied to small tubes. Eimac had this problem with; /archives//html/Amps/1997-11/msg00179.html (11,178 bytes)
19. [AMPS] Filaments (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 12 Nov 1997 09:25:09 +0000; That's right Rich, too much (or too little) filament voltage is stupid. It cost nothing at all to get the transformer right. I just measured a new Ten Tec 811 amp, and the filament voltage is nearly; /archives//html/Amps/1997-11/msg00180.html (10,185 bytes)
20. [AMPS] 6M Linear designs (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 12 Nov 1997 09:25:08 +0000; Bad theory there Martin. Adding a series C does NOT reduce thank Q, contrary to what Jim might claim. It actually increases tank Q, because of the extra stray L and C of the vacuum cap. What happens; /archives//html/Amps/1997-11/msg00181.html (9,448 bytes)

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