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1. [AMPS] Bandswitch ramblings... (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 05 Sep 2001 16:04:34 -0700; <snip> _________________________________________________________ I was a production test technician on the 464/465/466 lines in Beaverton in the late '70s and early '80s. You are bringing back some m; /archives//html/Amps/2001-09/msg00067.html (7,972 bytes)
2. [AMPS] Re: [TowerTalk] True Or Not True #2 (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Thu, 06 Sep 2001 17:58:23 -0700; _________________________________________________________ I think he was saying that some signal divided by no signal is infinitely better. The math may not be exactly right but the meaning is clear.; /archives//html/Amps/2001-09/msg00089.html (8,081 bytes)
3. [AMPS] Linear AMP timing (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 08 Aug 2001 08:48:26 -0700; _________________________________________________________ In all this discussion, nobody has mentioned the bias switching. IMO, the amp should not be biased on until all the relays have closed and mu; /archives//html/Amps/2001-08/msg00090.html (8,107 bytes)
4. [AMPS] Linear AMP timing (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 08 Aug 2001 16:24:44 -0700; _________________________________________________________ The contacts must be opening more than just bias, most likely the actual cathode current. Since this is DC, you should be able to suppress th; /archives//html/Amps/2001-08/msg00093.html (9,010 bytes)
5. [AMPS] Linear AMP timing (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 08 Aug 2001 18:46:41 -0700; _________________________________________________________ It will make it impossible for a tube to be momentarily unloaded, either at the input or output. Bill, W7TI -- FAQ on WWW: http://www.contest; /archives//html/Amps/2001-08/msg00098.html (8,607 bytes)
6. [AMPS] Linear AMP timing (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 08 Aug 2001 18:46:43 -0700; _________________________________________________________ I agree about solid-state switching, but IMO, the tube should be still biased off until switching is complete, both input and output. Otherwi; /archives//html/Amps/2001-08/msg00099.html (9,044 bytes)
7. [AMPS] Linear AMP timing (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 08 Aug 2001 19:05:13 -0700; _________________________________________________________ That wasn't the quote. It was "every amp manual I've seen". Pay attention. Bill, W7TI -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submi; /archives//html/Amps/2001-08/msg00101.html (8,602 bytes)
8. [AMPS] 14KW (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Thu, 16 Aug 2001 17:58:47 -0700; _________________________________________________________ If I ever win anything big, it's going on my tombstone. My call is going on there regardless. 1000 years from now, I wonder if they will figu; /archives//html/Amps/2001-08/msg00168.html (8,172 bytes)
9. [AMPS] Tube going bad? (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Sun, 19 Aug 2001 05:38:23 -0700; I have a Commander HF-2500 which uses a pair of 3CX800's. Recently I've noticed the plate current does not drop back all the way to zero when un-keying. The longer it's on and the hotter it gets, the; /archives//html/Amps/2001-08/msg00223.html (7,497 bytes)
10. [AMPS] Tube going bad? (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Sun, 19 Aug 2001 11:15:39 -0700; _________________________________________________________ Yes, the PA output and plate current are all normal, even when the problem is most apparent. I will have to look further, it seems. Thanks to; /archives//html/Amps/2001-08/msg00227.html (7,523 bytes)
11. [AMPS] 3-500Z by Pro-tek (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Tue, 3 Jul 2001 15:27:39 -0700; I bought one Chinese-made tube from RF Parts. They check each tube individually when they receive it and they guarantee them. Mine has been fine so far. Some Chinese brands are no good, but RF Parts; /archives//html/Amps/2001-07/msg00038.html (7,636 bytes)
12. [AMPS] Using power supply from 2nd amp (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Tue, 3 Jul 2001 16:46:40 -0700; I have a Commander HF-2500 amp in fine working order, and I'd like to use the power supply in it to power a second amp. I want to build a 144 MHz amp and it doesn't seem too economical to build anoth; /archives//html/Amps/2001-07/msg00041.html (6,866 bytes)
13. [AMPS] Majordomo not too bright? (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Sun, 22 Jul 2001 15:27:26 -0700; Interesting how Majordomo will bounce email containing the "v-word" but passes the "v" itself right on through. Duh. Bill, W7TI -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@con; /archives//html/Amps/2001-07/msg00278.html (6,655 bytes)
14. [AMPS] Re: The Big V Problem (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Mon, 23 Jul 2001 09:31:38 -0700; _________________________________________________________ Like join the AMPS reflector. No, wait... I think that's been done. :-) Bill, W7TI -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissi; /archives//html/Amps/2001-07/msg00291.html (7,314 bytes)
15. [AMPS] E-mail with V attached (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Wed, 25 Jul 2001 22:20:29 -0700; _________________________________________________________ All ISP's should do this, or at least give you the option of having it done. It would go a long way toward eliminating "v's". There might be; /archives//html/Amps/2001-07/msg00313.html (7,304 bytes)
16. [AMPS] FT100D driving Alpha 87a (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Thu, 26 Jul 2001 19:05:23 -0700; _________________________________________________________ Is it even possible to cook the tubes in an 87A? With my 91b, the overdrive protection circuit would trip in an instant if I ever did that. I; /archives//html/Amps/2001-07/msg00321.html (8,361 bytes)
17. [AMPS] BEWARE OF PARTS BOUGHT FROM VE7BML - VE7BML - VE7BML (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Sat, 28 Jul 2001 15:14:14 -0700; _________________________________________________________ Yawn..... W7TI -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@conte; /archives//html/Amps/2001-07/msg00347.html (7,744 bytes)
18. [AMPS] Water dielectric? (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Tue, 31 Jul 2001 05:09:00 -0700; _________________________________________________________ Or, if not water, some non-conductive liquid. Don't have a dielectric chart handy, but there must be something suitable. Interesting thought; /archives//html/Amps/2001-07/msg00373.html (7,242 bytes)

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