Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+NOS\s+4CX1000A\s+test\s+and\s+reconditioning\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+NOS\s+4CX1000A\s+test\s+and\s+reconditioning\s*$/: 11 ]

Total 11 documents matching your query.

1. [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Hsu" <Jbenson@sohu.com>; Date: Wed, 6 Sep 2006 20:07:11 +0800; Hi, I will send some NOS Chinese metal-cermic 4CX1000A(we called FU-100F)tubes to some guys in the list. I think I should test every tube after I send them.But I have not any amp using 4CX1000A,(the; /archives//html/Amps/2006-09/msg00115.html (7,386 bytes)
2. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Hsu" <Jbenson@sohu.com>; Date: Wed, 6 Sep 2006 20:13:39 +0800; PS,I want to how to test and recondition thoriated tungsten tube ex. 4X500A too.Thanks! 73! Hsu _______________________________________________ Amps mailing list Amps@contesting.com http://lists.cont; /archives//html/Amps/2006-09/msg00116.html (6,580 bytes)
3. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Dan Hearn" <dhearn@air-pipe.com>; Date: Fri, 8 Sep 2006 09:19:53 -0700; Good information here. http://kk5dr.com/Tubes.html 73, Dan, N5AR PS,I want to how to test and recondition thoriated tungsten tube ex. 4X500A too.Thanks! 73! Hsu ______________________________________; /archives//html/Amps/2006-09/msg00142.html (7,669 bytes)
4. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: Mike Manship <mjmanship@iquest.net>; Date: Fri, 8 Sep 2006 13:36:48 -0400; Quoting Dan Hearn <dhearn@air-pipe.com>: One of the "facts" stated on this web page is that broadcast stations keep all their final amplifier tubes filaments powered at all times. I used to work at a; /archives//html/Amps/2006-09/msg00144.html (7,383 bytes)
5. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Fri, 8 Sep 2006 20:35:09 -0400; I worked at three stations and consulted for dozens more and none of them had the filaments on all the time. What I've seen agrees with what you have seen. 73 Tom ___________________________________; /archives//html/Amps/2006-09/msg00146.html (8,117 bytes)
6. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Fri, 8 Sep 2006 19:38:31 -0400; When I was in the broadcast business, I do not recall that being standard practice -- even in major markets where funding is not an issue. Sure, there may be a few stations that have tried it, but t; /archives//html/Amps/2006-09/msg00147.html (9,229 bytes)
7. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Joe Subich, W4TV" <w4tv@subich.com>; Date: Fri, 8 Sep 2006 21:46:15 -0400; I have been Director of Engineering at four different television stations, had corporate responsibility for additional stations and visited countless transmitter sites over 20+ years. In every case; /archives//html/Amps/2006-09/msg00149.html (8,145 bytes)
8. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Robert B. Bonner" <rbonner@qro.com>; Date: Fri, 8 Sep 2006 21:50:59 -0500; Well now what? I built this big test rack last night and have 2 3-500's, 6 8877/YU-158's, 3 3CX3000A7's, 2 YC-156's an 8938 heated up. The 14 12AX7's look pretty cool - fans running everywhere All my; /archives//html/Amps/2006-09/msg00150.html (9,990 bytes)
9. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Robert B. Bonner" <rbonner@qro.com>; Date: Fri, 8 Sep 2006 22:02:44 -0500; I think we're going to have to admit that both methods are in use, filaments on or off. It all depends on the Attitude of the chief and the mentality of the owners. Can you live with a 10 minutes of; /archives//html/Amps/2006-09/msg00151.html (8,738 bytes)
10. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Fri, 8 Sep 2006 22:53:00 -0400; As I recall, a filament reduction to 80% is useful as "black heat" and some high-power commercial transmitters have the ability to go into a black heat mode during extended standby periods. This may; /archives//html/Amps/2006-09/msg00152.html (9,305 bytes)
11. Re: [Amps] NOS 4CX1000A test and reconditioning (score: 1): Author: "Joe Subich, W4TV" <w4tv@subich.com>; Date: Sat, 9 Sep 2006 15:40:29 -0400; Paul, Most of the TV transmitters used indirectly heated filaments that had significant warm-up time. Timers were typically 10 to 15 minutes although manufacturers often specified the filament time a; /archives//html/Amps/2006-09/msg00157.html (9,478 bytes)

Current List: 1 - 11
Page: [1]