Search String: Display: Description: Sort:

Results:

References: [ +from:kc0hfl@cox.net: 36 ]

Total 36 documents matching your query.

1. [Amps] Alpha 374A (score: 1)
Author: "robert perdue" <kc0hfl@cox.net>
Date: Thu, 12 Apr 2007 19:03:15 -0500
I have a 374A that burns the step start resistors as soon as the power switch is pressed looking for any ideas. I have checked the relays they show no shorts(contacts not burn or welded together) Cou
/archives//html/Amps/2007-04/msg00102.html (6,226 bytes)

2. [Amps] Wanted Alpha parts (score: 1)
Author: "robert perdue" <kc0hfl@cox.net>
Date: Sat, 14 Apr 2007 12:10:13 -0500
Anyone parting out a 374A I am in need of the alc board, High voltage control board. 73,Bob KC0HFL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c
/archives//html/Amps/2007-04/msg00122.html (6,330 bytes)

3. [Amps] G17-B tubes (score: 1)
Author: "robert perdue" <kc0hfl@cox.net>
Date: Sat, 7 Jul 2007 06:02:27 -0500
Looking for a source to buy G17-b tubes. Or if you have one you want to sell let me know. I am doing a GLA-1000 conversion. Thanks Bob, kc0hfl _______________________________________________ Amps mai
/archives//html/Amps/2007-07/msg00059.html (6,506 bytes)

4. [Amps] Wanted (score: 1)
Author: "robert perdue" <kc0hfl@cox.net>
Date: Mon, 24 Dec 2007 07:21:51 -0600
Looking for a pair of 3cx400a7's for my 374a or would I be money ahead to do the upgrade to the 800's ? KC0HFL _______________________________________________ Amps mailing list Amps@contesting.com ht
/archives//html/Amps/2007-12/msg00230.html (6,445 bytes)

5. [Amps] AMp Supply (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Sun, 22 Jun 2008 07:59:05 -0500
Is anyone familliar with the Amp Supply lk450 I was looking at the schematic trying to figure out if the powersupply was the same as the 2 tube model LK500 trying to find transformer rating if compat
/archives//html/Amps/2008-06/msg00171.html (6,797 bytes)

6. Re: [Amps] AMp Supply (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Sun, 22 Jun 2008 09:06:30 -0500
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2008-06/msg00175.html (8,298 bytes)

7. [Amps] Alpha 374A (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Fri, 8 Aug 2008 13:32:34 -0500
I am gathering info on converting my 374A to 3cx800's does anyone know of anything else being required other than the filament voltage? My original 8874's were shot so this is the cheapest route to b
/archives//html/Amps/2008-08/msg00048.html (6,276 bytes)

8. [Amps] Alpha 374A (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Mon, 11 Aug 2008 13:43:36 -0500
Metal work is all done on the 3cx800 conversion now I am on to the filament voltage and need some thoughts. Not much room for an on board 12v transformer so I was thinking about using a voltage doubl
/archives//html/Amps/2008-08/msg00056.html (6,979 bytes)

9. [Amps] 374A (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Tue, 12 Aug 2008 12:41:15 -0500
Thanks to NT6B for the filament transformer source. To answer some of the other questions it is a 2 tube amp there is barely room for 2 800's not alone 3 this amp was rescued from the scrap heap so f
/archives//html/Amps/2008-08/msg00069.html (6,459 bytes)

10. [Amps] 374A Filament transformer (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Tue, 12 Aug 2008 13:10:36 -0500
It is Digi Key part number DPC-16-1500 small enough to fit under the RF deck. 73,Bob _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/
/archives//html/Amps/2008-08/msg00071.html (6,203 bytes)

11. Re: [Amps] 374A Filament transformer (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Wed, 13 Aug 2008 00:03:17 -0500
I wondered that myself but was thinking theese tubes will not be running to there full potential so is3/4 amp a peice enough? I am no Alpha expert usually the amps I build I make room for al the requ
/archives//html/Amps/2008-08/msg00084.html (8,575 bytes)

12. [Amps] GI-7b issues (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Tue, 9 Sep 2008 12:57:00 -0500
Looking for any info on the GLA-1000 conversion to the GI-7b tube. I have done the w4emf conversion but I am having problems with the tubes self destructing. has anyone else had issues with this tube
/archives//html/Amps/2008-09/msg00086.html (6,745 bytes)

13. Re: [Amps] GI-7b issues (score: 1)
Author: <kc0hfl@cox.net>
Date: Tue, 9 Sep 2008 18:57:03 -0400
Thanks for all the info on the cooling I do remember the tube running warm but it never seemed out of the ordinary. But at the time of destruction my hand was not on the amp. And yes the fan was runn
/archives//html/Amps/2008-09/msg00098.html (11,583 bytes)

14. [Amps] Henry Biasing Diode (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Sun, 26 Oct 2008 08:05:10 -0500
Hello all, I am in need of the Biasing Diode in a 2KD-5 I have researched the original part # with no luck it is a Semtech SA-5534 I would like to keep it original but I could use a stud mount Zener
/archives//html/Amps/2008-10/msg00114.html (6,554 bytes)

15. [Amps] Semtech diode (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Tue, 28 Oct 2008 08:10:54 -0500
Hi all and thanks for the replies on the diode. Lots of education and I appreciate it very much. Henry radio had the diode it is on the way. 73,Bob kc0hfl ____________________________________________
/archives//html/Amps/2008-10/msg00132.html (7,203 bytes)

16. [Amps] Henry 2KD-5 (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Thu, 6 Nov 2008 11:22:28 -0600
Okay the Henry works 100% now here is the issue when the meter is in the IG grid current position the meter pegs backwards I have checked the relay all is fine there looked for obvious shorts none fo
/archives//html/Amps/2008-11/msg00040.html (6,517 bytes)

17. [Amps] Input SWR (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Tue, 9 Dec 2008 09:00:50 -0600
Hi all I hava Henry 2KD-5 That I recently installed a new set of tubes in they were purchased from RF parts. Now here is the problem after operating for a few keys the input swr climbs and folds back
/archives//html/Amps/2008-12/msg00171.html (6,626 bytes)

18. [Amps] 5cx1500 Amp (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Fri, 2 Jan 2009 07:46:46 -0600
73,Bob kc0hfl _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-01/msg00007.html (6,330 bytes)

19. Re: [Amps] 5cx1500 Amp (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Fri, 2 Jan 2009 11:16:54 -0600
I can figure it out and it does work very well I just thought it would be nice to find out if it was built from an old handbook article or if there were others out there running the same tube. See th
/archives//html/Amps/2009-01/msg00011.html (9,762 bytes)

20. Re: [Amps] 5cx1500 Amp (score: 1)
Author: "Robert Perdue" <kc0hfl@cox.net>
Date: Sat, 3 Jan 2009 21:53:35 -0600
The amp started life as a plasma generator. I did find the original Schematics from the guy who converted it with his additions added in. It is a stout amp and thanks to all for the replys. 73, Bob k
/archives//html/Amps/2009-01/msg00026.html (11,532 bytes)

Current List: 1 - 20
Page: [1] [2]
This search system is powered by Namazu