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Total 7 documents matching your query.

1. [Amps] alpha 78 (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Sat, 2 Jul 2005 07:29:33 -0700
Just received a Alpha 78 amp. The 78 has been sitting on a shelf for 10 years. Is there anything I should do before turning it on ? Replace ps caps? Howard KA6IOB ____________________________________
/archives//html/Amps/2005-07/msg00004.html (6,652 bytes)

2. [Amps] ps caps (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Sun, 21 Aug 2005 16:20:20 -0700
I need a opinion. I want to replace the filter caps in my Alpha 78 amp. Alpha wants $30 ea for the caps mouser wants $16.40 ea for the exact same part number. Alpha claims caps are matched. Any ideas
/archives//html/Amps/2005-08/msg00643.html (6,769 bytes)

3. [Amps] ps-caps (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Sun, 21 Aug 2005 17:16:12 -0700
the caps are 450v 210uf Mallory cgs211t450r4c same as whats on the original caps. Any advantage going with a higher value cap such as a 450uf 500v unit _______________________________________________
/archives//html/Amps/2005-08/msg00647.html (6,529 bytes)

4. [Amps] cleaning 8874 tubes (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Wed, 31 Aug 2005 21:22:14 -0700
Hello, I was given a couple 8874 tubes that were left in a Alpha 76 stored in a old barn. Lots of moisture. The tubes have some rust/corrosion on them. Whats the best way to clean them? Silver cleane
/archives//html/Amps/2005-09/msg00000.html (5,820 bytes)

5. [Amps] 813 hb (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Sun, 5 Mar 2006 14:32:17 -0800
There's a great article in Ham Radio magazine Dec 1982 by RP Haviland using 3 813 tubes. Search the Ham Radio index there's at least 2 more 813 anp articles. 73 Howard KA6IOB ________________________
/archives//html/Amps/2006-03/msg00099.html (6,094 bytes)

6. [Amps] BeO (score: 1)
Author: <hcawthra@sbcglobal.net>
Date: Sun, 18 Nov 2007 11:05:47 -0800
I'm taking my 8 new spare 8874's to the hazard waste center Monday. Howard KA6IOB _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mai
/archives//html/Amps/2007-11/msg00253.html (6,176 bytes)

7. [Amps] Commander HF 2500 (score: 1)
Author: Howard Cawthra <hcawthra@sbcglobal.net>
Date: Wed, 20 Apr 2016 15:55:21 +0000 (UTC)
I've acquired a near mint low usage commander HF2500. Amp works great, output is what it should be. It was originally purchased in 1993. My question is about the capacitors in the power supply, shoul
/archives//html/Amps/2016-04/msg00036.html (7,154 bytes)

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