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Total 14 documents matching your query.

1. [AMPS] 470uF/450v caps for $2.25 (score: 1)
Author: (Richard Carroll)
Date: Sat, 06 Feb 1999 23:12:00 -0600
They are probably rated for 85 degrees. One should insist on 105 degree rated electrolytics for best results and longest service life, especially in amplifer power supply service. Dick W0EX To: <amps
/archives//html/Amps/1999-02/msg00242.html (12,815 bytes)

2. [AMPS] 8877 Source (score: 1)
Author: (Richard Carroll)
Date: Sat, 06 Feb 1999 23:07:13 -0600
That would be Mark Olson KE9PQ near Green Bay, I believe. he lists on and usually has guaranteed 3-500z's for $85. Mark has an excellant reputation for fair dealing and honesty. I've d
/archives//html/Amps/1999-02/msg00244.html (14,228 bytes)

3. [AMPS] 3-500Z - Where to buy them? (score: 1)
Author: (Richard Carroll)
Date: Sat, 19 Dec 1998 09:23:56 -0600
Talk about timely information...I just received two Eimac 3-500's, one of which was said to be "questionable--works sometimes, other times seems like it may have a short". Date codes 1987. Inspecting
/archives//html/Amps/1998-12/msg00280.html (9,629 bytes)

4. [AMPS] Question on reforming caps NCL2000 (score: 1)
Author: (Richard Carroll)
Date: Fri, 11 Sep 1998 09:48:45 -0500
I have just acquired a very nice old National NCL2000 amp (along with the matching NCX5 transciever & NCX-A supply ) that hasn't been turned on in about 20 years. I intend to bring it up slowly to re
/archives//html/Amps/1998-09/msg00133.html (8,566 bytes)

5. [AMPS] Full QSK for the SB-200 (score: 1)
Author: (Richard Carroll)
Date: Mon, 24 Aug 1998 23:52:41 -0500
Story from Eimac VIA W6SAI in Ham Radio magazine went that a ham had tube failure in his SB220 , not once or twice, but 3 times, within the tubes' original warranty. After the third replacement, Eima
/archives//html/Amps/1998-08/msg00195.html (8,681 bytes)

6. [AMPS] 3-phase fan motor - help please (score: 1)
Author: (Richard Carroll)
Date: Tue, 25 Aug 1998 14:44:34 -0500
Hi Chris, I have a booklet that describes this in some detail. There are three ways to do it, tho only one that would apply to your case. It is quite simple requiring only 2 capacitors, one a 'start'
/archives//html/Amps/1998-08/msg00208.html (10,797 bytes)

7. [AMPS] ?? High VDC VOM (score: 1)
Author: (Richard Carroll)
Date: Fri, 26 Jun 1998 12:53:05 -0500
Older models of the Simpson 260 have a 5kv scale. Later models limit to 1kv. Some military surplus VOM's have 5 or 6 kv scales. The cautions others have given are very valid. If you don't know what y
/archives//html/Amps/1998-06/msg00242.html (8,610 bytes)

8. [AMPS] Internet Bully {ARCING MORE} (score: 1)
Author: (Richard Carroll)
Date: Fri, 17 Apr 1998 13:24:23 -0500
I've watched this reflector for some time in silence but now find a question that seems to need to be asked.... What is it about amplifier parasitics that is so foreign to so many experienced amplifi
/archives//html/Amps/1998-04/msg00130.html (10,653 bytes)

9. [AMPS] parasitics (score: 1)
Author: (Richard Carroll)
Date: Tue, 21 Apr 1998 10:04:15 -0500
Years ago I acquired a Yaesu FL2100B amp that had a known problem. Hook it up, turn it on, and it sat there quietly, waiting for you to use it. But--the second you hit it with ANY drive, it instantly
/archives//html/Amps/1998-04/msg00200.html (11,084 bytes)

10. [AMPS] parasitics (score: 1)
Author: (Richard Carroll)
Date: Tue, 21 Apr 1998 13:44:44 -0500
Yes. Key the mic without audio, nothing, The instant that you spoke the first syllable, instant plate saturation, plate current meter to the peg... Which was exactly what I expected to find, and was
/archives//html/Amps/1998-04/msg00205.html (11,669 bytes)

11. [AMPS] Thank You (score: 1)
Author: (Richard Carroll)
Date: Thu, 12 Mar 1998 17:28:54 -0600
My personal favorite is the Drake MN2700 tuner. It will handle legal limit loads, and will also work 160 mtrs and the WARC bands with no problem. It is a switched inductance (and capacitance) type,
/archives//html/Amps/1998-03/msg00218.html (8,195 bytes)

12. [AMPS] Thank You (score: 1)
Author: (Richard Carroll)
Date: Fri, 13 Mar 1998 10:10:02 -0600
I never owned a tuner of any type until I stopped using rigs with tube finals and pi network output, and almost never need one with an amp using a pi-net output. Of course a pi-net is a limited range
/archives//html/Amps/1998-03/msg00240.html (9,670 bytes)

13. [AMPS] one more mla2500 question (score: 1)
Author: (Richard Carroll)
Date: Sun, 15 Feb 1998 23:58:27 -0600
Sounds to me like you may have a power supply problem. Mine has 2300-2500 plate volts and I can drive it to 1425 max watts out with no problems. I always monitor grid current to be sure it is never e
/archives//html/Amps/1998-02/msg00102.html (8,788 bytes)

14. [AMPS] Re: resistance (score: 1)
Author: (Richard Carroll)
Date: Wed, 26 Nov 1997 11:01:46 -0600
Years ago I worked on a GE High band VHF base station that had blown the AC fuse in the plate supply. It was an old unit, in service about 15 years. The trouble turned out to be a 100K ohm 2 watt ca
/archives//html/Amps/1997-11/msg00364.html (8,757 bytes)

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