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Total 22 documents matching your query.

1. [Amps] Need info on adding WARC bands to an old HB 4-1000A amp (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Fri, 03 Dec 2004 09:13:45 -0600
I'm new to this list, and I apologize if this has been asked before, but I didn't find what I needed in searching the list archives. I have a HB 4-1000A amp, covering 80-10, which I built in 1969 fro
/archives//html/Amps/2004-12/msg00043.html (7,182 bytes)

2. [Amps] Re: Need info on adding WARC bands to an old HB 4-1000A amp (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Mon, 06 Dec 2004 05:53:09 -0600
I've received a number of good suggestions, both through the list and by private email. Thanks to all for your help. 73, John, K9MM _______________________________________________ Amps mailing list A
/archives//html/Amps/2004-12/msg00109.html (6,568 bytes)

3. Re: [Amps] 1 tube or two ?? (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Mon, 12 Feb 2007 05:45:32 -0600
I built a 4-1000A amp in 1969 and I'm still using it with the original tube. The thing I like best about it is that I don't have to wait 3 minutes for it to warm up as with external-anode tubes. Also
/archives//html/Amps/2007-02/msg00208.html (9,006 bytes)

4. Re: [Amps] rfi (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Tue, 01 May 2007 13:45:23 -0500
About 40 years ago, when I was still living with my parents, I had an end fed random length long wire hooked up to a Johnson Matchbox. I used it on 40 and 80. About that time, I built my 4-1000 amp a
/archives//html/Amps/2007-05/msg00006.html (7,197 bytes)

5. Re: [Amps] SB200 4.1 volts (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 02 May 2007 05:45:00 -0500
When I was in college, we had a Hunter Bandit 2000 at the club station. At some point it lost a lot of power output. In troubleshooting it, we discovered obvious cold solder joints where the wires o
/archives//html/Amps/2007-05/msg00017.html (6,838 bytes)

6. Re: [Amps] Bird wattmeter (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 09 May 2007 08:38:39 -0500
While we're on the subject of Wattmeters, Has anyone here had an opportunity to compare the Array Solutions PowerMaster with N8LP's LP-100 Digital Vector Wattmeter? If so, an objective comparison of
/archives//html/Amps/2007-05/msg00088.html (7,675 bytes)

7. [Amps] WTB: Henry 3K Premier or ?? (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Tue, 18 Sep 2007 05:42:43 -0500
I'm interested in buying one of the Henry console amplifiers which use the 3CX1200A7. These models include the 3K Premier, the 3K Classic X Mk. II, and the 5K Classic. Please contact me if you have o
/archives//html/Amps/2007-09/msg00185.html (6,318 bytes)

8. Re: [Amps] How many other Hunter Bandit 2000C owners out there? (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Mon, 12 Nov 2007 11:51:04 -0600
I built one of these from a kit for the W9BGX Northwestern University club station in about 1966. In the remaining time I was there, we only had a couple of problems with it. The output started drop
/archives//html/Amps/2007-11/msg00169.html (8,627 bytes)

9. [Amps] Tank circuit arcing (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 09 Jan 2008 12:01:47 -0600
I recently bought a used Henry 3K Premier. Something arcs when I tune it up only on 12M and only with the HV switch in the SSB position. I removed the cover to take a look and found that the rotary i
/archives//html/Amps/2008-01/msg00085.html (8,220 bytes)

10. Re: [Amps] Tank circuit arcing (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Fri, 11 Jan 2008 06:38:29 -0600
Why not? Actually, the Henry 3K is designed for continuous coverage. In the "10M" position, it will tune from 24-30 MHz. I'm not running out of inductance on 12M, as the rotary inductor is set for m
/archives//html/Amps/2008-01/msg00094.html (7,944 bytes)

11. Re: [Amps] Alpha 77dx (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Sun, 08 Jun 2008 11:55:46 -0500
Last year I was watching eBay for a Henry amplifier. I encountered several scam offerings of the Henry 5K, so this does go on. In addition, after purchasing a 3CX1200A7 tube on eBay, I received a co
/archives//html/Amps/2008-06/msg00065.html (8,833 bytes)

12. Re: [Amps] Bill Orr comment (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 23 Jul 2008 15:52:02 -0500
Bill Orr's writings go back a long time. Does the article in question say what class of operation he is talking about? Up until the mid to late '50s, Class C designs were common, and they are higher
/archives//html/Amps/2008-07/msg00218.html (8,532 bytes)

13. Re: [Amps] older 3k (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 17 Nov 2010 21:33:58 -0600
Years ago I experienced similar problems with a Hunter Bandit 2000, which used a pair of 3-400Zs. One of the tubes appeared to go bad but was fixed by re-soldering the filament pins. Sometime later,
/archives//html/Amps/2010-11/msg00328.html (7,988 bytes)

14. Re: [Amps] Help identifying tubes (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Mon, 29 Nov 2010 17:02:40 -0600
Try holding the tubes in front of your mouth and exhaling on them. The resulting fogging of the glass may make the original markings temporarily visible again. That's an old trick I learned years ago
/archives//html/Amps/2010-11/msg00545.html (8,010 bytes)

15. [Amps] Henry 3K Premier 12 meter arcing problem (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Fri, 28 Oct 2011 11:31:03 -0500
I'm having a serious problem with arcing in the tank circuit of the Henry 3K Premier which I bought about three years ago. This problem occurs only on 12 meters, and it is getting worse. It used to o
/archives//html/Amps/2011-10/msg00081.html (9,023 bytes)

16. [Amps] Henry 3K Premier 12 meter arcing problem (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Sat, 29 Oct 2011 06:11:59 -0500
I'm having a serious problem with arcing in the tank circuit of the Henry 3K Premier which I bought about three years ago. This problem occurs only on 12 meters, and it is getting worse. It used to o
/archives//html/Amps/2011-10/msg00082.html (8,826 bytes)

17. Re: [Amps] Anti-Corona Paint (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Wed, 28 Dec 2011 16:51:24 -0600
I have an old bottle of Red-X TV Corona Dope manufactured by GC Electronics in Rockford, IL. Unfortunately, it's many years old and is mostly dried up. I looked at the company website at http://www.g
/archives//html/Amps/2011-12/msg00250.html (8,244 bytes)

18. Re: [Amps] Hunter 2000c (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Sat, 09 Jun 2012 15:21:10 -0500
When I was in college, we had a Hunter Bandit 2000C at the W9BGX club station. It was a kit and I built it. Check the solder connections where the ends of the filament choke connect to the terminal l
/archives//html/Amps/2012-06/msg00049.html (8,357 bytes)

19. Re: [Amps] Changes to the 3CX1200 tube (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Mon, 30 Jul 2012 09:14:34 -0500
Not only that, apparently none of the tube rebuilders will rebuild a bad one. I know Econco was rebuilding them at one time, because I have a picture of a 3CX1200Z7 which has their stamp on it, but
/archives//html/Amps/2012-07/msg00409.html (7,057 bytes)

20. Re: [Amps] Sad News for Eimac Users (score: 1)
Author: John Becker <johnb3030@comcast.net>
Date: Fri, 21 Sep 2012 11:50:32 -0500
Things cannot be well for the company right now, with the economy stale and tubes being in less demand. They supply some very unique bottles to markets that depend on them. I made an inquiry to Eimac
/archives//html/Amps/2012-09/msg00270.html (10,163 bytes)

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