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References: [ +from:n1wr@chesapeake.net: 20 ]

Total 20 documents matching your query.

1. [Amps] Drake L4B connector (score: 1)
Author: n1wr@chesapeake.net (Wayne Rogers)
Date: Thu, 28 Feb 2002 01:17:37 +0000
Have a simple request. I am looking for a part number and/or source for a replacement plug that mates with the vox relay jack on the back of the L4B. Thanks, Wayne N1WR Lusby, MD
/archives//html/Amps/2002-02/msg00310.html (6,220 bytes)

2. [AMPS] RE: found connectors but now : cable ? (score: 1)
Author: n1wr@chesapeake.net (Wayne Rogers)
Date: Wed, 30 Jan 2002 01:55:57 +0000
The answer to this is to use type HN connectors (HN = high voltage N) and only HN for the high voltage connection between power supply and amp. That way you can go ahead and use you RG-213 and not ha
/archives//html/Amps/2002-01/msg00292.html (7,708 bytes)

3. [Amps] Cardwell Capacitors (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 28 Feb 2008 19:27:33 -0500
I have a couple Cardwell variable capacitors - type XG-110-XD. They have 3/16 in spacing, and I'm guessing 110 pf max. capacitance. Anyone know what the minimum capacitance is? I tried to find a refe
/archives//html/Amps/2008-02/msg00213.html (6,499 bytes)

4. Re: [Amps] XCVR Output vs. Amplifier Input Impedence (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Sun, 9 Mar 2008 13:37:58 -0400
This discussion about the output impedence of a solid state transceiver has some bearing on my current problem. I am beginning to build a 4-1000A G-G linear (I know - old technology, but thems the pa
/archives//html/Amps/2008-03/msg00097.html (7,472 bytes)

5. [Amps] re 50 ohm resistor (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 21 Aug 2008 10:48:46 -0400
Felipe: MFJ sells parts. See: http://www.mfjenterprises.com/Product.php?productid=119-1500 Not cheap, but exactly what you want. Wayne N1WR _______________________________________________ Amps mailin
/archives//html/Amps/2008-08/msg00117.html (6,406 bytes)

6. [Amps] Amplifier Input Circuit Consultation (score: 1)
Author: n1wr@chesapeake.net
Date: Thu, 23 Oct 2008 13:03:17 -0400 (EDT)
I continue to work on the design/construction of my 4-1000 amplifier. I'm working on the input network details. The 4-1000 has a generally accepted input impedence of 100 ohms. So I am planning on us
/archives//html/Amps/2008-10/msg00095.html (7,485 bytes)

7. Re: [Amps] HT41 (score: 1)
Author: n1wr@chesapeake.net
Date: Tue, 4 Nov 2008 12:16:32 -0500 (EST)
Carl: The HT-41 can be modified to take two 572B's. A few minor changes - biggest is the tube sockets need to be changed. Wayne N1WR _______________________________________________ Amps mailing list
/archives//html/Amps/2008-11/msg00026.html (6,481 bytes)

8. Re: [Amps] Autotuners in Amps (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 12 Feb 2009 11:33:01 -0500
I've been watching the mail on this and I'm surprised that no-one has stated the fact that the input impedance of these amplifiers is not constant. Does anyone really believe that the input impedance
/archives//html/Amps/2009-02/msg00360.html (7,423 bytes)

9. Re: [Amps] step start /triacs/Line Side Regulator (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Fri, 12 Feb 2010 08:35:54 -0500
David: I tried this circuit on a large power supply. The problem with it is that it turns the primary on - off on a regular basis. lots of bang - bang - banging of the transformer. I removed it from
/archives//html/Amps/2010-02/msg00338.html (8,243 bytes)

10. Re: [Amps] Labeling panels (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 19 Aug 2010 14:37:15 -0400
Vic: Simple solution is to use decals. Testors No. 9201 contains six sheets 5.5" x 8.5" that you can print on with an ink jet printer. You also need Testor's Sealer/Bonder P/N 9200 spray, but I have
/archives//html/Amps/2010-08/msg00325.html (9,193 bytes)

11. [Amps] Cracked Chimney (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Fri, 24 Dec 2010 09:27:11 -0500
I have managed to put a crack in my chimney (SK-506 for 4-1000 etc). The crack is such that I am afraid that even the pressure from the metal clips will cause a large piece of the glass to break off.
/archives//html/Amps/2010-12/msg00335.html (7,461 bytes)

12. [Amps] 4-1000 Bias (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Tue, 1 Mar 2011 12:38:36 -0500
I have a 4-1000 g-g homebrew amp. It was designed 4000 volts on the plate. My new supply is 5500 volts under load. With the grid at ground potential and at 4000 volts on the plate the no signal grid
/archives//html/Amps/2011-03/msg00013.html (7,259 bytes)

13. Re: [Amps] Amps Digest, Vol 99, Issue 6 (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Fri, 4 Mar 2011 16:08:14 -0500
Thanks Bill, Carl and others. Yes - I obviously have something wrong here. I have a couple suggestions on how to trace down the problem - and will start hunting next week after the contest this weeke
/archives//html/Amps/2011-03/msg00049.html (7,363 bytes)

14. [Amps] L4B Plate choke (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Mon, 2 Jan 2012 18:59:47 -0500
I just opened up my L4B to do some minor work on it. I noticed that the plate choke looks like it has overheated - discolored brown around the middle of it. Wonder if anyone has experienced this - co
/archives//html/Amps/2012-01/msg00033.html (7,042 bytes)

15. Re: [Amps] L4B Plate choke (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 5 Jan 2012 23:16:32 -0500
Carl: I pretty much reached the same conclusion. I ordered the Ameritron choke from MFJ. I understand that it is a bit too long physically and needs to be shortened a bit (the form - not the coils).
/archives//html/Amps/2012-01/msg00080.html (9,237 bytes)

16. [Amps] Pi Network Coil Design (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 19 Jan 2012 10:30:21 -0500
I'm working on the design of the Pi network for a 4-1000A linear (160, 80, 40 and 20 M only), plate resistance is 5500 ohms, The inductance for 160M is 39.2 uH. I'm planning on using a ceramic former
/archives//html/Amps/2012-01/msg00155.html (7,343 bytes)

17. Re: [Amps] Pi Network Coil Design (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 19 Jan 2012 22:27:17 -0500
No, not a toroid. It's a ceramic coil form, overall dimensions 6.5" long, 3.5" in diameter. Wayne, N1WR _______________________________________________ Amps mailing list Amps@contesting.com http://li
/archives//html/Amps/2012-01/msg00159.html (8,845 bytes)

18. [Amps] Clear Coat on Pi-Net Coil (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Sat, 11 Feb 2012 11:55:34 -0500
Still working on my 4-1000 linear. I have the pi-net coil wound with #10 enameled wire on a 3.5" diameter ceramic form. Right now I have the wire separated (between turns) with a .1" nylon line, but
/archives//html/Amps/2012-02/msg00097.html (6,806 bytes)

19. Re: [Amps] Amps Digest, Vol 110, Issue 30 (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Thu, 16 Feb 2012 13:57:13 -0500
This was as problem in one of the early 1870's handbooks. In one of their amplifier projects they showed a three wire 220 circuit, with no neutral. and they had a blower connected across one leg to g
/archives//html/Amps/2012-02/msg00208.html (8,367 bytes)

20. Re: [Amps] L4B Plate choke - Follow Up (score: 1)
Author: "Wayne Rogers" <n1wr@chesapeake.net>
Date: Mon, 20 Feb 2012 10:29:43 -0500
Well, here's the results. I purchased the Ameritron choke from MFJ. Installing it into the L4B was not a problem. It had to be shortened by 1/2" - which was easily accomplished by CAREFULLY cutting o
/archives//html/Amps/2012-02/msg00228.html (7,332 bytes)

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