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1. [Amps] Power Supply Improvements (score: 1): Author: "Mike Lucas" <w5chr@bellsouth.net>; Date: Sun, 9 Sep 2007 13:52:20 -0500; A very clean single 4-1000A amp and power supply followed me home from a recent tower removal project. The amp and P/S were built by a friend of W4GD, and used until a couple of years ago. The supply; /archives//html/Amps/2007-09/msg00107.html (6,667 bytes)
2. [Amps] P/S upgrade (score: 1): Author: "Mike Lucas" <w5chr@bellsouth.net>; Date: Mon, 16 Mar 2009 18:59:18 -0500; I have an OLD homebrew supply for a single 4-1000, that needs some re-work before using it with an amp.Transformer weighs 103lbs, with a 28 lb choke input in the neg lead. Rectifiers are 3 amp indivi; /archives//html/Amps/2009-03/msg00453.html (6,862 bytes)
3. [Amps] Grounded grid matching circuit (score: 1): Author: Mike Lucas <W5CHR@Bellsouth.net>; Date: Fri, 16 Apr 2010 18:56:01 -0500; In the March 1978 HAM RADIO magazine, Ulrich Rohde wrote about an elliptic filter covering the amateur bands from 1.8 to 30MHz, suitable for an input circuit to an amp needing a 50 ohm to 100 ohm ste; /archives//html/Amps/2010-04/msg00492.html (6,853 bytes)
4. Re: [Amps] Grounded grid matching circuit (score: 1): Author: Mike Lucas <W5CHR@Bellsouth.net>; Date: Fri, 16 Apr 2010 20:19:55 -0500; Carl: Thanks for the info--I feel somewhat better about my software usage skills, but disappointed that my ham radio hero DJ2LR has dashed my hopes of a broadband input for my project amp. Mike W5CHR; /archives//html/Amps/2010-04/msg00495.html (7,482 bytes)
5. Re: [Amps] Grounded grid matching circuit (score: 1): Author: Mike Lucas <W5CHR@Bellsouth.net>; Date: Fri, 16 Apr 2010 20:36:02 -0500; Dick: I have a large room full of projects started in the mid 70's, and still not completed. Rohde was the inspiration of more than half of them. Thanks to Al Gore's internet, Google and hi-speed DSL; /archives//html/Amps/2010-04/msg00497.html (7,797 bytes)
6. Re: [Amps] Grounded grid matching circuit (score: 1): Author: Mike Lucas <W5CHR@Bellsouth.net>; Date: Fri, 16 Apr 2010 21:09:38 -0500; Colin: Drive power is 100 watts to a 4PR1000 with 5000v on the anode. I (think) it will make near legal limit output with a 200 ohm resistor and a 4:1 unun. Will such an input screw up the IMD withou; /archives//html/Amps/2010-04/msg00498.html (8,338 bytes)
7. Re: [Amps] transformer (score: 1): Author: Mike Lucas <W5CHR@Bellsouth.net>; Date: Mon, 04 Jul 2011 21:07:40 -0500; If you are ANYWHERE near Memphis, please let me know so that I can be ready for the brownout when you keydown. 73 de Mike W5CHR _______________________________________________ Amps mailing list Amps; /archives//html/Amps/2011-07/msg00049.html (7,005 bytes)
8. [Amps] Filter Chokes (score: 1): Author: Mike Lucas <w5chr@bellsouth.net>; Date: Fri, 09 Mar 2012 12:55:44 -0600; I'm trying to characterize two filter chokes from 4x1 amps, other than big and heavy. Can someone suggest a procedure, literature, or visual methods to identify what I have? Am I safe in assuming tha; /archives//html/Amps/2012-03/msg00085.html (8,181 bytes)
9. Re: [Amps] Filter Chokes (score: 1): Author: Mike Lucas <w5chr@bellsouth.net>; Date: Fri, 09 Mar 2012 17:00:50 -0600; A big thanks to all on the list for several suggestions as to testing the filter chokes on hand. I'm in the slow process of moving to another state and retiring, so tests will take some time. I'll po; /archives//html/Amps/2012-03/msg00097.html (8,877 bytes)
10. Re: [Amps] Solid State Relays Again (score: 1): Author: Mike Lucas <w5chr@bellsouth.net>; Date: Mon, 10 Feb 2014 15:34:02 -0600; naught times naught equals naught ......... or has that changed with the new math ? Don W4DNR Naught times naught is double-naught!-- Jethro Bodine.... Just wait 'till you start doing Gazintas. Mike; /archives//html/Amps/2014-02/msg00083.html (8,725 bytes)
11. [Amps] High Voltage Plate Transformer Question (score: 1): Author: Mike Lucas <w5chr@bellsouth.net>; Date: Mon, 12 Jun 2017 14:17:44 -0500; I have a transformer removed some 20 plus years ago from a pole-pig. Since I've been the owner, it has served well as a heavy-duty door stop. Weight is about 90 lbs. There is a 5-position switch on t; /archives//html/Amps/2017-06/msg00190.html (9,422 bytes)

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