- 1. Re: [Amps] Mail Order Operations (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Tue, 02 Sep 2003 08:48:39 -0500
- Harold B. Mandel wrote: Personal experience has taught me to shy away from remote deals. I agree to an extent. But there can be extenuating circumstances. I am right now working on a swap to Australi
- /archives//html/Amps/2003-09/msg00015.html (8,289 bytes)
- 2. [Amps] Microwave Oven Power Supply (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Tue, 02 Sep 2003 22:05:43 -0500
- I recently was at a website that described using parts from a microwave even to a power supply for a Linear. Does anyone know where this site is? I seem to have lost my bookmark to it. ______________
- /archives//html/Amps/2003-09/msg00022.html (6,325 bytes)
- 3. Re: [Amps] HV SAFETY QUESTION (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Sat, 24 Jan 2004 09:30:08 -0600
- On a 19" rack full of batteries (floor to ceiling) that had only a potential across the terminals of 12Vdc, one of the technicians decided to replace a screw in a barrier strip that was missing. Most
- /archives//html/Amps/2004-01/msg00250.html (10,773 bytes)
- 4. [Amps] Serious design stage (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Tue, 20 Apr 2004 13:29:15 -0500
- After collecting parts for most of a year I am in the serious design stage of a 4-1000A linear. The power supply, because of its size is to be external and connected by a cable. In the first design I
- /archives//html/Amps/2004-04/msg00127.html (7,428 bytes)
- 5. Re: [Amps] Serious design stage (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Wed, 21 Apr 2004 09:43:58 -0500
- Two reasons for the 4-1000A: a) I already have it with socket etc. b) Its the coolest looking tube in the world and part of this project, maybe 85%, is to create a linear that will cause ooohs and aa
- /archives//html/Amps/2004-04/msg00133.html (10,297 bytes)
- 6. Re: [Amps] Serious design stage (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Wed, 21 Apr 2004 16:13:16 -0500
- OK, what do you suggest? I would prefer glow bugs, but may have to go to solid state. I was planing on probably only 4500VDC at less than 0.5 amps. I am going to make the transformer in a box with se
- /archives//html/Amps/2004-04/msg00140.html (9,829 bytes)
- 7. [Amps] Dummy load specs needed (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Thu, 22 Apr 2004 12:13:29 -0500
- I just purchased a : LOAD RESISTOR MODEL NO. 639N M.C. JONES ELECTRONICS CO. 50 OHMS 0-3000MCS. I would like to find a derating curve for this load resistor. Does anyone have any suggestions as to wh
- /archives//html/Amps/2004-04/msg00150.html (7,048 bytes)
- 8. [Amps] Looking for tube sockets (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Sun, 02 May 2004 18:35:26 -0500
- I need two sockets for a pair of 872A mercury vapor rectifiers. Anyone have a pair or know of a source or know of a work around. _______________________________________________ Amps mailing list Amps
- /archives//html/Amps/2004-05/msg00024.html (6,937 bytes)
- 9. Re: [Amps] Interesting item on eBay web siteitem# 5700291025:AMPLIFIER 12 TUBER (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Tue, 25 May 2004 13:01:27 -0500
- Used on a Whatmeter Bill Fuqua wrote: I think it is a close relative of Bird Watts. 73 Bill wa4lav At 05:42 PM 5/24/2004 -0400, Mike McCarthy, W1NR wrote: What is a "Gammer Match"? Mike, W1NR --Origi
- /archives//html/Amps/2004-05/msg00234.html (10,710 bytes)
- 10. [Amps] Switching the cathode circuits (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Wed, 02 Jun 2004 09:43:48 -0500
- My amp will have 5 tuned circuits in the cathode. They are in a fully enclosed/shielded box with a switch shaft out one side. The problem is ganging the Plate tank switch to the cathode switch. Mecha
- /archives//html/Amps/2004-06/msg00006.html (6,780 bytes)
- 11. [Amps] How do I determine Class (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Tue, 31 Aug 2004 20:54:36 -0500
- On pages 202-205 of the 1956 "Radio Amateurs Handbook" (ARRL) there is an amplifier described called "Parallel Tetrodes in a High Power Amplifier" How do I, from that description and schematics etc.,
- /archives//html/Amps/2004-08/msg00484.html (6,739 bytes)
- 12. Re: [Amps] How do I determine Class (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Wed, 01 Sep 2004 10:22:05 -0500
- This is EXACTLY the answer I needed. The amp uses a pair of 4-125As and the screens are at "350V - 400V" Plates at "2000V - 3000V" (but no terminating resistor) so I guess that makes it a class AB1 l
- /archives//html/Amps/2004-09/msg00008.html (7,909 bytes)
- 13. Re: [Amps] How do I determine Class (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Thu, 02 Sep 2004 08:04:26 -0500
- Thanks to everyone for the answers on the 4-125 amp. Looks like I will have to redesign the thing before I can use it. _______________________________________________ Amps mailing list Amps@contestin
- /archives//html/Amps/2004-09/msg00038.html (7,709 bytes)
- 14. Re: [Amps] How do I determine Class (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Thu, 02 Sep 2004 10:25:35 -0500
- In this particular case, Yes. The procedure is detailed in the article. R.Measures wrote: Was the amplifier neutralized? Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________
- /archives//html/Amps/2004-09/msg00049.html (8,681 bytes)
- 15. [Amps] Free or almost free chassis (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Sun, 05 Sep 2004 13:37:25 -0500
- Recently I posted about using a computer power switch box with monitor, computer, printer, Aux 1 and Aux 2 switches and line filters etc. to power the S-Line station to save the power switches on the
- /archives//html/Amps/2004-09/msg00078.html (7,529 bytes)
- 16. Re: [Amps] Panasonic tube radio (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Sun, 12 Sep 2004 09:09:40 -0500
- In the late 50s when I started, almost everything was home brew or modified Surplus. If you had commercial gear it was because you were either wealthy or had a wealthy ham friend who was upgrading an
- /archives//html/Amps/2004-09/msg00216.html (9,381 bytes)
- 17. Re: [BULK] - Re: [Amps] Applying HV during Warmup (score: 1)
- Author: Jim Isbell <millenniumfalcon@cableone.net>
- Date: Fri, 17 Sep 2004 14:13:39 -0500
- Maybe this is a GOOD argument for the Mercury Vapor rectifiers in the PS. You have to wait at least a minute, I will use 2 minutes, before applying the HVAC to the rectifiers. This would guarantee th
- /archives//html/Amps/2004-09/msg00310.html (9,646 bytes)
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