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81. Re: [Amps] Power factor and choke vs resonant-choke input supplies (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Fri, 11 May 2007 13:21:12 -0400; This resonant-choke discussion is crying for someone to do a Spice analysis so we can see the various waveforms. If someone will give me a schematic with relevant values I'll volunteer to give it a s; /archives//html/Amps/2007-05/msg00121.html (9,136 bytes)
82. Re: [Amps] resonant filter tspa (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 15 May 2007 11:19:57 -0400; Tom/Angel/Peter: I went ahead and fired up my LTspice and entered a schematic so I could see for myself what kinds of stress we might see on a capacitor placed in parallel with a filter choke. I used; /archives//html/Amps/2007-05/msg00135.html (9,595 bytes)
83. Re: [Amps] Filter software (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 29 May 2007 10:05:55 -0400; Tom: A nice full-fledged lumped-element design and analysis program can be seen here: http://tonnesoftware.com/elsie.html For those who need a design and analysis program but are less familiar with t; /archives//html/Amps/2007-05/msg00242.html (7,381 bytes)
84. Re: [Amps] Filter software (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 29 May 2007 14:37:21 -0400; Tom and Larry: Elsie writes a ready-to-run netlist so you can pop it into LTspice (freebie) and get all the volts and amps etc. - JimT _______________________________________________ Amps mailing lis; /archives//html/Amps/2007-05/msg00248.html (7,054 bytes)
85. Re: [Amps] Slightly OT.... (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Thu, 28 Jun 2007 10:30:29 -0400; But might they be useful for Class C rigs? - JimT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-06/msg00170.html (7,379 bytes)
86. Re: [Amps] Gassy Tubes/Technology Museum looking for artifacts (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Thu, 26 Jul 2007 18:41:37 -0400; Regarding the Museum site: It is indeed fascinating and not the usual "here is the manual for a T-17" kind of thing. But what I see happening here is that the number of people who had first-hand expe; /archives//html/Amps/2007-07/msg00454.html (8,811 bytes)
87. [Amps] Made in China - Japan again? (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Wed, 29 Aug 2007 15:14:10 -0400; I seem to recall that Japan went through this same kind of thing, when "Made in Japan" meant junk. But eventually they wised up and now optics, as an example, are very nice. Automobiles seem to be we; /archives//html/Amps/2007-08/msg00237.html (6,559 bytes)
88. Re: [Amps] crossmodulation in PA ? (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Wed, 5 Sep 2007 09:05:53 -0400; Peter: As I was reading your note about intermodulation (or crossmodulation, the term you used) I thought to myself that a simple highpass filter would be needed. Then I saw this: So I see you have c; /archives//html/Amps/2007-09/msg00025.html (7,507 bytes)
89. Re: [Amps] NCL 2000 Information/Hardware (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Wed, 12 Sep 2007 09:17:03 -0400; Pat Bartholow wrote (in part): A nice program is here: http://tonnesoftware.com/meter.html - Jim WB6BLD _______________________________________________ Amps mailing list Amps@contesting.com http://li; /archives//html/Amps/2007-09/msg00118.html (7,090 bytes)
90. Re: [Amps] HELP-SB-200 meter (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 18 Sep 2007 10:47:48 -0400; Bob wrote (in part): Lot easier to use a program written to do the desired task: http://tonnesoftware.com/meter.html - Jim WB6BLD _______________________________________________ Amps mailing list Amp; /archives//html/Amps/2007-09/msg00190.html (6,863 bytes)
91. Re: [Amps] HELP-SB-200 meter (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 18 Sep 2007 11:50:36 -0400; Fascinating suggestion! Would take some work, effort, cooperation, willingness for folks to put in some time. I would be happy to post for free download any such submissions. - Jim Tonne Tonne Softwa; /archives//html/Amps/2007-09/msg00194.html (7,681 bytes)
92. Re: [Amps] New SB-200 owner (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Thu, 27 Sep 2007 09:32:01 -0400; SPACE CADETS - VERSION 2 If you didn't hear W2OY, you missed a one-of-a-kind. Actually, he said, "CQ CQ CQ. No kids, no lids, no school bus riders or space cadets. No kings, no queens, no jacks. Thi; /archives//html/Amps/2007-09/msg00390.html (9,531 bytes)
93. [Amps] No lids, no kids, no . . . (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Thu, 27 Sep 2007 09:41:13 -0400; Gents: I asked a co-worker if he had "the rest of the mantra" and got the reply attached below. - Jim WB6BLD == W2OY is calling CQ No lids, no kids, no space cadets, no phonetic fanatics Class A Oper; /archives//html/Amps/2007-09/msg00391.html (8,687 bytes)
94. Re: [Amps] Low Pass Filter (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Fri, 28 Sep 2007 08:29:53 -0400; Harry et al: It is not only a substantial filter, but because of its technical soundness and the ability to make it at home, it will be appearing in the 2008 edition of the ARRL Handbook. - Jim Tonne; /archives//html/Amps/2007-09/msg00456.html (8,627 bytes)
95. Re: [Amps] 8877 Grid Trip timing (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 2 Oct 2007 11:33:23 -0400; Tom wrote (in part): Excellent! And in the high power shortwave transmitter world those transmitters use crowbars and trip even faster than that. Those big tubes are pricey and even a millisecond gri; /archives//html/Amps/2007-10/msg00019.html (7,212 bytes)
96. Re: [Amps] 8877 Grid Trip timing (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 2 Oct 2007 15:20:08 -0400; Karl-Arne wrote in part: That brought back a memory of my first exposure to crowbars (also using iggies). It was at Continental and it was a very long time ago. I had never heard of crowbars and they; /archives//html/Amps/2007-10/msg00022.html (8,737 bytes)
97. Re: [Amps] Testing 8874s (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Fri, 2 Nov 2007 17:08:46 -0400; I contacted a fellow who has first-hand experience in high power hi-potting but who is not on this list. I sent him the letter inquiring about - basically - "how to." He is an engineer at Continental; /archives//html/Amps/2007-11/msg00030.html (10,639 bytes)
98. [Amps] Hi-potting (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Sun, 4 Nov 2007 15:24:25 -0500; There was a recent question from Barrie, W7ALW, about hi-potting. I asked engineer friend Paul Lynas at Continental Electronics about that and posted his reply. Here is an additional response from Pa; /archives//html/Amps/2007-11/msg00056.html (6,860 bytes)
99. Re: [Amps] SB-200 and SB-220 meters (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 6 Nov 2007 12:29:07 -0500; Lou wrote in part: and Count me in on the scale upgrade information too! I have a Johnson Ranger meter I would dearly like to put a new (non-faded) retro scale on. - Jim WB6BLD ______________________; /archives//html/Amps/2007-11/msg00085.html (7,215 bytes)
100. Re: [Amps] Over running modulation /AF transformers (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Sun, 11 Nov 2007 08:16:29 -0500; Carl: A caution on running a transformer beyond its original design. After "processing" the audio response in the modulator must be flat flat flat and if the iron has poor response as a result of you; /archives//html/Amps/2007-11/msg00144.html (10,705 bytes)

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