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1. Re: [Amps] QRO Parts (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 24 Nov 2009 11:31:19 -0500; "Now the question i asked was where to get information regarding the plate impedance at 3.8KV. Im sure there must be a chart/graph to figure this out. Mike KC7NOA" For a stand-alone PI and PI-EL netw; /archives//html/Amps/2009-11/msg00261.html (8,255 bytes)
2. Re: [Amps] Repeats (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Sat, 7 Nov 2009 11:02:12 -0500; Bill: I use OE and find appropriate editing simple! Copy a sentence, move it to the top, add text and signature, delete all below then send. - JimT _______________________________________________ Amp; /archives//html/Amps/2009-11/msg00103.html (7,440 bytes)
3. Re: [Amps] Checking Plate Choke resonance (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Tue, 13 Oct 2009 12:42:25 -0400; Gents: About this RF choke resonance thng . . . Isn't there some rule about the choke being open-circuited (no connections to it) and/or shorted (piece of wire across it) when you check for resonance; /archives//html/Amps/2009-10/msg00196.html (8,835 bytes)
4. Re: [Amps] How high can I go with this amp? (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Sat, 10 Oct 2009 11:01:22 -0400; Gents: and To do it right, go here: http://tonnesoftware.com/piel.html The program available there will hold your hand in designing a PI or PI-EL network. You will see all of the volts across and amp; /archives//html/Amps/2009-10/msg00165.html (7,896 bytes)
5. Re: [Amps] PEP Reading Wattmeter (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 5 Oct 2009 16:52:27 -0400; Regarding this power measurement thing, I remember using the calorimeter method while I was at Continental Electronics. All the rigs of 100 kW and above were measured that way. I agree with the gener; /archives//html/Amps/2009-10/msg00109.html (8,427 bytes)
6. Re: [Amps] Sunspots gone? (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Wed, 23 Sep 2009 17:22:08 -0400; Bob: Coming in quite clearly in eastern Tennessee - Jim W4ENE _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-09/msg00273.html (7,134 bytes)
7. Re: [Amps] RF deck plate tests (simulating HV?) (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Thu, 10 Sep 2009 19:06:56 -0400; Bill, that information is exact! But you stopped short of actually answering the question. I think you meant to also add on . . . - Jim W4ENE _______________________________________________ Amps mail; /archives//html/Amps/2009-09/msg00146.html (7,856 bytes)
8. Re: [Amps] Unsubscription et all (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 24 Aug 2009 18:03:40 -0400; To the children: - Jim W4ENE _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-08/msg00465.html (7,434 bytes)
9. Re: [Amps] unsubscribe me please (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 24 Aug 2009 14:39:23 -0400; I see we have an surprisingly large number of children on the Amps list. - Jim W4ENE _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/; /archives//html/Amps/2009-08/msg00454.html (8,776 bytes)
10. Re: [Amps] SGC-Mini Lini (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 10 Aug 2009 14:35:39 -0400; Bill WA4LAV et al: Your writeup on the builtin problem with the MiniLini is right on! To add some detail, I understand that the problem was supposedly minimized by using a 250 kHz switching frequency; /archives//html/Amps/2009-08/msg00241.html (8,070 bytes)
11. Re: [Amps] Simpson 260 question (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 3 Aug 2009 17:09:38 -0400; It would be interesting to know both how many "260"s are still out there, and what percentage of them are at least operational. Folks don't build stuff like they used to! If my only problem with a 50; /archives//html/Amps/2009-08/msg00066.html (8,482 bytes)
12. Re: [Amps] Simpson 260 question (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Mon, 3 Aug 2009 16:34:50 -0400; Val: That link to www.Simpson260.com was just what I needed to find out what batteries are needed in my circa 1961 260! So from a kind of "lurker", many thanks! - Jim W4ENE __________________________; /archives//html/Amps/2009-08/msg00064.html (7,390 bytes)
13. Re: [Amps] spray painting metal (score: 1): Author: "Jim Tonne" <tonne@comcast.net>; Date: Fri, 31 Jul 2009 18:12:59 -0400; I retired from a major broadcast transmitter equipment manufacurer in Dallas, Texas. While there it was nice to take a small "G job" to the paint guy. Ask him to add it to the next load of Collins g; /archives//html/Amps/2009-07/msg00448.html (8,642 bytes)
14. Re: [Amps] European meterscale style: name? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Sun, 24 May 2009 19:57:11 -0400; Gary: Thanks for your kind words and feedback! The "Quadrant" style should see light of day within a few days. The only remaining bridge to cross is the positioning of the individual scale labels. Ne; /archives//html/Amps/2009-05/msg00183.html (7,142 bytes)
15. [Amps] European meterscale style: name? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Sun, 24 May 2009 18:04:37 -0400; Gents: I am upgrading the meterscale drawing program "Meter" and would like to know the commonly-used name for the meter style which has the bearing in the lower-right corner. Is this "DIN"? "Quadran; /archives//html/Amps/2009-05/msg00181.html (6,888 bytes)
16. Re: [Amps] multiple supplies in series (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Sun, 12 Apr 2009 19:29:54 -0400; John Lyles wrote in part: Actually they don't all operate at 70 kHz. The end result is as you describe but each individual switch operates at 70 / 48 kHz. This allows the use of switches that have a; /archives//html/Amps/2009-04/msg00144.html (7,565 bytes)
17. Re: [Amps] Power supply question (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Sun, 12 Apr 2009 13:59:25 -0400; Alex wrote in part: What a beautiful candidate for a pulse-width modulator for AM or Kahn-method SSB! That is precisely what the 500 kW shortwave transmitters by Continental do. 48 separate 700 volt; /archives//html/Amps/2009-04/msg00142.html (7,709 bytes)
18. [Amps] Fw: "Y" tubes - the real scoop (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Mon, 6 Apr 2009 16:00:24 -0400; Gents: I made a comment several days ago that I had been told decades ago while I was at Continental that Tom Yingst was behind the "Y" series of tubes from Eimac. It turns out that I was being fed a; /archives//html/Amps/2009-04/msg00069.html (8,032 bytes)
19. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Thu, 2 Apr 2009 13:33:22 -0400; John: I think I was indeed misled. JPhred Riley indicated just a bit ago that Tom didn't have a hand in *all* of the Y tubes. And I agree: someone ask him at NAB how he fitted in with the Y tubes. -; /archives//html/Amps/2009-04/msg00033.html (7,674 bytes)
20. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Thu, 2 Apr 2009 09:44:10 -0400; John Lyles wrote in part: That's what I was told while I was at Continental. The year was probaby 1986 or 1987. He was (is) apparently a true tube guru. - JimT _______________________________________; /archives//html/Amps/2009-04/msg00027.html (6,995 bytes)

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