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21. Re: [Amps] Transformer in GLA 1000 B : OK for 2xGI 7 ? (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 5 Oct 2004 13:04:53 -0400; Will Matney wrote: "The transformer in mention, I think is rated at ICAS which would be about 1/2 the needed current for 100% duty cycle" I don't want to take this out of context but does this mean t; /archives//html/Amps/2004-10/msg00050.html (8,364 bytes)
22. Re: [Amps] pa-pics wanted (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Sat, 30 Oct 2004 13:11:37 -0400; Stef, OK, here is my contribution: http://kenw2dtc.home.comcast.net/w2dtc-3cx3000f7-page.htm 73, Ken W2DTC -- hi , who wants to send me pics from any kind of pa (commercial -homebrew...) i would like; /archives//html/Amps/2004-10/msg00519.html (7,199 bytes)
23. Re: [Amps] [A bit OT] PEP reading for a Bird (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Wed, 3 Nov 2004 12:06:47 -0500; "To accurately read PEP, one needs to use that which is used to calibrate PEP wattmeters -- i. e., a calibrated oscilloscope, a HV RF probe, and a 50-ohm termination." To add to that: I use a Bird 43; /archives//html/Amps/2004-11/msg00035.html (8,114 bytes)
24. [Amps] swap 4CX3000A for a 3CX3000F7 (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Mon, 15 Nov 2004 16:23:54 -0500; I have an good Eimac 4CX3000A pull that I would like to swap for a good 3CX3000F7 pull. If interested, send me a private email. Thanks, Ken W2DTC kenw2dtc@comcast.net ________________________________; /archives//html/Amps/2004-11/msg00225.html (6,344 bytes)
25. Re: [Amps] Help on Aerovox capacitor (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Thu, 16 Dec 2004 13:12:57 -0500; I agree with Dennis on his assessment of the cap with this added thought. Since the internals are wound like a roll of paper towels in oil, it is possible that the outside layer is closer to the phys; /archives//html/Amps/2004-12/msg00220.html (9,261 bytes)
26. Re: [Amps] 3-500Z uses [TSPA] (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 1 Feb 2005 14:15:44 -0500; K5PRO wrote: "My coworkers and I maintain some five 'sockets' for 3-400Z at work, each used as an inverter/driver for a 4CX3000A which screen modulates a pair of 4CW250,000B which are plate modulator; /archives//html/Amps/2005-02/msg00012.html (8,125 bytes)
27. [Amps] Re: more on 3-500Z uses [TSPA] (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 1 Feb 2005 15:05:41 -0500; Thank you for the explanation. I jumped to conclusions thinking 'audio modulation' and was puzzled by tube line up. That's a serious rig John. Again thanks. 73, Ken W2DTC -- -- Original Message -- Fr; /archives//html/Amps/2005-02/msg00016.html (10,291 bytes)
28. [Amps] 10 DB increase (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Fri, 4 Feb 2005 04:58:03 -0500; "Many years ago, an old timer (W6SDM) told me that to make a noticable difference on HF SSB, it took +10db." While on the subject of DB. Many times when someone adds 10db to the transmit side, in an; /archives//html/Amps/2005-02/msg00077.html (8,387 bytes)
29. [Amps] 10dB and propagation + HAARP (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Mon, 7 Feb 2005 13:25:24 -0500; W4EF wrote this about HAARP: "The array consists of 180 elements crossed dipole elements each with two 10KW sources (3.6 MW total RF power)."........."tens of thousands of times less than the Sun's n; /archives//html/Amps/2005-02/msg00235.html (9,817 bytes)
30. Re: [Amps] 10dB and propagation (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Mon, 7 Feb 2005 14:14:30 -0500; G4FTC worte: "HAARP was orginally conceived to generate ELF signals - if I recall correctly for communications with submarines while submerged." "and it only requires a relatively small amount of pow; /archives//html/Amps/2005-02/msg00239.html (9,980 bytes)
31. Re: [Amps] Instant-On (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Wed, 23 Feb 2005 23:13:45 -0500; "Not letting a tube amplifier go through a minimum warm-up cycle is like getting in your car on a brisk winter morning and instantly driving off on the interstate." I usually give my AL-1200 a 30 sec; /archives//html/Amps/2005-02/msg00713.html (7,192 bytes)
32. Re: [Amps] Base Up or Down (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Wed, 16 Mar 2005 16:03:05 -0500; That's easy Hal. They would have been instructed to log onto amps@contesting.com where they would enter discussions on microgravity, why they are running tubes instead of solid state, and someone wou; /archives//html/Amps/2005-03/msg00383.html (6,977 bytes)
33. Re: [Amps] peak reading with AM signals tspa (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Mon, 28 Mar 2005 19:00:02 -0500; "I am not an expert on Bird 43 wattmeters..............I was curious as to why it was typically 3X and not 4X as modulation theory would predict, for 100% sinewave modulation" John, Using an audio ge; /archives//html/Amps/2005-03/msg00639.html (7,388 bytes)
34. Re: [Amps] Standby tubes (was: Even more power solid-state amp's) (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Fri, 1 Apr 2005 18:36:51 -0500; "This one is just outside of Cincinnatti. It was something like 500,000 watts if I recall or maybe a little more." Will, Is this the big rig you were speaking about? http://hawkins.pair.com/wlw.shtml; /archives//html/Amps/2005-04/msg00029.html (7,803 bytes)
35. Re: [Amps] NAB report --- TSPA (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Thu, 21 Apr 2005 14:56:52 -0400; Wonder if any US companies showed an interest in DRM? (BTW, nice writeup on NAB) 73, Ken W2DTC _______________________________________________ Amps mailing list Amps@contesting.com http://lists.conte; /archives//html/Amps/2005-04/msg00428.html (7,639 bytes)
36. Re: [Amps] Volt-watt meter (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Fri, 22 Apr 2005 11:32:10 -0400; "I have a Simpson volt-watt meter here I'm thinking about getting calibrated." Perhaps you could get one of your larger variacs and put in a smaller fast blow line fuse, then slowly bring up the volt; /archives//html/Amps/2005-04/msg00443.html (7,775 bytes)
37. [Amps] questions on my tranformer test (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Sun, 12 Jun 2005 14:39:52 -0400; Hi, I'm trying to figure out the current rating of a plate transformer. This is my test setup: http://w2dtc.com/2005-0610-transformer-test-page.htm Questions: 1. Is this a valid way to find the secon; /archives//html/Amps/2005-06/msg00073.html (6,641 bytes)
38. Re: [Amps] TRANSFORMER-TEST-webpage (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Sun, 12 Jun 2005 15:53:03 -0400; "The one feature I see on your iron is that the windings are not potted. This means the unit, as it heats and cools, absorbs moisture from the air around it, said moisture settling in the paper lamin; /archives//html/Amps/2005-06/msg00076.html (7,099 bytes)
39. Re: [Amps] questions on my tranformer test (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Sun, 12 Jun 2005 16:07:20 -0400; Dr, I agree with you on measuring the wire size; however, upon investigation the secondary terminals are fed with , thick flat copper bus which has much more area then the actual secondary wires, so; /archives//html/Amps/2005-06/msg00077.html (10,344 bytes)
40. Re: [Amps] questions on my transformer test (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 14 Jun 2005 01:09:49 -0400; Will, I agree with you on measuring the wire size; however, upon investigation the secondary terminals are fed with , thick flat copper bus which has much more area then the actual secondary wires, s; /archives//html/Amps/2005-06/msg00093.html (11,058 bytes)

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