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261. Re: [Amps] Amps Digest, Vol 170, Issue 27 (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Fri, 17 Feb 2017 21:25:49 +0200
So the spec of 1.8 - 30 MHz does not apply to the balun in the photo? -- Vic 4X6GP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/ma
/archives//html/Amps/2017-02/msg00125.html (10,413 bytes)

262. Re: [Amps] Off topic - help with eHam.net (score: 1)
Author: Vic Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Tue, 28 Feb 2017 07:07:10 +0200
This is the majority opinion, but it is impossible for me to understand, Jim. All the hassle is on the other side. You pack the thing normally. You call UPS or Fedex and get an estimate. You tell the
/archives//html/Amps/2017-02/msg00222.html (9,168 bytes)

263. Re: [Amps] Shipping Costs (score: 1)
Author: Vic Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Wed, 1 Mar 2017 21:07:54 +0200
The USPS is fine inside the US. It even does a good job of getting a package to the airport in a foreign country. But then it is in the hands of the postal service in the destination country. In some
/archives//html/Amps/2017-03/msg00014.html (9,328 bytes)

264. Re: [Amps] rich Richard - tiny antenna (score: 1)
Author: Vic Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 10 Apr 2017 16:55:13 +0300
This is not correct. More like -30 dB for the new K3S and -27 dB for the older K3, according to ARRL lab test. http://www.elecraft.com/K3/K3S%20QST%20Review%20-%20RMDR%20updated.pdf 73, Vic, 4X6GP Re
/archives//html/Amps/2017-04/msg00045.html (7,935 bytes)

265. Re: [Amps] Fwd: Re: FYI Visalia Attendees (score: 1)
Author: Vic Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Fri, 21 Apr 2017 06:55:01 +0300
About time! 73, Vic, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ Busted link. Correction: [1]http://www.elecraft.com/images/visalia1.jpg 73, Ed W0YK References 1. http://www.elecra
/archives//html/Amps/2017-04/msg00148.html (7,859 bytes)

266. [Amps] Jennings RB8A voltage rating? (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 24 Apr 2017 16:34:43 +0300
I have couple of Jennings vacuum relays, 26.5 volt coil SPDT model RB8A-26N927 which I would like to use for a remote antenna tuning application. But I haven't been able to find the voltage/current r
/archives//html/Amps/2017-04/msg00244.html (6,987 bytes)

267. Re: [Amps] Quadra step start (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Thu, 27 Apr 2017 14:00:48 +0300
But if the step-start also controls the filament voltage it should be longer than 100 ms. I have always adjusted mine to be about 1s in order to give the filament time to heat up. I have no idea what
/archives//html/Amps/2017-04/msg00328.html (8,063 bytes)

268. Re: [Amps] W8YX at Univ of Cincy (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Fri, 28 Apr 2017 12:53:04 +0300
Now that really brings back memories. One of the first kits I built as a kid was an Eico VTVM, model 221-K. I learned so much by playing with it. I used to measure skin resistance with it and I belie
/archives//html/Amps/2017-04/msg00369.html (9,227 bytes)

269. Re: [Amps] new amp race (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 22 May 2017 06:15:26 +0300
I think that on the lower bands, much local manmade noise is propagated by the "ground wave" mode. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ I learned: Natural noise
/archives//html/Amps/2017-05/msg00240.html (12,487 bytes)

270. Re: [Amps] new amp race (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Wed, 24 May 2017 06:26:41 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-05/msg00276.html (8,609 bytes)

271. Re: [Amps] Tube amps are not a thing of the past (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 5 Jun 2017 17:06:23 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-06/msg00038.html (7,858 bytes)

272. Re: [Amps] Ten-Tec Titan 10 Meter Input SWR (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Sun, 11 Jun 2017 19:42:50 +0300
So my question is: does the driver care (or even know) the difference between a flat 50 ohm line to an amplifier or one that is running at a 2:1 SWR, but whose length is such that the driver "sees" a
/archives//html/Amps/2017-06/msg00157.html (11,041 bytes)

273. Re: [Amps] About LP100A (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 19 Jun 2017 15:14:41 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-06/msg00232.html (7,556 bytes)

274. Re: [Amps] Solid State Amps-v- Tube Amps (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Thu, 22 Jun 2017 19:41:37 +0300
I don't know why it would affect harmonic suppression, but it does add inductance to the "parasitic tank circuit" that is formed by the plate lead, blocking cap, and pi input capacitor, which could m
/archives//html/Amps/2017-06/msg00260.html (7,948 bytes)

275. Re: [Amps] SB220 step start blows fuses (score: 1)
Author: Victor Rosenthal <k2vco.vic@gmail.com>
Date: Mon, 26 Jun 2017 12:31:15 +0300
I would certainly check the filter caps and diodes. You can try the amp without tubes to establish that the problem is in the power supply. The filament to grid shorts I've seen in 3-500Zs have only
/archives//html/Amps/2017-06/msg00273.html (7,920 bytes)

276. Re: [Amps] peak voltage rating for load cap (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Sat, 19 Aug 2017 17:50:37 +0300
The loading capacitor in a PI-L circuit is at an intermediate impedance point between the plate circuit impedance and 50 ohms. So the first step is to determine what the impedance is at that point, w
/archives//html/Amps/2017-08/msg00023.html (9,050 bytes)

277. Re: [Amps] peak voltage rating for load cap (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Sat, 19 Aug 2017 17:52:24 +0300
All of you guys are forgetting that he said "PI-L", not PI! Vic 4X6GP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf
/archives//html/Amps/2017-08/msg00024.html (9,077 bytes)

278. Re: [Amps] Plate coupling capacitor value (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Fri, 8 Sep 2017 14:44:31 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-09/msg00043.html (7,470 bytes)

279. Re: [Amps] SB200 on 30m (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Fri, 6 Oct 2017 08:47:24 +0300
Just move the 20m tap to about halfway between its original location and the 40m tap. This should have no effect on 80/40 at all. Vic 4X6GP _______________________________________________ Amps mailin
/archives//html/Amps/2017-10/msg00072.html (7,635 bytes)

280. Re: [Amps] SB200 on 30 m (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Fri, 6 Oct 2017 20:11:21 +0300
No, what he is saying is that you are not allowed to transmit more than 200 watts. Nothing to do with what the amp is capable of. Its up to the operator to follow the rules. Also it refers to transmi
/archives//html/Amps/2017-10/msg00086.html (9,173 bytes)

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