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Total 406 documents matching your query.

281. Re: [Amps] 160m/80m homebrew amp (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Thu, 26 Oct 2017 00:41:41 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-10/msg00164.html (6,343 bytes)

282. Re: [Amps] SB220 plate meter question (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Tue, 7 Nov 2017 10:55:41 +0200
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-11/msg00039.html (6,389 bytes)

283. Re: [Amps] Henry 2K-3 amp restore (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 13 Nov 2017 06:36:06 +0200
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-11/msg00133.html (6,393 bytes)

284. Re: [Amps] Glitch resistor + fuse? (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Mon, 13 Nov 2017 19:06:32 +0200
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-11/msg00142.html (7,585 bytes)

285. Re: [Amps] Glitch resistor + fuse? (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Wed, 15 Nov 2017 05:27:11 +0200
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-11/msg00151.html (7,698 bytes)

286. Re: [Amps] Henry 2K-3 amp restore (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Tue, 21 Nov 2017 18:38:23 +0200
Make sure the contacts on the t/r relay are clean and that it is pulling in properly. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ On 21 Nov 2017 18:32, Bob Darlington w
/archives//html/Amps/2017-11/msg00176.html (9,944 bytes)

287. [Amps] Stuck setscrews (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Fri, 8 Dec 2017 13:27:15 +0200
I have an older Palstar AT-Auto tuner. It uses stepper motors to turn a rotary inductor and a capacitor. It works very well in my station (or it did). The motors are connected to the coil and capacit
/archives//html/Amps/2017-12/msg00056.html (7,346 bytes)

288. Re: [Amps] Stuck setscrews (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Fri, 8 Dec 2017 15:43:43 +0200
I'm sure those would do the job. More than the job, unfortunately. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ On 8 Dec 2017 14:50, Alek Petkovic wrote: Angle grinder o
/archives//html/Amps/2017-12/msg00061.html (8,691 bytes)

289. [Amps] Stuck setscrews unstuck! (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Sat, 9 Dec 2017 09:35:39 +0200
Re removing set (grub) screws stuck with Loctite: Several Amps members suggested heat, so I put the tip of a small soldering iron into the sockets of the Allen screws for about 15 seconds, and when I
/archives//html/Amps/2017-12/msg00069.html (6,649 bytes)

290. Re: [Amps] titan 425 dimming, dropping power (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Tue, 12 Dec 2017 11:14:46 +0200
Does it have a soft start relay in the PS primary circuit? Maybe the relay isnt pulling in. Also make sure the connections in the AC line plug are OK. Vic 4X6GP ______________________________________
/archives//html/Amps/2017-12/msg00086.html (7,746 bytes)

291. Re: [Amps] Defining CCS (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Sun, 31 Dec 2017 22:20:09 +0200
There's more than just plate dissipation. The power supply needs to be capable of running continuously at full output without overheating. Tank coils also have to dissipate heat. 73, Victor, 4X6GP Re
/archives//html/Amps/2017-12/msg00205.html (9,174 bytes)

292. Re: [Amps] Plate Choke Issue (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Wed, 3 Jan 2018 21:28:58 +0200
Did you check for resonance with a GDO with the choke shorted? You need to do this with it in place. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ On 3 Jan 2018 17:28, AJ
/archives//html/Amps/2018-01/msg00033.html (10,224 bytes)

293. Re: [Amps] Shipping a heavy HV Transformer (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Sat, 20 Jan 2018 16:11:01 +0200
I once received a 50 lb. transformer from Peter Dahl wrapped in many layers of small-size bubble wrap. The whole thing was placed in a large cardboard box about 3 times the size of the transformer. T
/archives//html/Amps/2018-01/msg00107.html (8,218 bytes)

294. Re: [Amps] Sad State of the Hobby (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Sat, 20 Jan 2018 16:14:54 +0200
Not so. <http://www.elecraft.com/KPA1500/KPA1500.htm> 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ On 20 Jan 2018 09:30, Jim Thomson wrote: commercially making them anyw
/archives//html/Amps/2018-01/msg00110.html (7,763 bytes)

295. Re: [Amps] Sad State of the Hobby (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Sun, 21 Jan 2018 06:46:35 +0200
They had AC power problems. The failure didn't have anything to do with the fact that it was a solid-state amp. Many DXpeditions have used KPA500s and other solid state amps successfully. 73, Victor,
/archives//html/Amps/2018-01/msg00119.html (9,678 bytes)

296. Re: [Amps] Series C in amp output (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Tue, 13 Feb 2018 07:41:49 +0200
I have always thought those safety chokes arent worth much. The 2.5 mh chokes often used in that spot are rated at 300 or even 125 ma, and I suspect they would open long before the plate supply fuses
/archives//html/Amps/2018-02/msg00014.html (9,553 bytes)

297. Re: [Amps] Rick Measures AG6K (SK) (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Sat, 17 Mar 2018 21:10:55 +0200
Im sorry to hear this. Rich was knowledgeable about many things, although admittedly he had some silly ideas on some particular subjects. Personally I found him friendly, and quite helpful on several
/archives//html/Amps/2018-03/msg00049.html (8,907 bytes)

298. Re: [Amps] Alpha 77D anode choke swap? (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Tue, 10 Apr 2018 19:09:48 +0300
It SHOULD work without issues. But it wouldnt hurt to check for series resonances with the choke in place (check with GDO, power off, choke temporarily shorted). Vic 4X6GP ___________________________
/archives//html/Amps/2018-04/msg00014.html (8,286 bytes)

299. Re: [Amps] Alpha 77D anode choke swap? (score: 1)
Author: Vic Rosenthal <k2vco.vic@gmail.com>
Date: Wed, 11 Apr 2018 08:28:21 +0300
For what its worth, Ive found with several amps that did not have a 30 meter position on the bandswitch, 30 worked best with the bandswitch set to 20 meters. I have used this choke successfully on 30
/archives//html/Amps/2018-04/msg00022.html (11,401 bytes)

300. Re: [Amps] Alpha 77D anode choke swap? (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Wed, 2 May 2018 17:09:32 +0300
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2018-05/msg00003.html (6,654 bytes)

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