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References: [ +from:vic@rakefet.com: 418 ]

Total 418 documents matching your query.

221. Re: [Amps] Anybody using the Acom 1000 or 2000 with aMultiband Vertical Antenna? (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 07 Aug 2006 08:46:48 -0700
I do not have an Acom, but any unbalanced antenna tends to be more problematic for RF interference than a dipole, beam, or other balanced antenna. It might help to add a ferrite bead choke (similar t
/archives//html/Amps/2006-08/msg00259.html (7,505 bytes)

222. Re: [Amps] PARASITICS AND fILAMENT SAG (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 28 Aug 2006 08:03:21 -0700
You have apparently not been on this reflector very long, Keith. It's at least the third, possibly fourth, go-around for me! Interestingly, representatives of both camps have been quite helpful to me
/archives//html/Amps/2006-08/msg00736.html (6,917 bytes)

223. Re: [Amps] Problem: Ameritron 811H (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Fri, 01 Sep 2006 08:25:28 -0700
Some tube sockets have these clips over the contacts to keep pressure on them. This is important for filament pins, where poor contact can cause heating, which then results in the solder running out
/archives//html/Amps/2006-09/msg00019.html (6,725 bytes)

224. Re: [Amps] Astrons catching on Fire (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Sat, 02 Sep 2006 10:54:47 -0700
What did you replace the cap with? What parameters are important here? My RS70 (about 4 years old) does have a pot to adjust the voltage. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ________
/archives//html/Amps/2006-09/msg00042.html (8,059 bytes)

225. Re: [Amps] Step Start on a 3KA Amp (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Sun, 17 Sep 2006 20:44:53 -0700
The current drawn during the period that the filter capacitors initially charge is huge and this resistance limits the current during this time. If you are looking at the voltage drop without load, o
/archives//html/Amps/2006-09/msg00208.html (7,735 bytes)

226. Re: [Amps] HV Turn On Delay (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Wed, 27 Sep 2006 08:17:09 -0700
I believe that a similar issue can arise with directly-heated cathodes, although the delay is much shorter. I had a 3-500Z amplifier with a step start arrangement that took about 1 second to apply fu
/archives//html/Amps/2006-09/msg00322.html (8,257 bytes)

227. Re: [Amps] Need Some Experienced Feedback Here... (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Wed, 27 Sep 2006 08:29:58 -0700
I've had this experience with doorknobs in antenna tuners and traps as well as amplifiers. The usual doorknobs with higher values of capacitance (> 100 pf) are N750 temperature coefficient, and they
/archives//html/Amps/2006-09/msg00323.html (8,347 bytes)

228. Re: [Amps] AMPS Administrator (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Sun, 08 Oct 2006 15:26:54 -0700
This is the real clue: Received: from localhost (lb2.30gigs.com [67.15.217.23]) by smtp1.30gigs.com (Postfix) with ESMTP id CA93E29074C Whoever is playing games is doing it with an account at 30gigs.
/archives//html/Amps/2006-10/msg00063.html (6,911 bytes)

229. Re: [Amps] New FCC Amplifier Rule (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Thu, 12 Oct 2006 07:58:44 -0700
As another unintended consequence, the freebanders might just move up above 28 MHz. into the CW band! When will they learn? -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ______________________
/archives//html/Amps/2006-10/msg00086.html (7,277 bytes)

230. Re: [Amps] New FCC Amplifier Rule (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Thu, 12 Oct 2006 08:32:51 -0700
Hey, I'm not being polite to them! Just distinguishing a particular group from the larger class of bootleggers, which include the fishermen and Spanish speakers who are already using our CW band. --
/archives//html/Amps/2006-10/msg00103.html (7,833 bytes)

231. Re: [Amps] Peak Power (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 16 Oct 2006 08:07:40 -0700
That wouldn't help. The procedure they followed way back when they cared about this kind of thing was to make a field strength measurement out in the street. Then they went into the station and had t
/archives//html/Amps/2006-10/msg00186.html (8,092 bytes)

232. Re: [Amps] Astron 70A w/240V primary? (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 23 Oct 2006 14:42:05 -0700
Yes, Astron makes them. I used two with a Henry SS750. I ordered mine from Aventrade <http://aventrade.stores.yahoo.net/> who were quite helpful as well as reasonable in price. -- 73, Vic, K2VCO Fres
/archives//html/Amps/2006-10/msg00255.html (6,722 bytes)

233. [Amps] Elecraft amplifiers (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 11 Dec 2006 08:23:46 -0800
Photos and information about the Elecraft KPA800 and KPA1500 amplifiers: <http://www.n6ie.com/Elecraft.html> -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _____________________________________
/archives//html/Amps/2006-12/msg00063.html (6,438 bytes)

234. Re: [Amps] How best to reduce filament voltage? (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Fri, 02 Feb 2007 08:04:41 -0800
Tom is assuming that everyone knows that the transformer in the SB1000 is used for BOTH plate and filament supply. The resistor would screw up the regulation of the plate voltage. -- 73, Vic, K2VCO F
/archives//html/Amps/2007-02/msg00017.html (9,425 bytes)

235. Re: [Amps] High Power (2500 Watts) Bird RF Dummy Load For Sale (score: 1)
Author: "Vic Rosenthal [TSI]" <vic@rakefet.com>
Date: Sun, 18 Feb 2007 15:40:28 -0800
Nothing, if you only operate CW. But IMD would increase significantly, producing a splatter-y SSB signal and making you unpopular. -- Best Regards, Vic Rosenthal Transparent Software, Inc. -- RAKEFET
/archives//html/Amps/2007-02/msg00285.html (7,863 bytes)

236. [Amps] Elecraft amplifiers (score: 1)
Author: Vic Rosenthal <vic@rakefet.com>
Date: Thu, 01 Mar 2007 12:23:44 -0800
The following was posted on the Elecraft reflector by Eric Swarz, WA6HHQ. -- Hi Folks - Here is the straight story on our KPA 800/1500 amplifier release status. First of all I'd like to apologize for
/archives//html/Amps/2007-03/msg00008.html (13,236 bytes)

237. Re: [Amps] B&W FC-30 Filament Choke: EPILOGUE (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Sun, 04 Mar 2007 07:57:56 -0800
TV horizontal oscillators worked (work?) at about 15 KHz. So who knows how this core would work at 160 meters? -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___________________________________
/archives//html/Amps/2007-03/msg00055.html (8,604 bytes)

238. Re: [Amps] Elecraft amplifiers (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 05 Mar 2007 11:40:42 -0800
Hi Bill, I didn't write the original -- I just quoted Eric Swartz's (Elecraft) message. However I agree with you. I don't know how they do it with SSB. And of course, what do you do if you are Amerit
/archives//html/Amps/2007-03/msg00075.html (7,490 bytes)

239. Re: [Amps] drive power (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Mon, 19 Mar 2007 20:45:33 -0700
It's caused by the ALC loop in the transceiver, not the ALC connection to the amp. When you reduce power with a power level control, what you are doing is setting the point at which the internal ALC
/archives//html/Amps/2007-03/msg00228.html (9,350 bytes)

240. Re: [Amps] AMP Reflector Quality of Information (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Tue, 20 Mar 2007 08:26:33 -0700
I don't know when it began, but I've been here for at least 10 years. I'm mostly an "asker" rather than an "answerer" unless someone asks about something that I happen to have personal knowledge of (
/archives//html/Amps/2007-03/msg00250.html (9,462 bytes)

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