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References: [ +from:royanjoy@ncn.net: 309 ]

Total 309 documents matching your query.

241. Re: [Amps] help with rectifiers, etc. (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 26 Apr 2008 09:54:07 -0500
About... I'll be recapping the filter caps in my hf amp and replacing the original filter caps which are 210 mfd @ 450 wvdc with some that are 530 mfd @ also 450 wvdc(same physical dimensions and als
/archives//html/Amps/2008-04/msg00301.html (6,853 bytes)

242. [Amps] FYI: glitch resistor available (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 15 Aug 2008 11:03:25 -0500
New item at www.allelectronics.com 18 ohm, 225 watt wire-wound, 10.5 inches long, 1.15 inches diameter, catalog #18-225, $5.85 each. 73, Roy K6XK _______________________________________________ Amps
/archives//html/Amps/2008-08/msg00104.html (6,331 bytes)

243. Re: [Amps] Z of SB-200 input (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 9 Sep 2008 10:48:22 -0500
Hi. Trying to caculate the input circuit for Sb200 Wonder what z does two 572b GG cofigration presents[sb200]. Thanks. Aron 4x1fq. Hello Aron, It is about 125 ohms. If you design a pi-network for tha
/archives//html/Amps/2008-09/msg00083.html (6,651 bytes)

244. Re: [Amps] glitch resistors & HV fuses (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 18 Sep 2008 11:33:46 -0500
About glass tubes for homebrew HV fuses, a long ceramic solenoid wire-wound could conceivably have a wire fuse element running through it, and filled with sand like a self contained device. Ends coul
/archives//html/Amps/2008-09/msg00177.html (6,559 bytes)

245. [Amps] amp input circuit... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 23 Oct 2008 12:25:23 -0500
About, "...The 4-1000 has a generally accepted input impedence of 100 ohms. So I am planning on using a 2:1 step up unbalanced to unbalanced balun followed by a parallel tuned circuit, Q of 2-3, for
/archives//html/Amps/2008-10/msg00096.html (7,348 bytes)

246. Re: [Amps] amp input ckt...oops! (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 23 Oct 2008 12:35:06 -0500
Sorry, I read too carelessly. You did mention including a tuned circuit there. Sounds interesting! 73, Roy, K6XK _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2008-10/msg00097.html (6,230 bytes)

247. Re: [Amps] L4B keying (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 13 Nov 2008 13:08:35 -0600
"...Does anyone know the open circuit voltage and current requirement for RY1 (the antenna relay) in the L4B. The schematic does not state this info..." Put a VOM across keyline, set on volts to dete
/archives//html/Amps/2008-11/msg00152.html (6,586 bytes)

248. Re: [Amps] HV wire (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 22 Dec 2008 13:09:36 -0600
"HI all, I am in need of a section of High voltage wire for a 3500 volt power supply I'm rebuilding with new caps and so on. I need 20" to finish it up. Thanks, Cam WA4JKW" Cam, If you need to order
/archives//html/Amps/2008-12/msg00288.html (7,135 bytes)

249. Re: [Amps] plate bypass caps (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 20 Jan 2009 10:49:12 -0600
About, "I have quite a few of the old-style transmitting mica caps (C-D, Sangamo, Solar, etc.). Are these okay to use in a nearly-legal-limit amp for either plate-choke bypassing, or antenna load pad
/archives//html/Amps/2009-01/msg00188.html (8,010 bytes)

250. Re: [Amps] plate choke values (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 5 Feb 2009 09:04:46 -0600
Eddy asked, "Good Morning All, Am I missing something here...? Extensive research here into years & years of ARRL HANDBOOKS, Bill Orr HANDBOOKS, and the internet have shed precious little light in th
/archives//html/Amps/2009-02/msg00109.html (8,858 bytes)

251. [Amps] Source for QSK-1500 fuse lamp!! (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 5 Feb 2009 09:59:43 -0600
Guys, The very hard to find #12 'fuse' lamp used in the DEO-brand, QSK-1500 PIN-diode QSK antenna switcher unit is readily available at: www.1000bulbs.com A box of 10 costs just $12.86. This is good
/archives//html/Amps/2009-02/msg00111.html (7,010 bytes)

252. Re: [Amps] Titan-II blower replacement... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 9 Feb 2009 11:27:35 -0600
I removed mine the same week my new Titan-II arrived, because it was loud and vibrated. If you want it, it's on the house. Maybe you can try to balance it better (I am using a remote blower). 73, Ro
/archives//html/Amps/2009-02/msg00242.html (7,094 bytes)

253. Re: [Amps] Filament transformer question (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 13 Mar 2009 11:31:08 -0500
About, "Hi All. Can someone clear up a point regarding centre tapped filament transformers. I am having one wound for my 4x 813 amp,where I need 10v@20amps. I told the winder, and he wants clearing u
/archives//html/Amps/2009-03/msg00379.html (7,744 bytes)

254. Re: [Amps] Enabling 10-meters for Titan-II amp (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 16 Mar 2009 11:24:50 -0500
Concerning... "We recently replaced the bandswitch in the PJ2T Titan II amp, and now there is no output on 10 meters at all. Everything seems to be wired in agreement with the schematic in the manual
/archives//html/Amps/2009-03/msg00445.html (7,530 bytes)

255. Re: [Amps] "Fixing the MB-V-A tuner..." (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 16 Mar 2009 11:38:44 -0500
Asked... "I'm repairing a MB-V-A tuner which had damage to one of the padding capacitors after KW into a very bad mismatch - small hole pierced in both pieces of the dielectric plastic used in one of
/archives//html/Amps/2009-03/msg00446.html (7,104 bytes)

256. Re: [Amps] silver epoxy... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Wed, 27 May 2009 10:29:13 -0500
About, "I have a 200 pF 10 KV Doorknob that has one end broken off. It looks like Silver Epoxy was used to fix the terminal to the cap. Correct me if I am wrong. Where can I locate a small amount of
/archives//html/Amps/2009-05/msg00206.html (6,982 bytes)

257. Re: [Amps] silver epoxy... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Wed, 27 May 2009 10:44:44 -0500
"The piece that broke off fits into a well about 1/2" deep. No iron I have will reach it." 73, Dick, W1KSZ You can't even reach the end of the metal terminal and let the heat travel down to the solde
/archives//html/Amps/2009-05/msg00207.html (6,586 bytes)

258. Re: [Amps] toroidal transformers (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 25 Jun 2009 10:18:58 -0500
"...I am wondering what difference in efficiency there would be using the Toroidal unit in place of an EI cored transformer voltage doubled such as used in the Heathkit SB220 and other moderately rat
/archives//html/Amps/2009-06/msg00115.html (6,917 bytes)

259. Re: [Amps] 'gettering 572B' (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 25 Jun 2009 10:23:34 -0500
Svetlana states its 572B has getter on the plates. Needs only to be operated under power. 73, Roy K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lis
/archives//html/Amps/2009-06/msg00116.html (6,191 bytes)

260. Re: [Amps] plate bypass capacitor (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 8 Aug 2009 12:46:15 -0500
Concerning, "...At 80 meters, 100uH has a reactance of 2.2 kiloohms. At 1000V RF, that would make 0.45A of RF current going through the choke, and this is the current that the bypass cap has to condu
/archives//html/Amps/2009-08/msg00134.html (8,833 bytes)

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