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

Total 309 documents matching your query.

261. Re: [Amps] HV measuring (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sun, 16 Aug 2009 13:35:34 -0500
Heathkit MM1 has 5KV scale. Roy, K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-08/msg00333.html (6,084 bytes)

262. Re: [Amps] one mo' SB-220 fix (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sun, 23 Aug 2009 12:21:06 -0500
About, "The subject is the RF choke across the output of the amp. This choke is a safety device, intended to short any DC to ground that should appear on the amp output. How does DC get on the output
/archives//html/Amps/2009-08/msg00415.html (7,292 bytes)

263. Re: [Amps] grid current issue (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 1 Sep 2009 08:39:48 -0500
About: "Your grid shunt resistor is open Hello all... I have been working on restoring an LK-500 NT to operating condition and it has a funny grid current issue. When I switch the meter switch over o
/archives//html/Amps/2009-09/msg00003.html (6,686 bytes)

264. Re: [Amps] LK500-ZB (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Wed, 9 Sep 2009 13:45:32 -0500
About: "...No visible damage to the case, but now when the amp is turned on, but in standby, the plate current reads about 200mA and the grid current is pegged negative. Plate voltage is lower than w
/archives//html/Amps/2009-09/msg00126.html (6,840 bytes)

265. Re: [Amps] LK-500ZB (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 11 Sep 2009 13:03:37 -0500
Concerning, "...Would I just put this to the heater pins? Between ONE of the filament pins and the grid! Across the filament would of course destroy it. My experience with these tubes has been that i
/archives//html/Amps/2009-09/msg00154.html (7,117 bytes)

266. Re: [Amps] B- questions (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 10 Nov 2009 10:21:52 -0600
About, "...Isn't it also true that in a grid driven amplifier, the cathode is connected to ground and the only B- connection to ground is through the plate current meter. This is done so the plate cu
/archives//html/Amps/2009-11/msg00162.html (7,848 bytes)

267. Re: [Amps] B- questions (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 10 Nov 2009 11:15:13 -0600
Continuing, Remember, the meter is not in the cathode to ground, but from filter caps to ground. My mind is blurred. 73, Roy K6XK " Seems to me it has to read BOTH in that configuration." ___________
/archives//html/Amps/2009-11/msg00164.html (8,263 bytes)

268. Re: [Amps] B- questions (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 10 Nov 2009 12:18:58 -0600
Last stated, "Measuring the power supply current you will read the power supply current through all tube/s elements. If there is a screen grid and you wish to measure all tube elements separately, th
/archives//html/Amps/2009-11/msg00165.html (8,035 bytes)

269. Re: [Amps] QRO Parts... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 24 Nov 2009 08:25:02 -0600
Asked, "Now the question i asked was where to get information regarding the plate impedance at 3.8KV. Im sure there must be a chart/graph to figure this out." anode volts divided by (anode amps X 1.8
/archives//html/Amps/2009-11/msg00254.html (6,287 bytes)

270. Re: [Amps] HV wire source (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 3 Dec 2009 09:11:19 -0600
RF Parts sells it in very small quantities and several voltage ratings and gauges. 73, Roy K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.cont
/archives//html/Amps/2009-12/msg00073.html (6,202 bytes)

271. Re: [Amps] Titan II tuning and loading caps... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Wed, 9 Dec 2009 09:53:47 -0600
Keep fixed padders' values at minimum so that air variables are nearly fully meshed. 73, Roy K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co
/archives//html/Amps/2009-12/msg00247.html (6,341 bytes)

272. Re: [Amps] QSK switching time...etc. (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 19 Dec 2009 10:07:24 -0600
About, "...When back biased a diode exhibits a varactor effect: it acts as a capacitance, whose magnitude is inversely proportional with the applied voltage. Even a few Pico farads in series with the
/archives//html/Amps/2009-12/msg00492.html (7,327 bytes)

273. [Amps] Source GU-84B fil xfmr (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 14 Jan 2010 19:35:46 -0600
FYI all, RFP part #F-41X for $9.95 each, is rated 26.5 volts @ 2 amps with 120 VAC on primary. I purchased two and connected primaries in series with secondaries in parallel. My 247 VAC line yields 2
/archives//html/Amps/2010-01/msg00188.html (6,861 bytes)

274. Re: [Amps] GU-84B fil xfmr...TNX (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 15 Jan 2010 08:06:25 -0600
Thanks to all for the many good thoughts. Roy K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2010-01/msg00202.html (6,163 bytes)

275. Re: [Amps] fil choke screws (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sun, 17 Jan 2010 11:57:18 -0600
"I can't get the screws out without fear of breaking the ceramic insulator they go through.....they're stuck in them. Suggestions?????" A few drops of 'Liquid Wrench'? 73 & luck, Roy K6XK ___________
/archives//html/Amps/2010-01/msg00243.html (6,336 bytes)

276. Re: [Amps] external QSK box (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 21 Jan 2010 11:57:07 -0600
"...Anyone know of a good schematic I can get ahold of to make an outboard QSK unit using Vac relays?" February, 2008 QST -- full article. 73, Roy K6XK _______________________________________________
/archives//html/Amps/2010-01/msg00272.html (6,244 bytes)

277. [Amps] LK-500ZA vs ZB (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 30 Jan 2010 10:23:32 -0600
"...I have a LK-500 "B" model and it is running OK. It has no protection circuits in it that I can find other than a fuse. I cannot tell what is difference is between the "A" and "B" versions. I have
/archives//html/Amps/2010-01/msg00511.html (6,475 bytes)

278. [Amps] B+ relays (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sun, 7 Feb 2010 06:37:02 -0600
"...In my amplifiers, I normally protect against a flashover by using the tried-and-true methods: a 25 ohm resistor in the HV lead, in front of the filter capacitor...(etc.)" If you really mean the r
/archives//html/Amps/2010-02/msg00177.html (6,428 bytes)

279. Re: [Amps] ...resistor B4 the filter caps... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 11 Feb 2010 12:00:26 -0600
Gosh, those guys with #2 wiring powering their amps can replace it with the original chinsey 14 gauge after all? 73, Roy K6XK _______________________________________________ Amps mailing list Amps@c
/archives//html/Amps/2010-02/msg00314.html (6,839 bytes)

280. Re: [Amps] QSK-5 insertion loss... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 12 Feb 2010 12:23:47 -0600
"...I'm looking to get some feedback concerning through-line loss of the Ameritron QSK-5. Loss is not specified by Ameritron as a function of frequency and after recently measuring loss through my un
/archives//html/Amps/2010-02/msg00357.html (7,473 bytes)

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