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281. Re: [Amps] SB-220: 1,800 Watts Output (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 01 Dec 2009 16:52:01 -0800
ORIGINAL MESSAGE: REPLY: Actually, it would be 1800 kilowatts. Stand back. :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes
/archives//html/Amps/2009-12/msg00020.html (8,474 bytes)

282. Re: [Amps] Titan II Pedestal (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 01 Dec 2009 20:33:45 -0800
ORIGINAL MESSAGE: REPLY: Quoting from the Svetlana data sheet: "The tube may be mounted in any position." 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contest
/archives//html/Amps/2009-12/msg00026.html (7,669 bytes)

283. Re: [Amps] Ep drop under load (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 02 Dec 2009 13:50:26 -0800
ORIGINAL MESSAGE: REPLY: I Think the best approach is to find out where the voltage drop is coming from - the AC line or the amp's power supply. Measure the voltage change at the AC service entrance
/archives//html/Amps/2009-12/msg00044.html (7,649 bytes)

284. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 02 Dec 2009 19:01:56 -0800
ORIGINAL MESSAGE: REPLY: May I ask a question? When you convert them, do you replace the tune and load caps or do you do the L-netwrok trick? Just curious. 73, Bill W6WRT ____________________________
/archives//html/Amps/2009-12/msg00061.html (8,275 bytes)

285. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 02 Dec 2009 19:03:34 -0800
ORIGINAL MESSAGE: REPLY: Agreed. Every long time DXer will tell you stories where he either made or missed a QSO by one dB. 73, Bill W6WRT _______________________________________________ Amps mailing
/archives//html/Amps/2009-12/msg00062.html (8,427 bytes)

286. Re: [Amps] Svetlana (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 03 Dec 2009 13:12:51 -0800
ORIGINAL MESSAGE: REPLY: I have a "pride" tube too, but I was told it was made in China. Perhaps Pride is an umbrella brand that covers multiple manufacturers? 73, Bill W6WRT ________________________
/archives//html/Amps/2009-12/msg00086.html (7,669 bytes)

287. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 03 Dec 2009 13:21:02 -0800
ORIGINAL MESSAGE: REPLY: First time I've ever heard "tubes should be used as a pair". I have heard the opposite: "If you need more power, don't use two tubes, get a bigger tube". Care to elaborate? 7
/archives//html/Amps/2009-12/msg00088.html (8,754 bytes)

288. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 03 Dec 2009 17:39:36 -0800
ORIGINAL MESSAGE: REPLY: You still haven't elaborated. For a given power output, why are two tubes (properly chosen) better than one (properly chosen)? I see several drawbacks and no advantages. 73,
/archives//html/Amps/2009-12/msg00100.html (8,657 bytes)

289. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 04 Dec 2009 22:58:30 -0800
ORIGINAL MESSAGE: REPLY: Excellent point. It is a well known law of geometry that multiple small objects have larger surface area than a single object of the same total volume. It stands to reason th
/archives//html/Amps/2009-12/msg00123.html (8,289 bytes)

290. Re: [Amps] Conservation of Energy! (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sun, 06 Dec 2009 17:38:28 -0800
ORIGINAL MESSAGE: REPLY: Thanks for posting that, Dave, you beat me to it. Those guys on 40 meters are right. Other things being equal, for a given power output, running anything off 240 volts is mor
/archives//html/Amps/2009-12/msg00182.html (9,112 bytes)

291. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sun, 06 Dec 2009 21:16:07 -0800
ORIGINAL MESSAGE: REPLY: Guys, keep in mind the REAL cooling requirements are based on the temperature of the tube seals. How you get there, i.e. the amount of airflow, can vary all over the place de
/archives//html/Amps/2009-12/msg00184.html (8,388 bytes)

292. Re: [Amps] TITAN II tuning and loading padder capacitors (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sun, 06 Dec 2009 21:54:33 -0800
ORIGINAL MESSAGE: REPLY: A lot of manufacturers use N750 or similar caps and they do drift. If the drift isn't excessive, I'd ignore it. Does the power output actually change or are you seeing just t
/archives//html/Amps/2009-12/msg00186.html (7,931 bytes)

293. Re: [Amps] Conservation of Energy! (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 07 Dec 2009 12:30:01 -0800
ORIGINAL MESSAGE: REPLY: Junk science is everywhere, even occasionally on this reflector. :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2009-12/msg00197.html (8,079 bytes)

294. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 07 Dec 2009 12:42:42 -0800
ORIGINAL MESSAGE: REPLY: I think I have to take issue with this statement. As I see it, the spec for max temp on tube seals is absolute, based on the differential expansion rate of metal vs either ce
/archives//html/Amps/2009-12/msg00198.html (8,798 bytes)

295. Re: [Amps] TITAN II tuning and loading padder capacitors (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 07 Dec 2009 12:45:52 -0800
ORIGINAL MESSAGE: REPLY: Those look like what I used in my homebrew 8877 amp. They do drift some when used as load padders, but not enough to bother me. On 160 meters (worst case band) when properly
/archives//html/Amps/2009-12/msg00199.html (8,797 bytes)

296. Re: [Amps] Conservation of Energy! (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 07 Dec 2009 16:15:52 -0800
ORIGINAL MESSAGE: REPLY: You're right, it isn't double but it is more - a little. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
/archives//html/Amps/2009-12/msg00206.html (8,438 bytes)

297. Re: [Amps] Advice (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 07 Dec 2009 16:48:19 -0800
ORIGINAL MESSAGE: REPLY: Ok, but in this instance it doesn't make any difference. Here's your entire quote: "Some of the cooling specs appear to be highly variable. I suspect that as engineering staf
/archives//html/Amps/2009-12/msg00210.html (9,414 bytes)

298. Re: [Amps] OM power power supply design (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 09 Dec 2009 13:04:42 -0800
ORIGINAL MESSAGE: REPLY: Whenever you put transformer secondaries in series you must be careful not to exceed the insulation rating between a secondary and the iron core, and also between a secondary
/archives//html/Amps/2009-12/msg00248.html (8,461 bytes)

299. Re: [Amps] OM power power supply design (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 09 Dec 2009 18:24:01 -0800
ORIGINAL MESSAGE: REPLY: In this schematic: http://www.sm5cki.se/ompower/images/OM2500%20HV%20Supply.jpg and assuming the bottom most supply's negative is grounded: Imagine a short between the top mo
/archives//html/Amps/2009-12/msg00255.html (8,906 bytes)

300. Re: [Amps] OM power power supply design (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 10 Dec 2009 09:55:03 -0800
ORIGINAL MESSAGE: REPLY: With this design, the bleeder resistor is still necessary to discharge the capacitors. With no bleeder at all, those caps can hold a lethal charge for days. As for the Hypot
/archives//html/Amps/2009-12/msg00266.html (9,733 bytes)

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