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References: [ +from:n4zr@contesting.com: 415 ]

Total 415 documents matching your query.

341. Re: [Amps] Now this here is a real ham's amp! (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 31 Mar 2010 09:34:19 -0400
On the other hand, with all those cavils and hedges in the E-bay writeup, I can't imagine buying it - if either the power transformer or the tubes are bad, you're pretty much sunk. My SB-220 is at le
/archives//html/Amps/2010-03/msg00942.html (11,384 bytes)

342. Re: [Amps] SB220 SICK...RELAY (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 08 Apr 2010 17:35:31 -0400
However, Allen Bond at www.mgs4u.com sells a wide range of vacuum relays and other high power stuff, both new and from surplus for very reasonable prices, and he stands behind his goods 100 percent.
/archives//html/Amps/2010-04/msg00277.html (11,752 bytes)

343. Re: [Amps] HV lytic max V ratings..some notes. (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sun, 11 Apr 2010 11:17:18 -0400
Hmmm ... would this mean that the SB-220 and similar amps of that era should all have blown up by now (since we mostly run them on the SSB setting now? 73, Pete N4ZR The World Contest Station Databas
/archives//html/Amps/2010-04/msg00374.html (9,740 bytes)

344. Re: [Amps] Time to learn to use delete key (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sat, 22 May 2010 05:30:23 -0400
Well, yes, but people insist on not changing the subject line when they take a thread off in an only vaguely related direction. As a result I find myself having to read at least the first sentence of
/archives//html/Amps/2010-05/msg00287.html (10,283 bytes)

345. Re: [Amps] HV dropping (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 03 Jun 2010 15:43:42 -0400
You just need to monitor your line voltage. A few years ago, I discovered my 220 dropping below 200 volts every morning about 7 AM. since this was winter, and low-band season, this was a little tryin
/archives//html/Amps/2010-06/msg00045.html (9,442 bytes)

346. Re: [Amps] Peter Dahl / Harbach SB-220 transformer (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 09 Jun 2010 06:24:42 -0400
Strikes me as the only good way to get more out of an SB-220 - avoids stress on the bandswitch and tune cap due to higher voltage. I wonder if anyone has ever combined this with directly-grounded gri
/archives//html/Amps/2010-06/msg00094.html (11,256 bytes)

347. [Amps] 3-500 filament meltdowns was: Re: Centurion plate current issue (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 10 Jun 2010 16:36:23 -0400
My SB-220 has had this problem for some time. I resoldered the pins on at least 3 3-500Zs using silver solder from AG6K, and then finally swapped two of the grid clips on each socket for the filament
/archives//html/Amps/2010-06/msg00115.html (13,542 bytes)

348. Re: [Amps] New High Efficiency 3-500Z plate caps (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 01 Jul 2010 10:52:29 -0400
Somewhere in my youth, I recall reading that plate caps like that make very little difference, because the ability of that thin plate electrode to transfer heat from the plate itself is the limiting
/archives//html/Amps/2010-07/msg00008.html (10,480 bytes)

349. Re: [Amps] Automotive Relays (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sun, 08 Aug 2010 06:07:21 -0400
I did a survey about 15 years ago on CQ-Contest (then the only reflector available). IIRC, there were essentially no complaints about the Ameritron RCS-8 or the TopTen remote relay box. I used two To
/archives//html/Amps/2010-08/msg00081.html (25,186 bytes)

350. Re: [Amps] Automotive Relays (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sun, 08 Aug 2010 13:05:14 -0400
Joe's right, of course. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogsp
/archives//html/Amps/2010-08/msg00091.html (30,257 bytes)

351. Re: [Amps] Automotive Relays,bad eng. (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Mon, 09 Aug 2010 10:01:42 -0400
Per the RCS-10 manual, you can put a shorted PL-259 in the Antenna 1 jack, and when you power down the control box, the line to the shack is grounded. Since I only have 6 antennas, this is ideal, but
/archives//html/Amps/2010-08/msg00114.html (13,822 bytes)

352. Re: [Amps] Why no images allowed? (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Fri, 13 Aug 2010 14:42:07 -0400
If I recall correctly, .jpg files are an executable file type, and could therefore harbor viruses. I'm not suggesting malice on the part of someone on this reflector, rather an unwitting relay, or ev
/archives//html/Amps/2010-08/msg00192.html (8,773 bytes)

353. Re: [Amps] New YC=156A (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Mon, 06 Sep 2010 06:39:34 -0400
Anyone had experience in ham use with their Pro-Tek brand Chinese tubes? 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http:
/archives//html/Amps/2010-09/msg00027.html (7,401 bytes)

354. Re: [Amps] Fw: Fan for SB220 (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sat, 18 Dec 2010 13:33:01 -0500
Just one minor quibble - the first two inches of the top rear portion of my SB-220's RF cage is not open, presumably to make sure that the air from the fan at least starts out in the right direction.
/archives//html/Amps/2010-12/msg00202.html (8,352 bytes)

355. Re: [Amps] GS35B Needed (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 29 Dec 2010 17:24:49 -0500
Now that's weird - qro-stuff.com says they have them, but when you click on the tube(s), it takes you to qro-parts.com, which says it doesn't have stock. What gives? 73, Pete N4ZR The World Contest S
/archives//html/Amps/2010-12/msg00405.html (9,151 bytes)

356. [Amps] Tube Amps as Antenna Tuners (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 26 Jan 2011 17:05:00 -0500
I'm really spoiled by my SB-220 -- I can use my 80m antennas that are cut for the CW end all the way up to 3.9 MHz at least (with indicated SWR over 3:1) just by tuning for maximum out. Same on 40. I
/archives//html/Amps/2011-01/msg00331.html (7,884 bytes)

357. Re: [Amps] New Alpha 8410 photos (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Sat, 05 Mar 2011 10:53:49 -0500
That blower is an interesting design, Damon - drawing across wide opening inside the amplifier. How is the blower noise? 73, Pete N4ZR The World Contest Station Database, updated daily at www.contest
/archives//html/Amps/2011-03/msg00050.html (8,406 bytes)

358. Re: [Amps] SB-220 amp help (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 06 Apr 2011 08:43:38 -0400
My SB-220 has been an absolute joy since I bought it a decade ago, at which point it was already about 25 years old, but this message raised a question. In CW contest service, I have always used the
/archives//html/Amps/2011-04/msg00223.html (9,243 bytes)

359. Re: [Amps] Which hearhkit amp would you choose? (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 13 Apr 2011 08:56:57 -0400
What sort of thing, Carl? Retro-fittable to the SB-220? 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.n
/archives//html/Amps/2011-04/msg00366.html (10,256 bytes)

360. Re: [Amps] Top vs bottom posting was: Watch out for a scam by... (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 16 Jun 2011 14:15:16 -0400
Well, you pays yer money (not) .... but it seems to me a case can be made for either. Mobile users certainly refer top posting because their small screens make bottom posting a real pain. Even on a P
/archives//html/Amps/2011-06/msg00181.html (9,065 bytes)

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