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301. [AMPS] TL-922 Filament Transformer Protection (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Mon, 14 Jun 1999 13:30:23 -0700
? An intermittent push-push vhf parasite is typically so brief that it causes no external damage to R-sup. Instead, the damage is internal, and, as such, can only be discovered with an ohmmeter. How
/archives//html/Amps/1999-06/msg00441.html (9,965 bytes)

302. [AMPS] TL-922 Filament Transformer Protection (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Tue, 15 Jun 1999 01:24:24 -0700
? such a question appears to be a defensive measure. - cheers, Ian. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submission
/archives//html/Amps/1999-06/msg00448.html (9,375 bytes)

303. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Tue, 15 Jun 1999 03:16:51 -0700
In a typical 4CX1500B Class AB1 amplifier, the grid-bias supply has enough series R to limit grid-diss. to a safe value in the event that the operator fails to adjust the grid bias to a level that a
/archives//html/Amps/1999-06/msg00452.html (11,540 bytes)

304. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Tue, 15 Jun 1999 08:55:17 -0700
? ZSAC can be set quite nicely with E-screen. The primary consideration is to set the dc grid potential so that virtually zero grid current flows with max. drive. ? a sticky wicket when all transcei
/archives//html/Amps/1999-06/msg00455.html (10,370 bytes)

305. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Wed, 16 Jun 1999 04:00:02 -0700
Peter - - ? agreed ? (assuming E-grid is set for virtually zero I-grid with max. drive) the indicator that something is amiss is when E-screen exceeds the max. allowable potential when ZSAC is set to
/archives//html/Amps/1999-06/msg00472.html (9,476 bytes)

306. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Wed, 16 Jun 1999 05:25:06 -0700
Peter - - ? indeed ? yes ? The sticky wicket is a means of thwarting transceiver overshoot. With my method, the extant overshoot is taken into account by firstly setting E-grid so that virtually no g
/archives//html/Amps/1999-06/msg00473.html (10,628 bytes)

307. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Wed, 16 Jun 1999 07:46:04 -0700
? Unless one can tolerate the attn loss during Rx, one still needs a high speed relay at the attn. - later, Peter Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: ht
/archives//html/Amps/1999-06/msg00475.html (8,350 bytes)

308. [AMPS] New World Record for 8877 Replacement (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Wed, 16 Jun 1999 13:14:29 -0700
?? An amplifier owned by Mr. Robert McFadden, WB5UZR has apparently set a new world record for 8877 replacement in one amplifier. Seven (7) replacement 8877s have been installed so far in his MFJ-Ame
/archives//html/Amps/1999-06/msg00480.html (8,476 bytes)

309. [AMPS] New World Record for 8877 Replacement (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 02:29:11 -0700
Lane ? the telephone, c. 11am, Wednesday. The call was from Fred, a friend of Bob's. Fred told me he had a problem with the relay sticking in his AL-1200. ? I did not inspect the AL-1500. nor did I t
/archives//html/Amps/1999-06/msg00490.html (10,183 bytes)

310. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 02:29:14 -0700
? I have not seen a case where advancing the mic. gain reduced the observed level of on the air splatter. ? Presumably, eliminating commas and periods plus shortening the pause between words would h
/archives//html/Amps/1999-06/msg00491.html (9,760 bytes)

311. [AMPS] 3CX800 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 02:34:35 -0700
Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contest
/archives//html/Amps/1999-06/msg00492.html (8,959 bytes)

312. [AMPS] New World Record for 8877 Replacement (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 09:51:37 -0700
? So maybe it's a good idea to use a VHF suppressor in an 8877 at HF? - cheers, Tom. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfa
/archives//html/Amps/1999-06/msg00497.html (9,610 bytes)

313. [AMPS] New World Record for 8877 Replacement (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 13:40:47 -0700
? Did Tom Rauch say that he was leaving? ? It may be hard to get an answer, Jon. During the grate parasitics debate, I asked Tom Rauch at least seven times whether or not the AL-1500 used a VHF para
/archives//html/Amps/1999-06/msg00501.html (9,217 bytes)

314. [AMPS] hipot testing (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 17:00:18 -0700
Is it an open transformer, Steve? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrat
/archives//html/Amps/1999-06/msg00506.html (7,626 bytes)

315. [AMPS] measuring meter shunt resistance (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 17 Jun 1999 23:37:07 -0700
? One way to measure low resistance values is to put 1.000 ampere through the unknown resistance. Measure the potential across the unknown resistance with your Fluke. 1mV=1milli-ohm. - later, Lane R
/archives//html/Amps/1999-06/msg00514.html (8,647 bytes)

316. [AMPS] New World Record for 8877 Replacement (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 18 Jun 1999 00:05:57 -0700
? I found no post to AMPS from Tom Rauch where he stated that he was leaving. ? The last post from Mr. Rauch seems to have been on 6/9/99 @ 3:46 AM It's a shame cause I would like to hear him defend
/archives//html/Amps/1999-06/msg00515.html (8,815 bytes)

317. [AMPS] hipot testing (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 18 Jun 1999 01:22:52 -0700
To: <amps@contesting.com> ? If the slightly-leaky transformer were mine, to drive out moisture, I would bake it in a 180 deg. F oven for a few days, and re-measure the leakage. If the leakage decrea
/archives//html/Amps/1999-06/msg00519.html (8,624 bytes)

318. [AMPS] hipot testing (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sat, 19 Jun 1999 08:02:01 -0700
To: <amps@contesting.com> ? Not using a capable glitch R. in the pos. lead of an anode supply is a standing invitation to grief. Putting a suitable MOV across the primary winding (to absorb potentia
/archives//html/Amps/1999-06/msg00529.html (9,905 bytes)

319. [AMPS] parasites prove it? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sun, 20 Jun 1999 10:44:48 -0700
? When it looked like the parasite controversy was smouldering, I wrote a letter to *QST* Editor Mark Wilson recommending that the ARRL Lab. measure the characteristics of copper-wire suppressors vs
/archives//html/Amps/1999-06/msg00536.html (10,822 bytes)

320. [AMPS] parasitic fantasia (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sun, 20 Jun 1999 10:44:50 -0700
The long-delayed reflection: ? What is "the frequency of the de-Q'ing"? Wes' measurements showed that resistance-wire lowered supp. Q from 10MHz to 200Mhz. ? Surely. Perhaps 1 to 2% loss at 29MHz, wh
/archives//html/Amps/1999-06/msg00537.html (14,164 bytes)

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