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301. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (2); Date: Sun Mar 2 07:39:57 2003; Sounds like a grid-filament short [0v bias] or a bias diode short, or both. If there's anode-I on standby, the tube may have a grid/fil short. If the tube cuts off on standby, the tube is apparently; /archives//html/Amps/2003-03/msg00019.html (11,434 bytes)
302. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (2); Date: Sun Mar 2 07:39:55 2003; A jump to 250mA of ZSAC is not a clue? It takes more movement than this to short a 3-500Z. But Tom Rauch is apparently the only person on this planet who is convinced of this. The recognized amplifi; /archives//html/Amps/2003-03/msg00018.html (11,533 bytes)
303. [Amps] 30l-1 Relay Source (score: 127): Author: 2 at vc.net (2); Date: Sat Mar 1 18:39:48 2003; The orig relay hotswitches with many modern transceivers. To: <amps@contesting.com> - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00015.html (6,850 bytes)
304. [Amps] Stainless Steel (score: 127): Author: 2 at vc.net (2); Date: Sat Mar 1 11:39:58 2003; This is probably why Multronics/Cardwell positions their inductors about one coil-radius above the mounting chassis. cheerz, Eric - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/; /archives//html/Amps/2003-03/msg00009.html (6,506 bytes)
305. [Amps] YC156 bias voltage (score: 127): Author: 2 at vc.net (2); Date: Sat Mar 1 10:21:02 2003; Why not, Norm? To: <amps@contesting.com> - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00007.html (7,742 bytes)
306. [Amps] Stainless (score: 127): Author: 2 at vc.net (2); Date: Sat Mar 1 10:19:03 2003; He's back. "Slightly more"? Compared to Cu-Zn / brass alloys, Fe-Cr-Ni-Si ... /stainless steel alloys have 20 - 40 times as much DC resistance per cubic cm. Good point - R. L. Measures, a.k.a. Rich..; /archives//html/Amps/2003-03/msg00006.html (7,758 bytes)
307. [Amps] Stainless (score: 127): Author: 2 at vc.net (2); Date: Fri Feb 28 12:44:03 2003; ** is lower Q always undesireable? In the Henry 3K-A, the occasional instability at c. 95MHz appears to be supported by the high-Q resonance of the (Al) enclosure. - R. L. Measures, a.k.a. Rich...,; /archives//html/Amps/2003-02/msg00515.html (6,956 bytes)
308. [Amps] Use of stainlees steel in RF environment (score: 127): Author: 2 at vc.net (2); Date: Fri Feb 28 12:29:17 2003; Yes. Stainless-steel typically contains high amounts of Ni and Cr. Thus, it is quite similar to resistance-wire and it can be expected to heat when carrying very much RF current. Because of it's high; /archives//html/Amps/2003-02/msg00514.html (7,515 bytes)
309. [Amps] HV Filter Caps Source (score: 127): Author: 2 at vc.net (2); Date: Fri Feb 28 09:56:06 2003; Digi-key currently carries 85?C 500WVDC and 105?C 450WVDC Matsushita/Panasonic electrolytic caps. I'd replace both. Murphy would say that the failure was most likely to occur During the contest. - R; /archives//html/Amps/2003-02/msg00509.html (7,932 bytes)
310. [Amps] Nichrome (score: 127): Author: 2 at vc.net (2); Date: Thu Feb 27 20:19:09 2003; ** You are welcome, Alek. The teenagers who pack and send the orders deserve the credit for doing the work because I, like Bagwan Rajneesh, am content to ride around in my fleet of Rolls Royces, sip; /archives//html/Amps/2003-02/msg00504.html (11,201 bytes)
311. [Amps] Series Capacitor Strings in HV Supplies (score: 127): Author: 2 at vc.net (2); Date: Thu Feb 27 04:14:02 2003; In days of yore, electrolytic capacitors were less than uniform, so V equalizers made sense. Currently mfg electrolytics are quite uniform, so V-equalizers are probably of little or no value, except; /archives//html/Amps/2003-02/msg00491.html (8,915 bytes)
312. [Amps] Nichrome (score: 127): Author: 2 at vc.net (2); Date: Wed Feb 26 09:27:46 2003; ** Tnx, Dave but congrats are not appropriate because I was not the first to discover that adding R to the anode's VHF resonant circuit in HF amplifiers reduces VHF amplification. In the 1926-editio; /archives//html/Amps/2003-02/msg00476.html (8,392 bytes)
313. [Amps] 4CX800A NOS Tubes.. (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 25 11:04:11 2003; I test unproven tubes with a high-pot before risking them in an amplifier. If you find a tube bedeviled with gas, don't expect it to miraculously getter itself without an exorcism by a duly qualified; /archives//html/Amps/2003-02/msg00455.html (7,443 bytes)
314. [Amps] Source of Dri-transfer Lettering (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 24 01:52:35 2003; Yes, print the needed lettering on laserprinter 8.5" x 11" clear film, cut apart, trim to size, place, and cover with Magic Mending ? tape. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.; /archives//html/Amps/2003-02/msg00433.html (7,750 bytes)
315. [Amps] Interesting Tech Info from W8JI (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 24 01:52:29 2003; ** Indeed. According to Mr. Rauch, the RF resistance of Ni-Cr alloy decreases as frequency decreases. As you know, the RF resistance of Cu, Ag, Au, Al, and the like increases as frequency increases,; /archives//html/Amps/2003-02/msg00432.html (9,474 bytes)
316. [Amps] Interesting Tech Info from W8JI (score: 127): Author: 2 at vc.net (2); Date: Sun Feb 23 19:09:35 2003; ** Mr. Rauch's explanations of intermittent bandswitch arcing is almost as chortlesome as Kenwood's on page 14 of the TL-922 manual. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.c; /archives//html/Amps/2003-02/msg00425.html (7,273 bytes)
317. [Amps] lamps (score: 127): Author: 2 at vc.net (2); Date: Sun Feb 23 18:53:30 2003; Model train shops. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00422.html (6,983 bytes)
318. [Amps] 2sc2879 idle collector current (score: 127): Author: 2 at vc.net (2); Date: Fri Feb 21 05:57:06 2003; The radio uses a temp comp bias circuit. cheerz, Bill - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00403.html (8,203 bytes)
319. [Amps] 3-500Z Pin Desoldering (score: 127): Author: 2 at vc.net (2); Date: Thu Feb 20 10:10:21 2003; The cause of loss of spring tension is excessive heat which causes the spring to lose its temper. In a SB-220, not oiling the fan bearings every couple of years or blocking the exaust air at the top; /archives//html/Amps/2003-02/msg00392.html (8,275 bytes)
320. [Amps] vacuum relay bandswitch (score: 127): Author: 2 at vc.net (2); Date: Thu Feb 20 10:02:00 2003; Depends on the anode supply potential and on the RF circulating current [Q x I-anode]. - Surplus vacuum relays are more reasonably priced than new ones. - R. L. Measures, a.k.a. Rich..., 805.386.3734; /archives//html/Amps/2003-02/msg00391.html (6,710 bytes)

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