Mail Archive Search: <+from:2 at vc.net>

Results:

References: [ +from:2 (Too many documents hit. Ignored) ] [ at (Too many documents hit. Ignored) ] [ vc.net: 413 ]

Total 413 documents matching your query.

381. Fwd: [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 4 11:27:50 2003; The evidence speaks for itself. Eimac has not wavered from the conclusion that an "oscillation condition" causes gold evaporation from the grid of an 8877. I still wonder why Eimac's Reid Brandon to; /archives//html/Amps/2003-02/msg00069.html (16,918 bytes)
382. [Amps] Fwd: Voodoo "EMF' forces from grid current pulses (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 4 11:27:44 2003; Out of sight, out of mind. - Sand, the last defense of ostriches. Who said this current was DC ? The 42A-rms of RF related only to your assertion about vaporizing a grid. It is not DC. What did I sa; /archives//html/Amps/2003-02/msg00068.html (8,755 bytes)
383. [Amps] Speaking of filaments...& regulation (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 4 07:12:15 2003; A rheostat in the primary of the filament/heater transformer is a convenient way to adjust filament/heater V. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00059.html (9,236 bytes)
384. [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 4 07:12:13 2003; Have you ever been to a welding shop and observed what happens to arc-welder cables when an arc is struck? I have and I saw the cables jump about on the floor. At its maximum ratings of 4000VDC and; /archives//html/Amps/2003-02/msg00058.html (10,863 bytes)
385. [Amps] AL-80A troubleshooting (score: 127): Author: 2 at vc.net (2); Date: Tue Feb 4 07:12:10 2003; ** Nuclear events produce potential differences of many kV per meter. This can damage electronic circuits that are connected to antennas or to external wiring. One way to protect radios from this is; /archives//html/Amps/2003-02/msg00057.html (8,266 bytes)
386. [Amps] re Amp Returns (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 3 21:14:52 2003; I agree, Rick. Dick Ehrhorn of Alpha once told me that he had 150 Eimac tubes with gold sputtering leakage. When I mentioned this c. 18-months later during a discussion regarding parasites on AMPS,; /archives//html/Amps/2003-02/msg00054.html (6,921 bytes)
387. [Amps] AL-80A troubleshooting (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 3 19:34:29 2003; Yes, electric current is accompanied by an EMF. EMF is proportional to electon flow. A pulse of current produces a pulse of EMF. A nuclear explosion produces a large EMP. cheerz, Dennis O. - R. L. M; /archives//html/Amps/2003-02/msg00046.html (7,711 bytes)
388. [Amps] AL-80A troubleshooting (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 3 12:51:43 2003; This is usually the result of an intermittent parasitic oscillation c. 155MHz. Does the toasted bandswitch look like the AL-80 bandswitches at: http://WWW.VCNET.COM/measures/bandsw.html ? One soluti; /archives//html/Amps/2003-02/msg00039.html (8,520 bytes)
389. [Amps] Alpha mania (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 3 12:51:36 2003; I conducted a telephone survey of computerized Alpha owners and found that roughly 40% of owners had to return theirs for factory repair. Strangely, all tubes that were damaged were replaced gratis -; /archives//html/Amps/2003-02/msg00038.html (8,507 bytes)
390. [Amps] Alpha mania (score: 127): Author: 2 at vc.net (2); Date: Mon Feb 3 12:51:35 2003; Amen to that, Mark. Keeping an autotune Collins 208U10 (8170) amplifier working is nearly a fulltime job. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00037.html (9,577 bytes)
391. [Amps] GU-39B-1Tetrode (score: 127): Author: 2 at vc.net (2); Date: Sun Feb 2 20:53:35 2003; Peter Dahl can build one that is under 4" tall. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00017.html (6,546 bytes)
392. [Amps] Pi networks for Linear Amplifiers (score: 127): Author: 2 at vc.net (2); Date: Sat Feb 1 07:17:23 2003; ** Is a Pi-network resonant at the operating frequency like an L//C "tank"? - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-02/msg00005.html (7,070 bytes)
393. [Amps] HELP: obsolete power zener for a TL-922 (score: 127): Author: 2 at vc.net (2); Date: Wed Jan 29 11:10:15 2003; Thanks, Steve. However the zeners used by amp mfgs reportedly have a high failure rate and none of them have adjustable Vz. A string of fwd biased Si diodes does the job for this application. - R. L; /archives//html/Amps/2003-01/msg00295.html (8,256 bytes)
394. [Amps] HELP: obsolete power zener for a TL-922 (score: 127): Author: 2 at vc.net (2); Date: Wed Jan 29 05:05:46 2003; sound reasoning methinks. Deja vu. Failure of this capacitor is usually hastened by 160m RF leaking into the power supply compartment past the too-tiny HV bypass cap of 2000pF. My guess is the inter; /archives//html/Amps/2003-01/msg00281.html (12,848 bytes)
395. [Amps] Reducing Ameritron AL-800H blower noise? (score: 127): Author: 2 at vc.net (2); Date: Tue Jan 28 19:05:28 2003; RR, Ian ** Unloaded regeneration does occur in a UHF amplifier because the anode is loaded at UHF. In an HF amplifier, this is not the case since the Pi-network output section is a low pass filter.; /archives//html/Amps/2003-01/msg00277.html (16,587 bytes)
396. [Amps] HELP: obsolete power zener for a TL-922 (score: 127): Author: 2 at vc.net (2); Date: Tue Jan 28 19:05:24 2003; 200a for a 1n5400 series rectifier. Not that I've seen so far in any specs. ... - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-01/msg00276.html (7,478 bytes)
397. [Amps] HELP: obsolete power zener for a TL-922 (score: 127): Author: 2 at vc.net (2); Date: Tue Jan 28 18:14:51 2003; A string of Si rectifiers is cheaper and more rugged. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-01/msg00274.html (9,188 bytes)
398. [Amps] Tube Autopsy (score: 127): Author: 2 at vc.net (2); Date: Tue Jan 28 18:11:18 2003; Thanks for the warning, Vern. If I suddenly disappear, I may have been swallowed up. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-01/msg00273.html (8,456 bytes)
399. [Amps] Tube Autopsy (score: 127): Author: 2 at vc.net (2); Date: Tue Jan 28 02:10:58 2003; I save 'em in a tight fitting drawer. Quite a few will fit in the drawer because they occupy little space and weigh next to nothing. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.co; /archives//html/Amps/2003-01/msg00262.html (6,903 bytes)
400. [Amps] Standard Pole Transformers (score: 127): Author: 2 at vc.net (2); Date: Mon Jan 27 19:56:29 2003; not all were. Small ones ordinarily had mineral-oil. PCB oil smells like mothballs. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-01/msg00257.html (8,683 bytes)

Current List: 381 - 400
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]