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381. [Amps] Re: [Amps] Bird=ae 43 Manual (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Thu, 28 Mar 2002 05:28:05 -0800; ? Well put Ian. This is why I prefer to measure RF power with a 50-ohm termination and a freshly-calibrated** oscilloscope. [P=E^2/R]. However, since this produces a peak watt value, one must divide; /archives//html/Amps/2002-03/msg00645.html (8,927 bytes)
382. [Amps] Error Correction Regarding Tuned Input Q for G-G Config. (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Thu, 28 Mar 2002 05:35:26 -0800; Below is an e-mail I received this A. M from Rex, K0KP. congrats, Rex -- Hello Richard, Thanks for your website. I refer to it often. Also thanks for the low Q parasitic suppressors, my amplifier has; /archives//html/Amps/2002-03/msg00646.html (7,992 bytes)
383. [Amps] IMD vs. Vcc (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sun, 31 Mar 2002 10:54:08 -0800; I had reports that my TS-440S was not as clean as my old TS-830S, so I decided to try and do something about it. Since most IMD occurs when the transistor is at maximum peak collector current - when; /archives//html/Amps/2002-03/msg00713.html (6,745 bytes)
384. [AMPS] SB-220 parts needed (score: 1): Author: 2@mail.vcnet.com (rich); Date: Fri, 1 Feb 2002 03:38:34 -0800; When a tube grid/fil. shorts in a SB-220, the unfused 5v filament/relay 110v PS transformer usually melts down. To prevent this possibility with the new transformer, convert the cutoff bias method f; /archives//html/Amps/2002-02/msg00004.html (7,556 bytes)
385. [AMPS] TL-922A questions (score: 1): Author: 2@mail.vcnet.com (rich); Date: Fri, 1 Feb 2002 12:37:50 -0800; 3-500Zs have >2 x the voltage and emissive capability of the 811A. They also have less grid-lead-L, so they tend to be less squirrely in g-g service. A 20A, 120V mains circuit works ok and the power; /archives//html/Amps/2002-02/msg00010.html (8,588 bytes)
386. [AMPS] Filamant CT (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Sun, 3 Feb 2002 09:04:56 -0800; - 2, 3 - 5 ? resistors in series would provide a C.T. with less DC g-k bias change due to cathode I x R/2 drop. cheers, Ed - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures; /archives//html/Amps/2002-02/msg00038.html (7,205 bytes)
387. [AMPS] FS:ARRL-002 Hipersil Xfmr (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Sun, 3 Feb 2002 11:45:16 -0800; ? A Dahl 46- pounder is suitable for an amplifier that will supply 8k pep to the feedline in SSB mode. However, it is not ethical to transmit more RF than is needed to communicate. What is the resis; /archives//html/Amps/2002-02/msg00041.html (8,141 bytes)
388. [AMPS] FS:ARRL-002 Hipersil Xfmr (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Sun, 3 Feb 2002 22:00:04 -0800; ? As you may have guessed, I like to discuss unboring topics. Politics, scams, religious cults, psychohistory, whatever. C. 1980, I was getting jammed by various True Believers on the 40m daytime so; /archives//html/Amps/2002-02/msg00045.html (10,026 bytes)
389. [AMPS] FS:ARRL-002 Hipersil Xfmr (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Mon, 4 Feb 2002 07:01:24 -0800; ? it doen't affect R, it prevents the counter EMF from zapping the ohm-meter. resistance I ? Yes - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http:; /archives//html/Amps/2002-02/msg00049.html (7,937 bytes)
390. [AMPS] FS:ARRL-002 Hipersil Xfmr (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Mon, 4 Feb 2002 07:44:03 -0800; Replies to AMPS posts that may be of interest to some members get posted to the group. Request not to do so and I won't. Those who dislike what I write should killfile me a.s.a.p. A clarification: I; /archives//html/Amps/2002-02/msg00051.html (12,353 bytes)
391. [AMPS] Euro Sub For Eimac (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Wed, 6 Feb 2002 08:20:19 -0800; ? Jim -- If you have any 3cx800A7s that are kaput, I would like to purchase them and perform autopsies. tnx - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on; /archives//html/Amps/2002-02/msg00058.html (7,394 bytes)
392. [AMPS] Did you own one? (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Fri, 8 Feb 2002 07:55:50 -0800; ? Known problems: 1. 5.9v on 4.75v.min - 5.25v.max heater. 2. T/R relay hotswitches with modern transceivers. 3. No step-start to prevent eventual spot-welding the ON/OFF sw. contacts. 4. Marginal V; /archives//html/Amps/2002-02/msg00074.html (7,124 bytes)
393. [AMPS] Power out indicator (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Tue, 12 Feb 2002 23:21:05 -0800; ? Such an indicator is not very useful because a g-g amplifier is tuned for max out with max drive using its built in RF relative output meter. Tuners need only a reflectometer to indicate when zero; /archives//html/Amps/2002-02/msg00124.html (9,328 bytes)
394. [AMPS] SB-220 (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Wed, 13 Feb 2002 21:37:12 -0800; ? 200uA / c. 1100? ? Monitoring grid current is of zero value because tune-up has nothing to do with grid current. Tune-up involves tuning for max out with max drive (<145w-pep) using a tuning pulse; /archives//html/Amps/2002-02/msg00133.html (8,333 bytes)
395. [AMPS] SB-220 (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Thu, 14 Feb 2002 09:07:13 -0800; -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com; /archives//html/Amps/2002-02/msg00138.html (7,444 bytes)
396. [AMPS] SB-220 (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Thu, 14 Feb 2002 10:25:30 -0800; ? Yes, and it allows an accurate tuneup with a power supply that won't maintain anode supply V with AØ. cheers, Paul - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measure; /archives//html/Amps/2002-02/msg00139.html (7,447 bytes)
397. [AMPS] Re: Tubes with high transfer capacitance..Hrrrm?? (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Thu, 14 Feb 2002 14:57:36 -0800; These are reversed. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative; /archives//html/Amps/2002-02/msg00141.html (7,245 bytes)
398. [AMPS] SB-220 Meter Movements (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Fri, 15 Feb 2002 06:09:25 -0800; ? A "complete restoration" means removing: 1. the step-start mod (the amplifier will once again have too much inrush current for the on/off switch, which will eventually destroy the switch) 2. lower; /archives//html/Amps/2002-02/msg00149.html (12,209 bytes)
399. [AMPS] High Voltage Toroidal Power Transformers (score: 1): Author: 2@mail.vcnet.com (Rich...); Date: Fri, 15 Feb 2002 07:48:20 -0800; ? The tape-wound Hipersil transformer has a toroidal core. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissi; /archives//html/Amps/2002-02/msg00152.html (7,023 bytes)
400. [AMPS] AL811H on AM (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 15 Feb 2002 16:58:43 -0800; ? Approx. 30 - 35W per 811A or 572B. power is / The same. An audio tone produces a discrete RF frequency in a SSB transmitter. / No. Reducing drive and tuning produces a mis-tune = non-linearity. ur; /archives//html/Amps/2002-02/msg00165.html (9,343 bytes)

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