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261. [Amps] Alpha 86 (score: 127): Author: 2 at vc.net (rlm); Date: Thu Mar 6 07:04:05 2003; It's always the customer's fault. good point - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00245.html (10,554 bytes)
262. [Amps] Alpha 86 (score: 127): Author: 2 at vc.net (rlm); Date: Thu Mar 6 06:25:57 2003; Have you tried Corona with chile verde ? - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00243.html (8,431 bytes)
263. [Amps] Alpha 86 (score: 127): Author: 2 at vc.net (rlm); Date: Thu Mar 6 06:23:49 2003; In Mexico, a Corona dope is a dude or dudette who has no clue as to when to stop drinking it. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00242.html (8,085 bytes)
264. [Amps] Alpha 86 (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 19:29:34 2003; Corona in a amplifier with a 3000V anode supply? tune proving replacement - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00218.html (10,971 bytes)
265. [Amps] Alpha 86 (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 12:43:55 2003; I would measure the resistance of the suppressor resistances when installing the new bandswitch. Alpha uses bandswitches that normally don't arc from the HF voltages present. gud luck, Vic - R. L. M; /archives//html/Amps/2003-03/msg00195.html (8,408 bytes)
266. [Amps] Silver Plated Copper strap (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 12:37:44 2003; Only a problem for those who don't wipe. For operation of an amplifier in the same building with a gas appliance, varnished Cu is better than Ag-plating because it won't form a sulphide from the gas; /archives//html/Amps/2003-03/msg00194.html (7,672 bytes)
267. [Amps] Why hasn't solid state replaced tubes? (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 12:27:45 2003; It is the duty of licensed amateur radio operators to inform others of amateur radio practice that is not good. Riley does this himself - provided he has the time. cheers, Vic - R. L. Measures, a.k.; /archives//html/Amps/2003-03/msg00192.html (9,441 bytes)
268. [Amps] IM Distortion (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 12:27:41 2003; Not unless the anode current indication fluctuates during the test.. One way of doing this would be to pulse the three tones at syllabic rate. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, w; /archives//html/Amps/2003-03/msg00191.html (7,370 bytes)
269. [Amps] Silver Plated Copper strap (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 11:57:51 2003; For <100MHz, Ag-plating is of no value other than to prevent oxidation of the Cu. I polish Cu tank conductors with fine steek wool and coat them with clear urehane varnish. They look ok years later.; /archives//html/Amps/2003-03/msg00188.html (7,116 bytes)
270. [Amps] IM Distortion (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 11:16:47 2003; ** Amen, Tom. The advantage of speech is that there are a plethora of tones and the varying current tests the effect of power supply un-regulation. Two or three-tone tests don't. However, the jury i; /archives//html/Amps/2003-03/msg00179.html (8,027 bytes)
271. [Amps] Why hasn't solid state replaced tubes? (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 07:48:07 2003; Amen, Tom. I had the same experience with a JRD transceiver. When driven by 140w-pep voice-SSB on 40m, my SB-220 (pair of Amperex 3-400Zs} produces 400v-pk into 50-ohms. Using ohm's law, this works; /archives//html/Amps/2003-03/msg00164.html (10,366 bytes)
272. [Amps] Henry 3k classic X MkII (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 07:38:52 2003; One 3cx1200A7 has 0.8pf of feedback C Two of 'em have 1.6pF of feedback C. Are you trying to build an oscillator? - the 3cx1200Z7 has 0.08pF of feedback C. It is a poor choice for building an oscill; /archives//html/Amps/2003-03/msg00163.html (8,505 bytes)
273. [Amps] Why hasn't solid state replaced tubes? (score: 127): Author: 2 at vc.net (rlm); Date: Wed Mar 5 07:30:55 2003; One treatment for rotten IMD is to measure the turkey's IMD and read his IMD report to him whenever he is trying to listen. Putting it on a tape loop helps. Be sure to ID. Under No circumstance use; /archives//html/Amps/2003-03/msg00162.html (14,478 bytes)
274. [Amps] Why hasn't solid state replaced tubes? (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 21:26:45 2003; ** Because some low freq speech IM products fall within the filter passband and their level is such that they are audible. This is quite rare, but I have heard several, - R. L. Measures, a.k.a. Rich; /archives//html/Amps/2003-03/msg00142.html (9,467 bytes)
275. [Amps] Some of us are new to amplifiers (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 21:26:42 2003; ** Any question for which the questioner does not already know the answer is never ever dumb. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00141.html (7,605 bytes)
276. [Amps] 8877s, ETO and the General Electric Contract (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 21:26:39 2003; ** Good ** I filter spam. 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/msg00140.html (21,279 bytes)
277. [Amps] Mistakes (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 21:26:35 2003; In early 1997, the Grate Parasite Debate was not going very well for the Rauchian camp in the uncensored alt.radio-amateur.homebrew Newgroup since they could not silence criticism of their guru, so; /archives//html/Amps/2003-03/msg00139.html (7,973 bytes)
278. [Amps] 8877s, ETO and the General Electric Contract (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 15:17:14 2003; ** No. I said that I suspected that the 8875s had sustained a parasitic oscillation because both parasitic suppressor resistors had changed from 100-ohms to c. 400-ohms so quickly that no external c; /archives//html/Amps/2003-03/msg00125.html (10,485 bytes)
279. [Amps] Mistakes (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 15:17:08 2003; So kvetch to the moderator. This is like going to a boxing match and complaining because people keep hitting each other. I have a library of Rauchian utterances. Would you like some quotes? You were; /archives//html/Amps/2003-03/msg00124.html (8,269 bytes)
280. [Amps] Why hasn't solid state replaced tubes? (score: 127): Author: 2 at vc.net (rlm); Date: Tue Mar 4 15:17:02 2003; I have seen amplifiers which exhibited good IMD performance with the (constant) 2-tone test, but which had 11 db more IMD when (unconstant) voice modulation was used. - R. L. Measures, a.k.a. Rich..; /archives//html/Amps/2003-03/msg00123.html (10,119 bytes)

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