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221. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Mon Mar 10 10:38:43 2003; ** If Mr. Rauch agrees to send one of his suppressors, yes. What instrument do you have access to for measuring impedance, admittance and parallel-equivalent resistance? The measurements need to be; /archives//html/Amps/2003-03/msg00424.html (10,126 bytes)
222. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Mon Mar 10 07:08:29 2003; ** ? Say what ? ** The brass strip is in series with the anode and the Tune C. The low (series) Z of the brass strip transforms into a high Rp. A low series R has a high parallel R equivalent. A hig; /archives//html/Amps/2003-03/msg00419.html (12,798 bytes)
223. [Amps] 3-500zg tubes (score: 127): Author: 2 at vc.net (rlm); Date: Mon Mar 10 07:08:16 2003; The good news is that the Chinese govamint don't waste no body parts that could benefit sick folks, so maybe there's people alive today who might otherwise have died. The Chinese government also exe; /archives//html/Amps/2003-03/msg00418.html (7,740 bytes)
224. [Amps] RE: Parasitics (score: 127): Author: 2 at vc.net (rlm); Date: Mon Mar 10 07:07:58 2003; It's not that anyone is smart, it's just that nobody apparently thought about Why a R/L parastic suppressor reduces VHF gain and makes HF amplifiers less likely to do the squirrel thing. - I didn't r; /archives//html/Amps/2003-03/msg00417.html (7,431 bytes)
225. [Amps] Transformer and Inductor theory (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 21:31:32 2003; Correctamundo. Some ignitions use the capacitor discharge technique. The cap is charged to c. 400v by a DC to DC switcher supply. Discharge is via an SCR. have phun, Eric - R. L. Measures, a.k.a. Ri; /archives//html/Amps/2003-03/msg00409.html (7,424 bytes)
226. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 21:23:47 2003; ** "Smoke" was a pun, right? ** true, but the exerpt fom the QST aticle [Figure 18] makes it pretty clear the we are talking about "finding impedance by for solving for admittance". ** what shunting; /archives//html/Amps/2003-03/msg00408.html (14,956 bytes)
227. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 19:11:22 2003; ** the VHF suppressor is in series with the anode. Since VHF-gain =s transconductance x VHF-Rp, converting the series R of the suppressor to the parallel equivalent, Rp, is useful. ** True, but high; /archives//html/Amps/2003-03/msg00404.html (9,311 bytes)
228. [Amps] SB-220 cap arc and the local broadcast station (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 19:11:14 2003; ** any port in a storm. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00403.html (7,200 bytes)
229. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 19:11:04 2003; ** Good point, however, for instance, the 3/4-wave resonance of a 1/4-wave line for a 432MHz amplifier is pretty far up there. I have never built a 144, 432, or 1296MHz amplifier that proved to capr; /archives//html/Amps/2003-03/msg00402.html (11,272 bytes)
230. [Amps] Tuned Input (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 19:10:56 2003; ** Yes, provided the minimum is under 1.2 to 1. If it's not, the Q of the tuned input needs to be pumped up, ** Tune for max RF out with whatever drive level produces the rated max anode current. Ma; /archives//html/Amps/2003-03/msg00401.html (7,186 bytes)
231. [Amps] Nichrome magic (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 15:31:02 2003; The seemingly lifelong excursion on the wide river in Egypt continues. So Tom, do you remember asking me if I was recording your (Paul Pagel-recommended) telephone call? Do you remember telephoning; /archives//html/Amps/2003-03/msg00393.html (7,680 bytes)
232. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 15:30:55 2003; ** Because you left something out? original - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00392.html (10,533 bytes)
233. [Amps] A WAR STORY! (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 15:30:50 2003; ** Excellent. ** ... assuming that AC circuit analysis does not apply to VHF suppressors and that resistance-wire has less R as frequency increases. cheers, Colin - R. L. Measures, a.k.a. Rich..., 8; /archives//html/Amps/2003-03/msg00391.html (9,857 bytes)
234. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 15:30:36 2003; ** HF amplifiers invariably have two resonant circuits connected to the anode. VHF amplifiers have one. ** So the g-g internal feedback-C from the anode to the cathode (or grid in grounded-screen te; /archives//html/Amps/2003-03/msg00390.html (9,542 bytes)
235. [Amps] Ameritron AL-80B - Alternative? (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 15:30:28 2003; Let the reader decide. apologist - n. A person who argues in defense or justification of something, such as a doctrine, a policy, or an institution. [American Heritage Dictionary ?1994] Apologists d; /archives//html/Amps/2003-03/msg00389.html (9,093 bytes)
236. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 14:18:54 2003; ** expect a letter from my copyright attorney. ** One can always do the step-start mod when replacing the 922's welded-ON/OFF switch. ** probably for the reason it took Ford 9-years to fix the solid; /archives//html/Amps/2003-03/msg00384.html (11,407 bytes)
237. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 14:02:24 2003; OK, Dale. The sticky wicket is that, providing a load is connected, maximal bandswitch potential occurs at resonance. Resonance only occurs when the bandswitch is on the same band that the transceiv; /archives//html/Amps/2003-03/msg00383.html (10,006 bytes)
238. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 11:44:42 2003; I was curious about the no horizontal operation caveat from Eimac. Being a curious guy, I operated a 3-500Z on the bench horizontally for a month 24/7 to see how much sag occurred. I measured sag by; /archives//html/Amps/2003-03/msg00371.html (19,703 bytes)
239. [Amps] AL-80B questions (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 11:44:31 2003; According to some, arc-welding cables can't move when striking an arc unless aided and abetted by voodoo. I guess we got some o' that voodoo stuff down right here in Somis' down at the welding shop,; /archives//html/Amps/2003-03/msg00370.html (10,993 bytes)
240. [Amps] Ameritron AL-80B - Alternative? (score: 127): Author: 2 at vc.net (rlm); Date: Sun Mar 9 11:08:09 2003; Eimac differs. Tom also says that nothing can be learned by tube autopsy. Eimac does tube autopsies. The farther out an apologist gets out on a limb, the more he/she seems to write. - R. L. Measures; /archives//html/Amps/2003-03/msg00368.html (7,884 bytes)

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