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201. SV:SV:SV: [AMPS] Tetrode Amp Help (score: 1): Author: measures@vcnet.com (measures); Date: Tue, 14 Dec 1999 21:49:02 -0700; ? Apples and oranges. We were discussing the importance of regulating screen potential in grid-driven configuration. The 30S-1 is not. ............. - Rich..., 805.386.3734, www.vcnet.com/measures.; /archives//html/Amps/1999-12/msg00167.html (9,517 bytes)
202. [AMPS] Eimac (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 15 Dec 1999 09:02:11 -0700; ? The split-chassis/transverse 6" cooling fan method used in the SB-220 results in lower glass temperatures. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com; /archives//html/Amps/1999-12/msg00177.html (6,933 bytes)
203. SV:SV:SV: [AMPS] Tetrode Amp Help (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 15 Dec 1999 10:02:31 -0700; ? As long are there are people saying that wide variations in screen potential does not cause excessive distortion in SSB grid-driven amplifiers, the issue is not Assuredly not dead. ? And they used; /archives//html/Amps/1999-12/msg00179.html (8,939 bytes)
204. SV: SV:SV:SV: [AMPS] Tetrode Amp Help (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 15 Dec 1999 10:02:32 -0700; Go for it, Hans........ - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/1999-12/msg00180.html (8,401 bytes)
205. SV: SV: SV [AMPS] Tetrode Amp Help (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 15 Dec 1999 18:28:07 -0700; For each 5% change in screen voltage, peak anode current changes by 11.18% cheers, Bob/ - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submiss; /archives//html/Amps/1999-12/msg00186.html (7,662 bytes)
206. [AMPS] SV: G2DAF and super cathode (score: 1): Author: measures@vcnet.com (measures); Date: Thu, 16 Dec 1999 20:04:56 -0700; ? This is the tip of the iceberg. What about the seriously non-linear relationship between screen potential and peak anode current?. If this is the case, there can be no grid/screen amplification. A; /archives//html/Amps/1999-12/msg00199.html (8,516 bytes)
207. [AMPS] G2DAF and super cathode (score: 1): Author: measures@vcnet.com (measures); Date: Thu, 16 Dec 1999 20:04:57 -0700; Yes. In two units the total IMD was c. -22db below peak envelope power. One DAF amplifier used 813s. The other used 4CX250Bs. It was published live on the 40m band whenever people were being interfe; /archives//html/Amps/1999-12/msg00200.html (10,506 bytes)
208. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 06:27:14 -0700; Multiply that by 4x because I measured total feculence of the DAFs with respect to pep. Make no mistake about it, s7 to s9 splatter is a serious matter. cheers - Rich..., 805.386.3734, www.vcnet.com; /archives//html/Amps/1999-12/msg00207.html (8,465 bytes)
209. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 06:27:17 -0700; "one"?. . I said that were two DAF amplifiers which were measured at c. -22db. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amp; /archives//html/Amps/1999-12/msg00208.html (7,967 bytes)
210. SV: [AMPS] G2DAF and super cathode (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 06:27:18 -0700; Quite the opposite. With a two-tone standard test, the DAF config. operates the screen at constant potential, the distortion looks ok, and there is no clue about what will occur during voice modulat; /archives//html/Amps/1999-12/msg00209.html (11,571 bytes)
211. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 10:17:11 -0700; ? It was not "the example". There were two. ? amen. . This is why I conducted the voice tests in question. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/a; /archives//html/Amps/1999-12/msg00212.html (8,518 bytes)
212. [AMPS] RE:[Amps]G2DAF and super cathode (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 10:17:12 -0700; ? Provided we are talking about linear operation, 4-400As and 4-250As benefit as much from a regulated screen as the 8349, the most humungous ceramic-metal ''tetrode with handles''. - Rich..., 805.3; /archives//html/Amps/1999-12/msg00213.html (7,674 bytes)
213. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 11:25:09 -0700; ? The 813 is not linear in grid-driven service. For linear service, G-G is the only game in town. ? indeed. ? You seem to have missed the point that the -22db measurement was relative to Peak Envelo; /archives//html/Amps/1999-12/msg00215.html (9,823 bytes)
214. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 17 Dec 1999 23:50:53 -0700; The 813 is designed for Class C, grid driven service with relatively low screen potential. I have never seen 813 data for grid driven linear service with elevated, regulated screen potential. My gue; /archives//html/Amps/1999-12/msg00219.html (12,317 bytes)
215. [AMPS] 8877 bias (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 09:46:15 -0700; Amen, Alek. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.c; /archives//html/Amps/1999-12/msg00235.html (7,389 bytes)
216. [AMPS] drive derived screen potential (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 09:46:13 -0700; Norm's DAF amplifier was one of the two amplifiers I measured. He eventually converted the amplifier to conventional Class AB1. A conventional screen supply for the 4cx250Bs is hardly large. Since s; /archives//html/Amps/1999-12/msg00236.html (9,641 bytes)
217. [AMPS] drive derived screen potential (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 09:55:29 -0700; ? [chortle]. On the alt.religion.mormon Newsgroup, a participant who had claimed that he is pretty smart later stated that he "laid waist" to the opposing position. ? [guffaw] cheers, Colin - Rich..; /archives//html/Amps/1999-12/msg00238.html (9,239 bytes)
218. [AMPS] Biasing (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 11:54:16 -0700; ? We don't need no stinkin' data, Marv. Distortion level apparently does not change and Henry Radio has been doing this for decades. cheers, Marv. - Rich..., 805.386.3734, www.vcnet.com/measures. --; /archives//html/Amps/1999-12/msg00242.html (7,053 bytes)
219. SV: [AMPS] daf thank you (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 11:54:18 -0700; ? From my experiences, on the air tests of DAF amps must be an ambush. . - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@cont; /archives//html/Amps/1999-12/msg00243.html (7,566 bytes)
220. [AMPS] G2DAF and super cathode (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 11:54:19 -0700; ? Ian. Are there no fair-use quotes in the UK? thanks - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administ; /archives//html/Amps/1999-12/msg00244.html (8,784 bytes)

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