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1. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: k7fm@teleport.com (Lamb); Date: Thu, 16 Dec 1999 22:14:39 -0800; The reported instance instance of one G2DAF amplifier with a -22 db 3rd order distortion is within 10% of the published specifications of the 4CX250B tube using a closely regulated screen voltage. Ca; /archives//html/Amps/1999-12/msg00203.html (8,045 bytes)
2. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: mike@g0mjw.freeserve.co.uk (G0MJW); Date: Fri, 17 Dec 1999 08:36:32 -0000; of distortion How is -22 dB (1/160) within 10% of -25 dB (1/320) ? Surely it is twice as bad ? Besides, it is not the 3rd order product that matters so much, it is the 5th,7th,9th,11th...... -- FAQ; /archives//html/Amps/1999-12/msg00205.html (8,380 bytes)
3. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 17 Dec 1999 08:51:33 +0000; It's nonsense to build a whole argument on the claim that the IMD of a certain tube "is" any particular value. It all depends on the DC/RF operating conditions. Under other conditions, the IMD can be; /archives//html/Amps/1999-12/msg00206.html (8,976 bytes)
4. [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)
5. [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)
6. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: k7fm@teleport.com (Lamb); Date: Fri, 17 Dec 1999 06:40:45 -0800; Examining the cited test results was not intended to prove that the G2DAF circuit was a good circuit or that the stated Eimac specifications could not be improved. It was merely intended to question; /archives//html/Amps/1999-12/msg00210.html (10,174 bytes)
7. [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)
8. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Fri, 17 Dec 1999 10:31:34 -0800; The second test with an 813 was somewhat discounted because I have no specs from anyone on what the distortion products are when grid driven with a regulated screen. Suppose they are -18 db 3rd order; /archives//html/Amps/1999-12/msg00214.html (9,051 bytes)
9. [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)
10. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Fri, 17 Dec 1999 15:50:39 -0800; I do not have the exact wording at this computer of prior statements, but I do recall that Rich stated that the G2DAF failed two actuals tests. The first was with an 813 tube and the second was with; /archives//html/Amps/1999-12/msg00217.html (10,798 bytes)
11. [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)
12. [AMPS] 4CX250 in G2DAF Circuit (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 18 Dec 1999 13:18:39 +0000; You've hit it exactly with that last sentence. When you tune away from the signal, you want it to be gone completely. This means that higherorder IMD is more important in many ways than 3rd-order. 3r; /archives//html/Amps/1999-12/msg00221.html (9,726 bytes)

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