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1. [AMPS] 4-1000A Configuration (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 5 Jun 98 09:04:07 -0500; OK all, I've been unable to get a satisfactory answer on this question, so I'll ask the whole reflector: The other day, someone posted a question about wanting a schematic for a grid driven 4-1000A.; /archives//html/Amps/1998-06/msg00069.html (8,035 bytes)
2. [AMPS] 4-1000A Configuration (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 5 Jun 98 10:54:12 -0800; How better? The answer is not yes or no. Efficiency is a bit higher in AB2 cathode-driven, however, the drive requirement is higher than for AB1 grid-driven. For wide freq. coverage, the tuned input; /archives//html/Amps/1998-06/msg00075.html (8,910 bytes)
3. [AMPS] 4-1000A Configuration (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 5 Jun 98 14:08:33 -0500; Well, since the efficiency of a tube PA ain't real good anyhow, big deal from what I can tell. The fact that drive power is less and that the tuned input is less complex seems to outweigh the effici; /archives//html/Amps/1998-06/msg00080.html (9,370 bytes)
4. [AMPS] 4-1000A Configuration (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 5 Jun 98 14:05:59 -0800; Depends on the anode and screen supply potentials. In grid-driven service, the minimum anode potential during peak drive is no less than the screen potential, which in this case is 1000v. However, i; /archives//html/Amps/1998-06/msg00086.html (9,542 bytes)
5. [AMPS] 4-1000A Configuration (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 5 Jun 98 16:18:18 -0500; Correct. But, there is NOT zero feedback at VHF. That's what I was saying. 73, Jon KE9NA -- Jon Ogden jono@webspun.com www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: h; /archives//html/Amps/1998-06/msg00088.html (7,552 bytes)
6. [AMPS] 4-1000A Configuration (score: 1): Author: k8cc@ix.netcom.com (David A. Pruett); Date: Sat, 6 Jun 1998 00:53:13 -0400; John, reflector are correct. If you run moderately high plate voltage (3000-4500 VDC) you'll see about 10 dB gain. If you have a 200W exciter that might be OK for 1500W out but watch the grid current; /archives//html/Amps/1998-06/msg00096.html (8,532 bytes)

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