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Total 10 documents matching your query.

1. [Amps] multi-tube amplifiers (score: 1): Author: "Harold Mandel" <ka1xo@juno.com>; Date: Fri, 26 May 2006 08:54:38 -0400; Gents, At some point, running more than one good tube can only achieve limited results, measured "bang-for-buck" or "steps-in-reinventing the wheel." Many years ago I built a transmitter that used 4; /archives//html/Amps/2006-05/msg00372.html (8,027 bytes)
2. Re: [Amps] multi-tube amplifiers (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Fri, 26 May 2006 16:04:20 +0200; @ 5 kW plate dissipation a twin GU84B will be more capable than a quattro GU74B amp. 2 x GU84B can be had for approx Euro 220.-, 4 x GU74B @ Euro 240.- With approx loaded 3000 V B+ no vacuum caps are; /archives//html/Amps/2006-05/msg00375.html (10,609 bytes)
3. Re: [Amps] multi-tube amplifiers (score: 1): Author: Bill Turner <dezrat@copper.net>; Date: Fri, 26 May 2006 07:12:35 -0700; ORIGINAL MESSAGE: ** REPLY SEPARATOR ** This used to be pretty common, but isn't really good design because the metal shell of a 6L6 is not thermally connected to the anode except by radiation. If yo; /archives//html/Amps/2006-05/msg00376.html (7,586 bytes)
4. Re: [Amps] multi-tube amplifiers (score: 1): Author: Tony King - W4ZT <amps080605@w4zt.com>; Date: Fri, 26 May 2006 13:35:34 -0400; <snip> There are only two justifications for the multi-tube build: 1) You already have all the components and just want to use them. 2) It's something you just want and have to do. Beyond that, the g; /archives//html/Amps/2006-05/msg00389.html (8,884 bytes)
5. Re: [Amps] multi-tube amplifiers (score: 1): Author: "Mike McCarthy, W1NR" <lists@w1nr.net>; Date: Fri, 26 May 2006 14:16:17 -0400; I am considering building a dual 4CX1500B amplifier for a nice clean 1500W of AB2 output. Since one tube is only rated for 1100W output in AB2, the need for two to reach full "leagal" limit. Since I; /archives//html/Amps/2006-05/msg00390.html (8,245 bytes)
6. Re: [Amps] multi-tube amplifiers (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Fri, 26 May 2006 20:54:40 +0200 (CEST); Years ago, I designed a marine transmitter that had 3 6146B's in parallel. The available output power at a given IMD level ranged over about 3dB, because of variations in exciter IMD, power supply vo; /archives//html/Amps/2006-05/msg00392.html (8,225 bytes)
7. Re: [Amps] multi-tube amplifiers (score: 1): Author: Colin Lamb <k7fm@teleport.com>; Date: Fri, 26 May 2006 12:20:49 -0700 (GMT-07:00); I am familiar with solid state amplifiers using combiners - somewhat common. Were there any commercial tube amplifiers using combiners? Any precautions, notes or advice - beside using a lot of extra; /archives//html/Amps/2006-05/msg00393.html (8,363 bytes)
8. Re: [Amps] multi-tube amplifiers (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Fri, 26 May 2006 15:42:50 -0400; That is the one Colin! That was my first hand book and I still have it. The binding fell apart and my dad later glued it with some cloth to keep it somewhat together. I still have it. The 4X250 amp; /archives//html/Amps/2006-05/msg00394.html (9,434 bytes)
9. Re: [Amps] multi-tube amplifiers (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Fri, 26 May 2006 22:10:29 +0100; To get most of the combined power out in the right direction, the amplitude and phase of the two inputs to the combiner have to be reasonably well matched. Solid state amps tend to manage this by def; /archives//html/Amps/2006-05/msg00402.html (8,848 bytes)
10. Re: [Amps] multi-tube amplifiers (score: 1): Author: GGLL <nagato@arnet.com.ar>; Date: Fri, 26 May 2006 23:10:32 -0300; Gary Schafer escribió: I also have that edition (although spanish translated by a local editor). It specifies 650 watts input, 1500 V plate voltage, 300 V screen voltage, and -40 V grid bias.; /archives//html/Amps/2006-05/msg00408.html (8,363 bytes)

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