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Total 8 documents matching your query.

1. [Amps] 6M 8171 (score: 1): Author: barrie at centric.net (Barrie Smith); Date: Sun Apr 20 08:31:28 2003; Sometime ago, I bought an 8171 with socket, chimney and filament transformer with the idea of building a 6M amplifier. This project is not intended to be for the greatest power output, but for an amp; /archives//html/Amps/2003-04/msg00197.html (7,686 bytes)
2. [Amps] 6M 8171 (score: 1): Author: mike.tubby at thorcom.co.uk (Michael J. Tubby B.Sc. (Hons) G8TIC); Date: Mon Apr 21 09:06:29 2003; transformer withstand QUIET I'm capacitances Barrie, I don't know the specifics of the 8171 (4CX10000 ?) but I have played with 8877, 3-500 and 3CX800 amps on 6m. The relatively large anode capacita; /archives//html/Amps/2003-04/msg00200.html (9,056 bytes)
3. [Amps] 6M 8171 (score: 1): Author: 2 at vc.net (2); Date: Mon Apr 21 16:40:06 2003; ? The RL of an 8171 is c. 1200?, so, at 50MHz, a total C-Tune of roughly 80pF is needed for a Q of 15. Since the anode-screen C, stray C, and the neutralizing bridge total c. 30pF, a 50pF Tune-C sho; /archives//html/Amps/2003-04/msg00205.html (9,559 bytes)
4. [Amps] 6M 8171 (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Mon Apr 21 16:40:09 2003; There was also a design for a six meter amp in one of the fairly recent ARRL handbook that used a compressable coil. The amp was tuned by turning a threaded rod which in turn would compress or expand; /archives//html/Amps/2003-04/msg00206.html (8,018 bytes)
5. [Amps] 6M 8171 (score: 1): Author: mike.tubby at thorcom.co.uk (Michael J. Tubby B.Sc. (Hons) G8TIC); Date: Tue Apr 22 08:54:23 2003; transformer to withstand QUIET 6 I'm capacitances problem scaled ? The RL of an 8171 is c. 1200?, so, at 50MHz, a total C-Tune of roughly 80pF is needed for a Q of 15. Since the anode-screen C, stra; /archives//html/Amps/2003-04/msg00207.html (10,477 bytes)
6. [Amps] 6M 8171 (score: 1): Author: DF3KV at aol.com (DF3KV@aol.com); Date: Tue Apr 22 08:54:29 2003; I guess that value of RL is at 15KW output power, so at 1500W it will be much higher and C-Tune need to become much smaller 73 Peter; /archives//html/Amps/2003-04/msg00208.html (7,171 bytes)
7. [Amps] 6M 8171 (score: 1): Author: RMcGraw at Blomand.Net (Robert & Linda McGraw K4TAX); Date: Tue Apr 22 10:08:14 2003; One of the approaches I've used in the past to adjust or tune PA output networks is the "reverse approach" use of a product like the MFJ Antenna Analyzer. Look at it this way. The PA output networks'; /archives//html/Amps/2003-04/msg00209.html (12,952 bytes)
8. [Amps] 6M 8171 (score: 1): Author: 2 at vc.net (2); Date: Wed Apr 23 08:55:47 2003; roughly 1200-ohms of RL would also be the case at 1.5kW out if anode supply V and anode A remained in the same ratio. ** The standard of veracity about moonbounce amplifiers was set c. 42-years ago; /archives//html/Amps/2003-04/msg00211.html (8,181 bytes)

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