- 1. [Amps] Historical question-probably OT (score: 1)
- Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
- Date: Fri, 26 May 2006 20:45:00 +0200 (CEST)
- At Dayton, I got a 1960 ARRL Handbook ( got to update the station!) for my collection. It has an interesting HF amplifier in it, using a pair of 4X250, (NOT 4CX) running, it is claimed AB2 passive gr
- /archives//html/Amps/2006-05/msg00391.html (7,627 bytes)
- 2. Re: [Amps] Historical question-probably OT (score: 1)
- Author: Karl-Arne Markström <sm0aom@telia.com>
- Date: Fri, 26 May 2006 21:44:37 +0200
- I have to admit that I have run a pair of 4CX250B's in AB2 on 144 MHz during my SK6AB days... (late 70's) Hopefully the limitation time for these "crimes" has long passed. The DK1OF PA design for 144
- /archives//html/Amps/2006-05/msg00395.html (9,674 bytes)
- 3. Re: [Amps] Historical question-probably OT (score: 1)
- Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
- Date: Fri, 26 May 2006 22:23:13 +0200 (CEST)
- This ARRL Handbook is in pretty good shape - the cover is a bluey green. But it does go back to the days when a certain degree of technical knowledge was required, and the '20 year appliance operator
- /archives//html/Amps/2006-05/msg00397.html (7,743 bytes)
- 4. Re: [Amps] Historical question-probably OT (score: 1)
- Author: R L Measures <r@somis.org>
- Date: Sat, 27 May 2006 03:20:45 -0700
- Since 4cx250Bs and their cousins do not have a striped cathode and aligned grids like the 4cx1500B and 4cx600J, they are not anywhere close to linear in grid-driven service whenever grid current flow
- /archives//html/Amps/2006-05/msg00410.html (8,772 bytes)
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