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Re: Low Tune power FIX


 

开云体育

My schematic shows 33pf. The parts list shows 39pf. Looks like it is across the 20pf. Trimmer cap for the 8999.3khz crystal.?

Fred
N1DEC?


7

On Aug 10, 2023, at 7:34 AM, Gene N4FZ <felsummers@...> wrote:

?
The IF board schematic shows C428 present next to the CW Oscillator crystal and trimmer. Schematic shows a 39pF, but the cap I removed had 33K stamped on it.?



On Aug 9, 2023 at 9:07 PM, <emerson> wrote:

I do not found C428 at IF board.?
The C428 is 39p.

Emerson


Em qui., 29 de jun. de 2023 às 17:21, Forest (Gene) Summers <felsummers@...> escreveu:
I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?

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