[Yaesu] FT-ONE - low output.

Dr. David Kirkby david.kirkby at onetel.net
Fri May 27 18:08:18 EDT 2011


I think I've managed to screw up my FT-ONE by transmitting into a bad load. The 
collector current is not going above about 1 A. If I used set the meter to FSD 
in the forward position, switching to the reflected actually shows beyond full 
scale! This is with a 50 Ohm load.

I'm not sure if the sensing of the RF has gone wrong, so the PA is shutting down 
as the reflected power is apparently so high.

I've not poured over the service manual yet, but does anyone know if the sensing 
for forward and reflected power occurs in the PA unit?

Any ideas?
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