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Hi George. Did you check if Q3 is functioning? On receive the gate of Q3 should be high and the drain should be low.
output ok means 50W+ ?
If so, the transformers should be correct direction, pease check this twice.
And there is no short with the ferrit of the torroids in case the enamel of the wire could be damaged?
Check with ohmmeter must be somewhat above some MOhms.
May be one of the pin diode is faulty, or wrong direction?
They are responsible for RX/TX switching.
Hans had a nice description of the functionality in his manual.