I have just built D4D 20m kit..
Receiving well, but just not getting any replies..
Relay clicks ok.. have changed the output transistor. (BD139). and voltages on it on TX are as follows..
B - 0.892v
C - 11.82v
E - 0.291v
I dont have a scope to test, but kinda looks like its tx'ing... but not sure
Anything else I should check ?