I believe that Q507 is switched on during receive, however if you go to the diagnostic screen in terminal it is switched off and only switches on when in TX. ?I haven¡¯t got either of mine in bits to confirm, but from memory I believe it was set up this way so the modulator function could be tested. ?Don¡¯t take this as gospel, as I may have misremembered.?
Nick G0OQK
