Quote:
Originally Posted by zakari
hi
i used china digital fm transmitter module and injecte weak signal from transmitter to base of tr2 ,i have removed xtal and tr1 i have nulled transmitter and reciever antenna's
that is working good
now i can change the transmitter frequence and tune in my area for best operation
best regard
zakari
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What you did is very interesting, did you keep L1 / C10? If so, have you tuned the transmitter frequency with L1 / C10? I too am experimenting with an FM oscillator that I made, my problem is that the signal is always too strong and saturates the sensor stage, I have tried unsuccessfully to shield the oscillator and further decouple the oscillator power supply.