I want a circuit diagram for transmitting and recieving audio signals up to 500 mts with
fixed 2 or 3 frequencies like walkie talkie give all coil winding details and xtal with freq which is easily avaliable in the market if possible avoid more coils.select freq which will not creat problem for local radio stations and police wireless stations. the range should not exceed 500 mtrs.
Regards Sambath kumar.
fixed 2 or 3 frequencies like walkie talkie give all coil winding details and xtal with freq which is easily avaliable in the market if possible avoid more coils.select freq which will not creat problem for local radio stations and police wireless stations. the range should not exceed 500 mtrs.
Regards Sambath kumar.
