Long Range Am Transmitter Circuit. The circuit is using a lm2950 5v voltage regulator ic comes in to 92 transistor package which will provide a stable 5v to the oscillator till the 9v battery runs down to 5 5 volts due to which the oscillator becomes frequency stable. The proposed long range transmitter circuit really is very steady harmonic free design which you can use with standard fm frequencies between 88 and 108 mhz.
By using matching dipole antenna and coaxial cable the range of signal transmission can be increased. These is the exact description of art swan the circuit s author this miniature transmitter is easy to construct and can be picked up on any standard fm receiver. 0 5 w fail safe long range fm transmitter fs czh 05b newly revised.
Get it as soon as fri feb 12.
The oscillator is built around q1 bc109 and related components. The tank circuit with inductance l1 and capacitance vc1 is tunable in the range of 500khz to 1600khz. The audio signal to be transmitted is given to the base of the transistor q1 via the audio driver transformer t1 the modulated signal is developed at the collector of transistor q1 the frequency of the transmitted signal can be tuned adjusting the gang. Retekess tr506 transmitter with portable am fm radio receivers support microphone aux input for church translation tour guide.
