Small FM Transmitter

RF Radio circuits | By: Diagram mania

The following diagram is a simple Small FM Transmitter circuit which uses small transmitter Hartley type oscillator. This transmitter designed to transmit voice input signal for small range transmission (for example: wireless microphone).

Small FM transmitter schematic 300x156 Small FM Transmitter

Normally the capacitor in the circuit reservation might be connected to the base of the transistor, but the ability of VHF base of the transistor acts as a short circuit, so that in fact it still is. The coil is four turns of wire wound around a quarter inch above 18swg. The aerial tap is about an hour and a half laps from the end of the offer. Audio sensitivity is very good when used with an ECM type microphone insert.

Small FM Transmitter circuit circuit source: http://www.zen22142.zen.co.uk/Circuits/rf/davidtx.htm