Application Notes:
This small transmitter uses a hartley type oscillator.
Normally the capacitor in the tank circuit would connect at the base of the transistor, but
at VHF the base emitter capacitance of the transistor acts as a short circuit, so in effect,
it still is. The coil is four turns of 18swg wire wound around a quarter inch former. The
aerial tap is about one and a half turns from the supply end. Audio sensitivity is very
good when used with an ECM type microphone insert.