Wiparat Circuit Electronics

The circuit is the same as the V7 VHF FM transmitter, but with a few small additions. TR1 (BC547) is an inverted Hartley oscillator which is based on the inductor manufactured PCBs. This makes it stable and megga-setable throughout the VHF FM band (76MHz to 119MHz) and the BB105 varicap voltage is tuneable over about [...]

The circuit is identical to the V7 VHF FM Transmitter but with a few small additions. TR1 (BC547) is an inverted Hartley oscillator which based upon an inductor fabricated on the PCB. This makes it megga-stable, and setable anywhere in the VHF FM band (76MHz to 119MHz) and the BB105 varicap makes it voltage tuneable [...]