The Digital revolution has come to Shortwave Broadcasting.
Enjoy the perfect quality and clear reception.
THE FIRST PROJECT
The Oscillator / Mixer with a Dual Gate MOS-FET Transistor
A simple, but working circuit
The first idea to get a quick start into the world of digital radio was
born: Take a Dual-Gate MOSFET, feed 455 kHz from a short wave receiver
to the first gate, hook up an IF coil as a simple 467 kHz oscillator on
the second gate and recover the 12 kHz on the drain. Add an interstage
transformer from an old CB transceiver in the drain of the FET to keep
the radio's ground and the PC ground apart to avoid irritating hum.
