Unique PSK Transceiver
The circuit presented here is a method of using the standard PSK audio modulation from a PC sound card to transmit a PSK signal without the need for a SSB transmitter. Since the RF Power Amp runs in Class C mode, it is much more efficient than a linear amplifier normally used with PSK transmission.
   Unique PSK Transceiver
Go to Unique PSK Transceiver website
kd1jv.qrpradio.com