Make your QRPp life fun

This double-sideband (DSB) radiotelephone transmitter is powered entirely by the instantaneous (not stored) energy produced in the operator’s voice. The RF output power in my prototype falls within the range of 5 to 15mW. The circuit is essentially a high-level DSB modulator/crystal-controlled RF oscillator. DX QSO made by author: 10/13/09    W1VZR  57/459     Limerick, ME  …