The WR-G303i is the first of our G3 Series of software defined receivers.
A Software Defined Receiver (SDR) is such where demodulation and last IF (intermediate frequency) processing are done entirely in software. Usually this means using a DSP, but in the case of the G303i, this processing is done on a personal computer using a sound card (most modern PCs are now faster and more powerful than many DSPs were only a few years ago). So, if you own a PC, the chances are that you already own an important part of a Software Defined Receiver! http://www.grove-ent.com/WR303i.html Technical Specifications Frequency range 9 kHz to 30 MHz Tuning resolution 1 Hz Modes AM, AMN, AMS, LSB, USB, CW, FM3, FM6, FMN (The optional Professional Demodulator also includes DSB and ISB modes.)