Heh, yes, the SDR dongles are quite fun to play with. You could be a beacon receiver (to help map propagation), track airplanes near you (and contribute to the

Heh, yes, the SDR dongles are quite fun to play with. You could be a beacon receiver (to help map propagation), track airplanes near you (and contribute to the nationwide map), listen to transmissions (voice or images) from satellites, be a RX only APRS i-gate (to improve APRS coverage), etc. Of course the options multiply once you get a license and transmit.