Portable RTL - SDR Software Defined Radio with Android - YouTube
Amazon.com: Nooelec NESDR Smart HF Bundle: 100kHz-1.7GHz Software Defined Radio Set for HF/UHF/VHF Including RTL-SDR, Assembled Ham It Up Upconverter, Balun, Adapters : Electronics
Gqrx SDR – Open source software defined radio by Alexandru Csete OZ9AEC