If you're a cheapskate (like me) with some moderate to advanced computer skill you can purchase a USB software defined radio such as the RTL2832U for cheap. You have to buy two of them ~ $15 each and then install some free software on to a windows PC. There a multiple forums on RR about this process. You need two radios, one to decode the signal and another that will jump from frequency to frequency to follow the voice traffic. I am hoping to put up a feed in a couple of months. Good luck!