I sat up tonight putting together a semi-kit of David Carr's Simple Software Radio Peripheral, which is more or less an "RF to USB 2.0" interface. I'm going to use this as a platform for learning more about GNU Radio.

I'm looking forward to getting a USRP board soon, which I intend to use in the EME station I'm building. In the meantime, the SSRP board looked like an easy way to get started, particularly since it uses essentially the same parts of GNU Radio as the USRP...