The IM-me cost £8 from eBay although they can occasionally be found for even less. At the heart of the toy is a TI CC1110F32 SoC that combines a microcontroller, flash and sub-1GHz RF transceiver.
A variety of application software for the IM-me has been developed by Travis and others, including even a minimal operating system, the aptly named PinkOS. But the most useful application for this hardware comes from Michael Ossmann and turns it into a handy pocket spectrum analyser.
The bands covered by the spectrum analyser are:
281 – 361 MHz
378 – 481 MHz
749 – 962 MHzhttp://www.designspark.com/content/turning-£8-childs-toy-spectrum-analyser
I understand Fansome is working on loading QNX onto it, and turning it onto an SDR.