If you are looking for something you could build in one or two sittings, you might consider starting with a regenerative receiver. We’ve looked at them before and even have one that uses a LM386 ...

This unconventional Arduino-based FM receiver is the result of one such inventory overflow, and even though it may take the long way around to listening to NPR, [Kevin Darrah]’s build has some ...

That is capable of enabling your Arduino project to communicate with people and things using amateur radio bands.

The Rapid Radio is a 2.4GHz ISM band devices and is both Raspberry Pi And Arduino compatible and is supplied with full rapidradio source ...