Ищи по "E4000 sdr"Самое дешевое за 11 баксов, в описании английским по белому.
Если чип не тот, с чистой совестью лепишь минус - китаёзы кипешат и возвращают деньги, убираешь минус.
IC CHIP : Realtek RTL2832U / E4000
software defined radio / SDR GNU GPS GSM FM Radio
The RTL2832U outputs 8-bit I/Q-samples, and the highest theoretically possible sample-rate is 3.2 MS/s, however, the highest sample-rate without lost samples that has been tested so far is 2.8 MS/s. The frequency range is highly dependent of the used tuner, sticks that use the Elonics E4000 offer the best range (64 - 1700 MHz).