Receiving frequency: 150K-30MHZ; working voltage: 5V; Power: 1.6W LO: 125MHZ, this is very important, need to set in the software or frequency + 125M, such as 7.05M, is 123.05M (7.05 +125); Mixing chip: NE602 According to the online radio talk in the circuit design and modification. As long as used to receive shortwave broadcast, if a professional antenna can receive HAM Colour:black Material:Aluminum alloy Package Contents: 1 set * SDR Receiver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.