Purpose: This product is only used for receiving short wave broadcasting. If there is a antenna, it can receive HAM communication.Stable: NE602 mixing chip is adopted, with stable performance.Equipped with: with connecting wire to the stability of connection.Simple operation: easy to use and operate.Durable: Made of high-quality materials, it is durable and has a long service life.Product name: RTL-SDR HF up converterMaterial: metalColor: BlackReceiving frequency: 150K-30MHZWorking voltage: 5V: 1.6WLocal oscillator: 125MHZ, which is very important. It needs to be set in the software or+125M in frequency. For example, 7.05M is 123.05M (7.05+125)Mixing chip: NE602explain:1. According to the circuit design and modification in the online radio discussion2. As long as it is used to receive short wave broadcasting, if there is a antenna, it can receive HAM communication3. SDR softwarePackage Contents:1 x RTL-SDR up converter1 x USB cable1 x Connecting line1 x male to femaleOnly the above package content, other products are not included.Note: Light reflection 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.