100KHz-1.7GHz Full Band UV HF RTL-SDR USB Tuner [DISCONTINUED]

Warm Reminder: HF (3-30MHz) need a high Gain Antenna, our antenna can not support this function! If you need High Gain Antenna please contact us first! WHAT IS SOFTWARE DEFINED RADIO (SDR)? In traditional hardware radios, the mathematical operations required to decode and process radio signals are performed using analogue circuitry. Recently, computers have become powerful enough to perform the required mathematical calculations in software, hence the term software defined radio. This has led to advanced radios that previously required complicated analogue hardware now being able to be implemented easily in software. This has reduced the cost of advanced radio capabilities such as wideband tuning and waterfall displays. WHAT IS THE RTL-SDR? The RTL-SDR is an extremely cheap software defined radio which is based on DVB-T TV (Digital HD TV) USB receiver dongles that have the RTL2832U chip in them. It was discovered by hardware hacker Eric Fry, Linux driver developer Antti Palosaari