This is a receiver with RTL2832U ADC chip, R820T2 tuner, 1PPM TCXO, SMA F connector, and aluminum housing with passive cooling. Tunable from 500 kHz to 1.7 GHz with bandwidths up to 3.2 MHz (2.4 MHz stable). HF reception works in direct sampling mode. Compatible with computer-based SDR software such as SDR#, HDSDR, SDR-Radio, GQRX, or SDR Touch on Android. Works with Windows, macOS, Linux, and Android devices. Suitable for applications including general radio scanning, air traffic control, public safety, ADS-B aircraft tracking, ACARS, trunked radio, P25/MotoTRBO digital voice, POCSAG, weather balloons, APRS, APT/Meteor M2 weather satellites, radio astronomy, and as a low-cost panadapter with amateur radio transceivers. Includes a versatile dipole antenna kit suitable for beginners. Short antennas are optimized for ADS-B; longer antennas perform well at lower frequencies. In V-dipole configuration, the antenna supports 137 MHz weather satellites and the International Space Station. Vertical configuration is suitable for ground-based signals. Two mounting brackets and RG174 coaxial cable enable easy outdoor installation. This model features improvements over standard versions: enhanced R820T2 tuner, 1PPM TCXO, higher-grade components, redesigned low-noise PCB, improved thermal management, additional ESD protection, SMA F connectors, and a software-activatable bias tee for powering LNAs or active antennas. Color: Silver Material: Metal Package Contents: 1 x RTL-SDR radio receiver Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.