NooElec produces the NESDR low-cost, wide-band software defined radio receivers. All models are RTL-SDRs. RTL-SDR is a USB dongle that uses a DVB-T TV tuner based on the Realtek RTL2832 chipset. Several NESDR models have improved specifications: ultra-stable TCXO, high-performance tuner IC, extended frequency range, aluminum enclosure and protected antenna input. NESDRs are compatible with all RTL-SDR software packages, such as MATLAB, HDSDR, SDR Touch, SDR#, and Planeplotter.