Proudly built by Nooelec in the USA and Canada! Full 2-year product warranty. SDR frequency capability approximately 65MHz-2300MHz. Frequency range can be extended down to 100kHz or lower with the Ham It Up, also available on (B009LQT3G6). Designed from the ground up to reduce USB port occlusion. Run multiple NESDR SMArt series devices side-by-side with any USB-compliant device, including tightly-spaced embedded devices like the Raspberry Pi. A wide variety of improvements on other designs, including ultra-low phase noise 0.5PPM TCXO, 2 separate RF-suitable voltage regulators, custom heatsink, 2 silicone pads and SMA female connector. Premium RTL-SDR bundle includes NESDR SMArt XTR in beautiful brushed aluminum enclosure, re-designed antenna base with 2m (6.5') RG-58 feed cable, and 3 antenna masts.