Premium RTL-SDR bundle includes NESDR SMArTee XTR in beautiful brushed aluminum enclosure, re-designed antenna base with 2m (6.5') RG-58 feed cable, and 3 antenna masts A wide variety of improvements on other designs, including integrated 4.5V 250mA bias-tee, ultra-low phase noise 0.5PPM TCXO, 2 RF-suitable voltage regulators, custom heatsink, 2 silicone pads and SMA female connector 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 SDR frequency capability approximately 65MHz-2300MHz. Frequency range can be extended down to 100kHz or lower with the Ham It Up, also available on Amazon (B009LQT3G6) Proudly built by Nooelec in the USA and Canada! Full 2-year product warranty