Hubceuo Feature: This receiver has a built-in 1 ppm temperature compensation crystal (TCXO). Make the frequency more stable and accurate. The almost zero temperature drift (2 ppm initial deviation, 1 ppm temperature drift) increases the internal chip heat dissipation, making the work more stable. Using the latest RTL2832U + R820T2 solution (R820T2 tuner has slightly better sensitivity than R820T, lower background noise and higher signal-to-noise ratio. Can work more stably at frequencies around 1.5 GHz. ) The Q channel on the RTL2832U is used to increase the direct mining reception of the frequency of 100KHz-24MHz. Achieved 100KHz-1.7GHz full segment reception. Support for Windows XP/7/8/0, for , for Android and other systems. Specification: Type: with Antenna Product size: 71 x 43 x 19mm/2.80 x 1.69 x 0.75 inch Product weight: 34g Color: silver material: metal Package Contents: 1 x RTL SDR Receiver 1 x Antenna Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.