This SDR switch box has powerful functions such as max. 100W tx power, Insertion loss: Less than 0.3dB @ 144MHz (0.2dB typical). The cover of this product is made of aluminium alloy material. If you are looking for this product, come and have a try, it will not let you down. Features: Preferred Material: The cover of this SDR switch box is made of aluminium alloy material, it has the characteristics of not easy to damage and long service time. A Full Accessory Set: This tool set comes with a host, a 600mm SMA to SMA connecting line, a PTT control line and a power cord. Portable size and easy to carry, you can share this tool with your families and friends easily. The frequency ranges is direct cuttent-160MHz and the maximum TX power is 100W. Using 13.8V direct current to supplys power, the current is 200mA. Specifications: Color: Black Material: aluminum alloy Impedance: 50 Frequency range: direct current-160MHz Maximum TX power: 100W RF sense threshold:Less than10mW (1.8MHz-30MHz tested) Less than 20ms / Release time: Less than 190ms Insertion loss: Less than 0.3dB @ 144MHz (0.2dB typical) RX isolation: 38dB @ 144MHz (40dB typical) Power supplys: 13.8V direct current 200mA Package Contents: 1 x SDR Transceivers 1 Cord 1 x SMA to SMA Connecting Line 1 x PTT Control Line Only the above package content, other products are not included. Note: Light reflection 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.