1、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. 2、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. 3、Portable size and easy to carry, you can share this tool with your families and friends easily. 4、The frequency ranges is direct cuttent-160MHz and the maximum TX power is 100W. 5、Using 13.8V direct current to supplys power, the current is 200mA This SDR switch box has powerful functions such as max. 100W tx power, Insertion loss: < 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: Material: aluminium alloy Impedance: 50Ω Frequency range: direct current-160MHz Maximum TX power: 100W Radio frequency sense threshold:<10mW (1.8MHz-30MHz tested) ON time < 20ms / Release time: < 190ms Insertion loss: < 0.3dB @ 144MHz (0.2dB typical) RX isolation: > 38dB @ 144MHz (40dB  typical) Power supplys: 13.8V direct current 200mA Package size: 130 * 120 * 60mm / 5.1 * 4.7 * 2.4in Package weight: 480g / 1.1lb Packing list: 1 * Host 1 * Power Cord 1 * SMA to SMA Connecting Line 1 * PTT Control Line 1 * Host 1 * Power Cord 1 * SMA to SMA Connecting Line 1 * PTT Control Line