Can be equipped with antennas such as long-line antenna, GP, inverted V, positive V, dipole antennas Can be applied to any short-wave machine within 150w (as long as it can output 5-15w continuous radio frequency during tuning, it can be tuned, such as am, cw and fm), no control line is required Shortwave automatic tuner uses 12V, 10A and 16A high power relay for and Working range 1.9-54MHz Can provide the latest 3.2 driver that supports 12863 small screens, or 1602 screens. Under the condition of 7~22mm long line, it can pass the test of 3.5-54MHz amateur band Parameters: Tuning impedance range: 5 ohm-1.2K ohm Permissible supply voltage range: 11-15 V DC Maximum current consumption: 600mA Maximum operating power: 180 watts Power required to start tuning: 10 watts Minimum possible measured power: 0.1 watts Power measurement accuracy: 10% Typical consumption 200-500mA Note: The motherboard is finished, while other accessories need to be assembled. colour: blue Material: Plastic Package Contents: 1 x Set of Antenna Tuner 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.