Type:Voltage Regulator This kit welding, making easy to understand, easier to learn, easy to use. Comes with standing instructions, Q9 type interface (such as the need to own M-type interface), using T-topology networks, QRP facilitate communication with low-power ceivers (shoes, frogs, octopus, etc.) used to make ceiver and antenna effective match to your emission requirements, efficient communication ceivers. Features: when exposed to tune straight power: Less than 20W when adjusting the input power tuning: Less than 3W Tuning indication: LED display Operating frequency: 1-30MHz Antenna Interface: Q9 type The antenna impedance matching range: about: 30 ~ 300 Carrying RF power: less than 15W Tuning required RF power: less than 3W Note: this suite for bulk, it need you to welding, drilling, installation. Color: silver Material: metal + PC Package Contents: 1* DIY manual antenna kit Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.