Optimal Frequency Range: This 1420MHz power amplifier is designed for 1320-1520MHz, ensuring excellent performance for amateur radios and walkie-talkies High Power Output: Delivers a powerful 15W of power, enhancing signal strength and communication range, perfect for a variety of radio applications Versatile Compatibility: Perfect for a variety of amateur radios and walkie-talkies, ensuring wide device compatibility Design: Built to last, this power amplifier can withstand rigorous use in a variety of environments, making it a reliable choice for radio enthusiasts Working frequency: 1320-1520MHz (1420) Output power: 13W (41dBm@24V, RFin=5dBm (3mW)) 15W (42dBm@28V, RFin=5dBm (3mW)) 20W (43dBm@28V, RFin=7dBm (5mW)) Working voltage: 20-28V (24V recommended) Working current: 1.7A (depending on the power supply voltage) System impedance: 50 ohms Connector model: SMA female (external screw inner hole) Note: an external heat sink is required Colour:As Shown Material:Metal The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * Power Amplifier 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.