Wide Frequency Range: The ATU-130 antenna tuner is designed to cover a frequency range of 3.5-54MHz, allowing for versatile use across different bands. Efficient Tuning: With a tuning impedance range of 5ohm-1.2Kohm, this automatic antenna tuner ensures efficient matching between the transmitter and the antenna, optimizing the overall system performance. Reliable Components: The tuner utilizes high-quality components such as PIC18F2520 MCU, T94 magnetic ring inductors, and HF32 and HF33 relays, which enhance its durability and reliability for long-term use. Compact Design: Measuring at 38x88x155 mm, this tuner boasts a compact and space-saving design, making it suitable for installation setups. Convenient Power Supply: Powered by an 11-14VDC power supply, the ATU-130 antenna tuner is easy to integrate into existing power setups, ensuring a seamless and hassle-free operation. Part Name:Automatic Shortwave Antenna Tuner Coverage Frequency:3.5-54MHz Tuning Impedance range:5ohm-1.2Kohm Tuning Power:5-15W Transmit Power:SSB 160w max Maximum Measurable power:180w Power Supply:11-14VDC power supply Colour:As Shown Material:Plastic+Metal Size:About 38x88x155mm/1.5x3.5x6.1 inches(without the size of protrusions) Package Contents: 1 set * Antenna Tuner 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.