1. ATU-100 Antenna Tuner: measurement accuracy, automatic antenna tuner covers everything from 1.8 - 30 MHz. 2. Efficient: HF auto tuner is low power consumption, energy saving and environmental protection. 3. Easy to Use: Antenna tuner has stable performance and convenient use. Adopted by N7DDC+0.91 OLED V3.1. 4. High Quality: Excellent material and fine workmanship, antenna tuner is an exquisite product for use. 5. Portable: Size: about 200 x 120mm/7.9x4.7in, automatic antenna tuner is small and lightweight, easy to carry. : ELECTRICAL Model Number: Antenna Tuner Power supply voltage: 10-15VDC Maximum current consumption: 400mA Maximum working power: 100W Maximum possible measured power: 150W Minimum power required to start tuning: 5W Minimum possible measured power: 0.1W Measurement steps for power up to 10W: 0.1W Measurement steps for power 10W: 1W Power measurement accuracy: 10% Maximum installed inductance: 8.53uh Minimum installed inductance step: 0.05uh Maximum installed capacitance: 1869pf Minimum installed capacitance step size: 10PF Number of panel buttons: power, direct, automatic, functional Display: 0.91 led Colour:black Material:aluminum alloy Package Contents: 1 x ATU-100 HF Auto 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.