Specification:
Item Type: Mini Antenna Tuner
Material: Aluminum Alloy
Battery Model: 1350mAh 3.6V lithium battery (built in battery)
USB Charging Current: 1A
Maximum Working Power: 100W
Maximum Measurement Power: 150W
Tuning Start Minimum Power: 1W
Minimum Measurement Power: 0.1W
Step for Measuring Power Below 10W: 0.1W
Step for Measuring Power Above 10W: 1W
Power Measurement Accuracy: 10%
Maximum Setting Inductance: 8.4uH
Inductance Minimum Setting Step: 0.05μH
Maximum Setting Capacity: 1870pF capacitor
Minimum Setting Step: 10pF

How to Use:
1. Connect the radio, ATU antenna tuner, antenna
2. When using for the first time, please set the output power of the radio or power amplifier between 20‑30W, warning that high power tuning may easily damage the antenna tuner.
3. Set radio mode, use FM mode
4. Select the antenna frequency band to use, use 20‑30W power in FM mode, press radio PPT, observe the ATU antenna tuner PWR and SWR
5. Use of ATU Button TUNE: short press (less than 1 second) ATU button, it is in reset state, long press (more than 1 second) ATU button is in adjustment state

Package List:
1 x Antenna Tuner
1 x USB Cable

Note:
1. Insufficient adjustment may occur within 5W, so do not lower than 5W.
2. You need to use 9‑12V to start the ATU‑100. If you use a power bank or computer USB port to output power, you cannot start the ATU‑100 because their voltage is too low.