ATU-100-0A Automatic Antenna Tuner OLED Display Aluminum Alloy with Battery O5G0

ATU button TUNE use: short press (less than 1 second) ATU button, it is in reset state, long press (more than 1 second) ATU button is in tuning state. You need to use an antenna tuner. Press and hold the ATU button tune to tune and observe the SWR value.

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