Feature: 1. Automatic tuner, supports fixed errors, continuous data transmission to the screen. 2. 0.96 inch for OLED display, timer screen disables all relays. The new cell 35‑01 activates Reforting. 3. Configure display timer: Cell 32. Can be used in QRP configuration where energy consumption is of great importance. 4. The waiting time for restarting screen is increased to 2 seconds, which is necessary for OLED screens with strings on the RESET pin. 5. Automatic antenna tuner, with shell, easy to install and remove, stable performance, long‑term use. Specification: Item Type: Automatic Antenna Tuner Material: Alloy Model: ATU-100 Display: 0.96in for OLED Main Features: Working Frequency: 1.8-55 MHz Power Supply: 3.6V Lithium Battery 1350mAh (Built-In) USB Charging Current: 1A Maximum Working Power: 100W Maximum Possible Measured Power: 150W 1W: It is necessary to start setting the minimum power The Smallest Possible Measurement Power: 0.1W Measurement Procedure and Power to 10W: 0.1W Timely Powerful Measurement Steps STI above 10W: 1W Power Measurement Accuracy: 10% Specified Maximum Inductance: 8.4μH Minimum Installation of Inductance: 0.05μH Maximum Installed Capacity: 1870 PF Capacitor Minimum Installation: 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 the radio mode, use FM mode 4. Select the antenna frequency band to be used, use 20-30W power in FM mode, press the radio PPT, observe the ATU antenna tuner PWR and SWR 5. The 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 6. If the SWR display of the ATU antenna tuner is greater than 2.0 in the transmission state, it means that the antenna has been detuned. You need to use an antenna tuner. Press and hold the ATU button TUNE to tune and observe the SWR value. If the SWR is greater than 3.0 after tuning, the antenna will be detuned. Seriously, it is not recommended to use a power above 30W, and the transmission power should be controlled below 30W; if the tuning is completed, the SWR display is less than 2.0, and the maximum power of 100W can be used for transmission. Package List: 1 x Automatic Antenna Tuner1 x Manual