1. [Automatic Tuning] This antenna tuner tunes automatically without the need for control lines, making it suitable for most broadcast stations.
2. [Premium Components] Equipped with premium SMD capacitor, C-channel capacitor, imported PIC chip and ultra- connector for high performance and reliability.
3. [Metal Cover] This antenna tuner is made of aluminum alloy Cover, providing stable and reliable performance, practicality, ease of use and long service life.
4. [0.96" Screen] Features a 0.96" organic light emitting diode screen for easy monitoring and adjustment of settings.
5. [Convenient Charging] This automatic antenna tuner is equipped with Type-C charging interface for efficient and convenient charging functions.

Technical data:
Item Type: Antenna Tuner
Material: aluminum alloy
Model: ATU 100 Pro+
Power supply voltage range: 10-15V DC
Display screen: 0.96 inch organic light emitting diode
Operating Frequency: 1.8-55MHz
USB charging current: 1A
Battery model: 3.6V 1350mAh (built-in)
Maximum current: 400mA
Maximum power: 100W
Maximum measurable power: 150 W
Minimum power to start setting: 5 W
Minimum measurable power: 0.1 W
Power measurement step below 10W: 0.1W
Power measurement step over 10W: 1W
Power measurement accuracy: 10%
Technical data maximum inductance: 8.53 uH capacity
Minimum inductor installation step: 0.05 μH
Maximum installation capacity: 1869 pF capacitor
Minimum capacitor installation step: 10 pF
ATU Antenna Tuner Product User :
1. Update to the latest firmware version 3.1.
2. New configuration interface that eliminates the need for repeated flashing and purchasing a burner.
3. Optimized power measurement calibration algorithm, more accurate power measurement.
4. Description of the configuration interface:
Access method:
Press and hold the TUNE button and turn on the rear power switch at the same time. Release the TUNE button when the OPTIONS screen appears to enter the settings interface.
Operating mode:
Short press the TUNE button to change the current value. Long press the TUNE button to switch settings.
Description of each option:
Auto mode (ON OFF):
You can freely control the automatic mode of the antenna tuner, so no automatic button is required, which is more convenient to use. If you don't want to use the device, you can set the value to ON to activate automatic mode. The default value is ON.
Loss display (ON OFF):
Display interface for arbitrary control loss calculation, more intuitive display. When the input power is sufficient to accurately measure the SWR, it indicates the power sent to the antenna and the efficiency of the and transmitter.
Fider Loss (0.0-9.9):
Define the cable loss value for more accurate antenna efficiency calculation. This value is used to calculate the power sent to the antenna. The loss value can be found in the reference data of the cable used, or you can measure the exact value yourself.
Auto (1.3-3.0):
Adjust the SWR starting value in Auto mode and control the SWR adjustment range autonomously, with a wider application range. The default value is 1.3. When Auto mode is enabled, the optimization process will be triggered when the SWR is above 1.3 and becomes (1.3-1).
Power on indicator (0-95s):
Customizable automatic screen off time, energy saving in standby
Set the duration of the display in seconds. When any key is pressed and RF power is applied, the backlight lights up. The default value is 00.

List of packages:
1 x Antenna Tuner
1 x USB Cable
1 x User Manual

Note:
1. There may be insufficient adjustment within 5W. Therefore, do not lower the value below 5 W. 2. It is recommended not to exceed a maximum power of 30 W when tuning. (You can set it to 100W after tuning and run it at this power, otherwise it may burn out.)
3. To start the ATU 100, you need a voltage of 9-12V. If you use a mobile power source or a computer USB interface output, you cannot start the ATU 100 due to the low voltage.