How to set the Mobile repeater RT97?

Retevis RT97, the Analog Repeater with 16 channels. Output 10w.
With a lot of features like:
1, Customizable: The TX and RX frequencies can be customized between UHF (400-470MHZ) or VHF (136-174MHZ).
2, Output power: 10W. Not like the big power repeater, this repeater will have less radiation than the High-power one.
Small size: With the package size: 310×283×170mm. Very small and easy to carry, you can use it outdoor.
3, Car charger: Provide the car charger, you can use this repeater in your car.
4, Multi-charger way: Not only provide the car charger but also provide the DC12V~24V power. Very convenient.

[topshot]

If you guys are willing to sell this on the US market you guys need to make it so it will do a 5 megahertz Channel split