How to expand more distance is the main issue from many customers take care of
RT97 is an economic and performance repeater to expand the handheld radios range. If you would like to expand more distance based on the Retevis RT97 repeater, you can use RT91 Power Amplifier to expand the handheld radios range.
1. How to programme the handheld radios with RT97 repeater
https://www.twowayradiocommunity.com/index.php/how-to-programme-rt29-with-rt97-repeater/
2. How to programme the handheld radios with RT91 Amplifier
For example, if you need 5-6 miles in radius range, however, RT97 only can expand 3-4 miles range, at this time, you need an RT91 Amplifier work with the handheld radios to expand more distance based on the Retevis RT97 repeater.