Folks, I finally creaed a simple base station with my GMRS radios, thank you for all your advices. After reasearching further, I noticed that this Retevis RB91 that comes with its own 2 way radio enhances the distance for the hand helds without the need of a GMRS base station more on a private level. Is this repeater legal here in the US? Does FCC allow the use of this repeater with our GMRS licenses?