As it pertains to our AM radio stations, due to FCC regulations the current signal strength cannot be changed. In the evening, an increase of power would adversely affect other stations on the radio dial with the same or similar frequencies. We are always looking into ways to improve the quality of the sound. Please note, you can listen to the GRN 24/7, clear-as-crystal, on our mobile. Just search for "Guadalupe Radio Network" in your app store. It's free!