Recently installed new CM-300 in my personal vehicle. Was a brand new install on 2012 silverado. Have a lightbar and siren also installed as this is for the fire service. Have noticed that the radio seems to have weaker reception then other cm-300's that I've have been around and after a radio check last night I am transmitting with considerable static. Have checked the antenna from radio to antenna and see no issue there and radio is on high power and correctly narrow banded. I believe the issue is how it's hooked up but not sure if that could cause the reception issue. The radio calls for a 15 amp power wire. Due to the other items I'm powering, I ran 1 30amp power wire and that powers my light, siren and radio as the three together don't pull that much amps. It has its own separate ground wire to a bolt though the floorboard. I figured a bad ground might cause that but normally when I transmit I have my light and siren going and I'm told I am clear and no static. Is it possible that when everything else is off that the radio pulls to much power and has static issues? Would that or a bad ground explain the weak reception? My minitorV pager has better reception that my mobile does.