You are around 4 miles from one of the strongest repeaters in the area on 462.675Mhz with a 50 mile radius. I used to be able to hit it from Pensacola on occasion. Channel 6 is only 12.5kHz away (462.6875Mhz). If the repeater is running wide band, running slightly off frequency, your receive is off or sensitivity/selectivity sucks, etc.. it could sneak through. Is the id the same as the repeater on 462.675?