I did airband scan here near Rogersville, TN and found two frequencies that were not in the RR database. 128.050 and 132.800. I was able to find 128.050 on the Airnav page for Tri-Cities Airport, Johnson City as Atlanta ARTCC Approach. I haven't been able to identify 132.800, but it was quite active and I heard aircraft being told to contact the tower on 121.2 which is the tower at the Knoxville airport. I suspect it's an Atlanta ARTCC Approach frequency.