unused channels - 166.00 mhz to 168.00 mhz

this is a rough cut - have not check them vs rrdb yet

166.0125
166.0375
166.05
166.0625
166.1125
166.15
166.1625
166.2125
166.3625
166.3825
166.40
166.4125
166.425
166.525
166.60
166.625
166.65
166.6625
166.7125
166.7375
166.8375
166.8625
167.1875
167.20
167.2625
167.275
167.2875
167.3125
167.3375
167.80
167.8125

all of these channels might be unused nationwide