AAR Radio Channel designations. 7 160.215 31 160.575 55& 160.935 81& 161.325 8 160.230 32 160.590 56 160.960 82 161.340 9 160.245 33 160.605 57 160.965 83 161.355 10 160.260 34 160.620 58 160.980 84 161.370 11 160.275 35 160.635 59 160.995 85# 161.385 12 160.290 35 160.650 60 161.010 85 161.400 13 160.305 37& 160.665 61 161.025 87# 161.415 14 160.320 38 160.680 62 161.040 88 161.430 15 160.335 39 160.695 63 161.055 89 161.445 16 160.350 40 160.710 64 161.070 90 161.460 17 160.365 41 160.725 65 161.085 91# 161.475 18 160.380 42 160.740 66 161.100 92 161.490 19 160.395 43& 160.755 67 161.115 93 161.505 20 160.410 44 160.770 68 161.130 94 161.520 21 160.425 45 160.785 69 161.145 95# 161.535 22 160.440 46 160.800 70 161.160 96 161.550 23 160.455 47 160.815 71& 161.175 97 161.565 24 160.470 48 160.830 72 161.190 25& 160.485 49 160.845 73& 161.205 26 160.500 50 160.860 74 161.220 27 160.515 51 160.875 75& 161.235 28 160.530 52 160.890 76 161.250 29 160.545 53 160.905 77# 161.265 30 160.560 54 160.920 78 161.280 79 161.295 80 161.310 & = Base stations licensed on this frequency shall cooperate with Canadian Licenses using tertiary (15 Khz) frequencies to minimize mutual interference. # = When necessary, appropriate measures shall be taken to protect Canadian railroad radio station on adjacent tertiary (15 MHz) frequencies. AAR radio channel designations use two separate numbers. For example, 96 96 indicates the Richmond, Fredericksburg & Potomac Railroad. The first number is the transmitting frequency, the second is the recieving frequency. Thus, 96 96 is transmit and recieve on 161.550. Some roads use different transmit and recieve frequencies and would be something like 92 96, etc.