Even with the advent of spread spectrum technology, many RC aircraft pilots still use the 72 mhz frequency band. If you use a conventional PPM or PCM radio system, it’s very important that you be aware of the different frequencies and frequency control methods used by RC pilots. Failure to observe which frequencies are in use at any given time can result in the loss of one or more RC model airplanes due to radio interference.

Every FM RC model airplane operates on a fixed frequency. Groups of frequencies are divided into channels. Each specific frequency is given a channel number. This table lists the different frequencies found in the 72 Mhz band, and their respective channel numbers.

72MHz Channel / Frequency Table

11 / 72.010 28 / 72.350 45 / 72.690 12 / 72.030 29 / 72.370 46 / 72.710
13 / 72.050 30 / 72.390 47 / 72.730 14 / 72.070 31 / 72.410 48 / 72.750
15 / 72.090 32 / 72.430 49 / 72.770 16 / 72.110 33 / 72.450 50 / 72.790
17 / 72.130 34 / 72.470 51 / 72.810 19 / 72.170 36 / 72.510 53 / 72.850
20 / 72.190 37 / 72.530 54 / 72.870 21 / 72.210 38 / 72.550 55 / 72.890
22 / 72.230 39 / 72.570 56 / 72.910 23 / 72.250 40 / 72.590 57 / 72.930
24 / 72.270 41 / 72.610 58 / 72.950 25 / 72.290 42 / 72.630 59 / 72.970
26 / 72.310 43 / 72.650 60 / 72.990 27 / 72.330 44 / 72.670  

If you fly at a club, there will normally be a frequency board posted with the information above. Before any pilot turns on their radio system, they are expected to place a clip or pin on the frequency that they will be using. This ensures that each radio is operating on a separate frequency, and prevents many interference caused crashes.
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