The answers are found in 47CFR95, available from www.fcc.gov or from www.gps.gov. 47CFR95 is the set of FCC rules addressing the Personal Radio Service, of which radio control is a part.

AMA's Membership Manual also lists these assignments, but the governing document remains 47CFR95.

47CFR95.205 reads in part :

(2) The following channels may only
be used to operate a model aircraft device:
MHZ
72.01
72.03
72.05
72.07
72.09
72.11
72.13
72.15
72.17
72.19
72.21
72.23
72.25
72.27
72.29
72.31
72.33
72.35
72.37
72.39
72.41
72.43
72.45
72.47
72.49
72.51
72.53
72.55
72.57
72.59
72.61
72.63
72.65
72.67
72.69
72.71
72.73
72.75
72.77
72.79
72.81
72.83
72.85
75.41
75.43
75.45
75.47
75.49
75.51
75.53
75.55
75.57
75.59
75.61
75.63
75.65
75.67
75.69
72.87
72.89
72.91
72.93
72.95
72.97
72.99
(3) The following channels may only
be used to operate a model surface
craft devices:
MHZ
75.71
75.73
75.75
75.77
75.79
75.81
75.83
75.85
75.87
75.89
75.91
75.93
75.95
75.97
75.99