47 CFR 90.715: Frequencies available.

(a) The following table indicates the channel designations of frequencies available for assignment to eligible applicants under this subpart. Frequencies shall be assigned in pairs, with base station frequencies taken from the 220-221 MHz band with corresponding mobile and control station frequencies being 1 MHz higher and taken from the 221-222 MHz band. Only the lower half of the frequency pair(s) is listed in the table. Use of these frequencies in the Mexican and Canadian border areas is subject to coordination with those countries. See paragraph (c) of this section for special provisions concerning use in the Mexico border area.

Table of 220-222 MHz Channel Designations

Channel No. Base frequency (MHz)

1 220.0025

2 .0075

3 .0125

4 .0175

5 .0225

6 .0275

7 .0325

8 .0375

9 .0425

10 .0475

11 .0525

12 .0575

13 .0625

14 .0675

15 .0725

16 .0775

17 .0825

18 .0875

19 .0925

20 .0975

21 220.1025

22 .1075

23 .1125

24 .1175

25 .1225

26 .1275

27 .1325

28 .1375

29 .1425

30 .1475

31 .1525

32 .1575

33 .1625

34 .1675

35 .1725

36 .1775

37 .1825

38 .1875

39 .1925

40 .1975

41 220.2025

42 .2075

43 .2125

44 .2175

45 .2225

46 .2275

47 .2325

48 .2375

49 .2425

50 .2475

51 .2525

52 .2575

53 .2625

54 .2675

55 .2725

56 .2775

57 .2825

58 .2875

59 .2925

60 .2975

61 220.3025

62 .3075

63 .3125

64 .3175

65 .3225

66 .3275

67 .3325

68 .3375

69 .3425

70 .3475

71 .3525

72 .3575

73 .3625

74 .3675

75 .3725

76 .3775

77 .3825

78 .3875

79 .3925

80 .3975

81 220.4025

82 .4075

83 .4125

84 .4175

85 .4225

86 .4275

87 .4325

88 .4375

89 .4425

90 .4475

91 .4525

92 .4575

93 .4625

94 .4675

95 .4725

96 .4775

97 .4825

98 .4875

99 .4925

100 .4975

101 220.5025

102 .5075

103 .5125

104 .5175

105 .5225

106 .5275

107 .5325

108 .5375

109 .5425

110 .5475

111 .5525

112 .5575

113 .5625

114 .5675

115 .5725

116 .5775

117 .5825

118 .5875

119 .5925

120 .5975

121 220.6025

122 .6075

123 .6125

124 .6175

125 .6225

126 .6275

127 .6325

128 .6375

129 .6425

130 .6475

131 .6525

132 .6575

133 .6625

134 .6675

135 .6725

136 .6775

137 .6825

138 .6875

139 .6925

140 .6975

141 220.7025

142 .7075

143 .7125

144 .7175

145 .7225

146 .7275

147 .7325

148 .7375

149 .7425

150 .7475

151 .7525

152 .7575

153 .7625

154 .7675

155 .7725

156 .7775

157 .7825

158 .7875

159 .7925

160 .7975

161 220.8025

162 .8075

163 .8125

164 .8175

165 .8225

166 .8275

167 .8325

168 .8375

169 .8425

170 .8475

171 .8525

172 .8575

173 .8625

174 .8675

175 .8725

176 .8775

177 .8825

178 .8875

179 .8925

180 .8975

181 220.9025

182 .9075

183 .9125

184 .9175

185 .9225

186 .9275

187 .9325

188 .9375

189 .9425

190 .9475

191 .9525

192 .9575

193 .9625

194 .9675

195 .9725

196 .9775

197 .9825

198 .9875

199 .9925

200 220.9975

(b) The 200 channels are divided into three sub-bands as follows:

Channel No. Sub-band Frequencies (MHz)

1-40 A 220.0025-220.1975/221.0025-221.1975

41-160 C 220.2025-220.7975/221.2025-221.7975

161-200 B 220.8025-220.9975/221.8025-221.9975

(c) U.S./Mexico border area. (1) Channels 16-30, 45-60, 76-90, 106-120, 136-145, 156-165, 178-194 are available for primary use within the United States within 120 km (74.6 mi) of the Mexican border, subject to the power and antenna height conditions specified in § 90.729 and the use restrictions specified in §§ 90.717-90.721.

(2) Channels 195-200 are available to both the United States and Mexico in the border area on an unprotected basis. Use is limited to a maximum effective radiated power (ERP) of 2 watts and a maximum antenna height of 6.1 meters (20 ft) above ground.

(3) Channels allotted for primary Mexican use (1-15, 31-45, 61-75, 91-105, 121-135, 146-155, and 166-177) may be used in the border area subject to the condition that the power flux density not exceed−86 dB(W/m 2) at or beyond any point on the border. Stations operating under this provision will be considered secondary and will not be granted protection from harmful interference from stations that have primary use of the frequencies.