1. (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

2. (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

3. (c) U.S./Mexico border area.

   1. (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. (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. (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.

[56 FR 19603, Apr. 29, 1991, as amended at 57 FR 55148, Nov. 24, 1992]