Statutes, codes, and regulations
Code of Federal Regulations
Title 47 - TELECOMMUNICATIONChapter I - FEDERAL COMMUNICATIONS COMMISSIONSubchapter D - SAFETY AND SPECIAL RADIO SERVICESPart 90 - PRIVATE LAND MOBILE RADIO SERVICES
Subpart K - STANDARDS FOR SPECIAL FREQUENCIES OR FREQUENCY BANDS
Section 90.273 - Availability and use of frequencies in the 421-430 MHz band

47 C.F.R. § 90.273

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Current through October 31, 2024
Section 90.273 - Availability and use of frequencies in the 421-430 MHz band

The frequency bands 422.1875-425.4875 MHz and 427.1875-429.9875 MHz are available for use in the Detroit, Michigan and Cleveland, Ohio areas. The bands 423.8125-425.4875 MHz and 428.8125-429.9875 MHz are available for use in the Buffalo, New York area. Sections 90.273 through 90.281 address the specific rules applicable to these bands. Use of these bands is also subject to the general technical standards and application procedures contained in other subparts of part 90. The technical standards applicable in this band are the same as those contained in subpart I of part 90 for the 450-470 MHz band. Private land mobile use of these frequencies is subject to accepting any interference from Federal Government radiolocation operations.

(a) The following tables list frequencies available for assignment in the Public Safety and Industrial/Business Pools as indicated. In the tables, the Public Safety Pool frequencies are denoted as "PS" and the Industrial/Business Pool frequencies are denoted as "IB." The frequencies 422.19375 MHz through 424.99375 MHz are paired with frequencies 427.19375 MHz through 429.99375 MHz, respectively. Only the lower half of each frequency pair, available for base station operation, is listed in the tables. Corresponding mobile and control station frequencies are 5 MHz higher than the base station frequency. The frequencies 425.000 through 425.48125 are unpaired and are available for either single frequency dispatch or paging operations.

Table 1-Channels Available in Detroit and Cleveland Areas Only

Frequency (MHz)Pool in which assigned
Paired channels:
422.19375 *IB
422.200IB
422.20625 *IB
422.21250IB
422.21875 *IB
422.225IB
422.23125 *IB
422.23750IB
422.24375 *IB
422.250IB
422.25625 *IB
422.26250IB
422.26875 *IB
422.275IB
422.28125 *IB
422.28750IB
422.29375 *IB
422.300IB
422.30625 *IB
422.31250IB
422.31875 *IB
422.325IB
422.33125 *IB
422.33750IB
422.34375 *IB
422.350IB
422.35625 *IB
422.36250IB
422.36875 *IB
422.375IB
422.38125 *IB
422.38750IB
422.39375 *IB
422.400IB
422.40625 *IB
422.41250IB
422.41875 *IB
422.425IB
422.43125 *IB
422.43750IB
422.44375 *IB
422.450IB
422.45625 *IB
422.46250IB
422.46875 *IB
422.475IB
422.48125 *IB
422.48750IB
422.49375 *IB
422.500IB
422.50625 *IB
422.51250IB
422.51875 *IB
422.525IB
422.53125 *IB
422.53750IB
422.54375 *IB
422.550IB
422.55625 *IB
422.56250IB
422.56875 *IB
422.575IB
422.58125 *IB
422.58750IB
422.59375 *IB
422.600IB
422.60625 *IB
422.61250IB
422.61875 *IB
422.625IB
422.63125 *IB
422.63750IB
422.64375 *IB
422.650IB
422.65625 *IB
422.66250IB
422.66875 *IB
422.675IB
422.68125 *IB
422.68750IB
422.69375 *IB
422.700IB
422.70625 *IB
422.71250IB
422.71875 *IB
422.725IB
422.73125 *IB
422.73750IB
422.74375 *IB
422.750IB
422.75625 *IB
422.76250IB
422.76875 *IB
422.775IB
422.78125 *IB
422.78750IB
422.79375 *IB
422.800IB
422.80625 *IB
422.81250IB
422.81875 *IB
422.825IB
422.83125 *IB
422.83750IB
422.84375 *IB
422.850IB
422.85625 *IB
422.86250IB
422.86875 *IB
422.875IB
422.88125 *IB
422.88750IB
422.89375 *IB
422.900IB
422.90625 *IB
422.91250IB
422.91875 *IB
422.925IB
422.93125 *IB
422.93750IB
422.94375 *IB
422.950IB
422.95625 *IB
422.96250IB
422.96875 *IB
422.975IB
422.98125 *IB
422.98750IB
422.99375 *IB
423.000PS
423.00625 *PS
423.01250PS
423.01875 *PS
423.025PS
423.03125 *PS
423.03750PS
423.04375 *PS
423.050PS
423.05625 *PS
423.06250PS
423.06875 *PS
423.075PS
423.08125 *PS
423.08750PS
423.09375 *PS
423.100PS
423.10625 *PS
423.11250PS
423.11875 *PS
423.125PS
423.13125 *PS
423.13750PS
423.14375 *PS
423.150PS
423.15625 *PS
423.16250PS
423.16875 *PS
423.175PS
423.18125 *PS
423.18750PS
423.19375 *PS
423.200PS
423.20625 *PS
423.21250PS
423.21875 *PS
423.225PS
423.23125 *PS
423.23750PS
423.24375 *PS
423.250PS
423.25625 *PS
423.26250PS
423.26875 *PS
423.275PS
423.28125 *PS
423.28750PS
423.29375 *PS
423.300PS
423.30625 *PS
423.31250PS
423.31875 *PS
423.325PS
423.33125 *PS
423.33750PS
423.34375 *PS
423.350PS
423.35625 *PS
423.36250PS
423.36875 *PS
423.375PS
423.38125 *PS
423.38750PS
423.39375 *PS
423.400PS
423.40625 *PS
423.41250PS
423.41875 *PS
423.425PS
423.43125 *PS
423.43750PS
423.44375 *PS
423.450PS
423.45625 *PS
423.46250PS
423.46875 *PS
423.475PS
423.48125 *PS
423.48750PS
423.49375 *PS
423.500PS
423.50625 *PS
423.51250PS
423.51875 *PS
423.525PS
423.53125 *PS
423.53750PS
423.54375 *PS
423.550PS
423.55625 *PS
423.56250PS
423.56875 *PS
423.575PS
423.58125 *PS
423.58750PS
423.59375 *PS
423.600PS
423.60625 *PS
423.61250PS
423.61875 *PS
423.625PS
423.63125 *PS
423.63750PS
423.64375 *PS
423.650PS
423.65625 *PS
423.66250PS
423.66875 *PS
423.675PS
423.68125 *PS
423.68750PS
423.69375 *PS
423.700PS
423.70625 *PS
423.71250PS
423.71875 *PS
423.725PS
423.73125 *PS
423.73750PS
423.74375 *PS
423.750PS
423.75625 *PS
423.76250PS
423.76875 *PS
423.775PS
423.78125 *PS
423.78750PS
423.79375 *PS
423.800PS
423.80625 *PS

* This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

Table 2-Channels Available in Buffalo, Detroit and Cleveland Areas

Frequency (MHz)Pool in which assigned
Paired channels:
423.81875 *PS
423.825PS
423.83125 *PS
423.83750PS
423.84375 *PS
423.850PS
423.85625 *PS
423.86250PS
423.86875 *PS
423.875PS
423.88125 *PS
423.88750PS
423.89375 *PS
423.900PS
423.90625 *PS
423.91250PS
423.91875 *PS
423.925PS
423.93125 *PS
423.93750PS
423.94375 *PS
423.950PS
423.95625 *PS
423.96250PS
423.96875 *PS
423.975PS
423.98125 *PS
423.98750PS
423.99375 *PS
424.000PS
424.00625 *PS
424.01250PS
424.01875 *PS
424.025PS
424.03125 *PS
424.03750PS
424.04375 *PS
424.050PS
424.05625 *PS
424.06250PS
424.06875 *PS
424.075PS
424.08125 *PS
424.08750PS
424.09375 *PS
424.100PS
424.10625 *PS
424.11250PS
424.11875 *PS
424.125PS
424.13125 *PS
424.13750PS
424.14375 *PS
424.150PS
424.15625 *PS
424.16250PS
424.16875 *PS
424.175PS
424.18125 *PS
424.18750PS
424.19375 *PS
424.200PS
424.20625 *PS
424.21250PS
424.21875 *PS
424.225PS
424.23125 *PS
424.23750PS
424.24375 *PS
424.250PS
424.25625 *PS
424.26250PS
424.26875 *PS
424.275PS
424.28125 *PS
424.28750PS
424.29375 *PS
424.300PS
424.30625 *PS
424.31250PS
424.31875 *PS
424.325PS
424.33125 *PS
424.33750PS
424.34375 *PS
424.350PS
424.35625 *PS
424.36250PS
424.36875 *PS
424.375PS
424.38125 *PS
424.38750PS
424.39375 *PS
424.400IB
424.40625 *IB
424.41250IB
424.41875 *IB
424.425IB
424.43125 *IB
424.43750IB
424.44375 *IB
424.450IB
424.45625 *IB
424.46250IB
424.46875 *IB
424.475IB
424.48125 *IB
424.48750IB
424.49375 *IB
424.500IB
424.50625 *IB
424.51250IB
424.51875 *IB
424.525IB
424.53125 *IB
424.53750IB
424.54375 *IB
424.550IB
424.55625 *IB
424.56250IB
424.56875 *IB
424.575IB
424.58125 *IB
424.58750IB
424.59375 *IB
424.600IB
424.60625 *IB
424.61250IB
424.61875 *IB
424.625IB
424.63125 *IB
424.63750IB
424.64375 *IB
424.650IB
424.65625 *IB
424.66250IB
424.66875 *IB
424.675IB
424.68125 *IB
424.68750IB
424.69375 *IB
424.700IB
424.70625 *IB
424.71250IB
424.71875 *IB
424.725IB
424.73125 *IB
424.73750IB
424.74375 *IB
424.750IB
424.75625 *IB
424.76250IB
424.76875 *IB
424.775IB
424.78125 *IB
424.78750IB
424.79375 *IB
424.800IB
424.80625 *IB
424.81250IB
424.81875 *IB
424.825IB
424.83125 *IB
424.83750IB
424.84375 *IB
424.850IB
424.85625 *IB
424.86250IB
424.86875 *IB
424.875IB
424.88125 *IB
424.88750IB
424.89375 *IB
424.900IB
424.90625 *IB
424.91250IB
424.91875 *IB
424.925IB
424.93125 *IB
424.93750IB
424.94375 *IB
424.950IB
424.95625 *IB
424.96250IB
424.96875 *IB
424.975IB
424.98125 *IB
424.98750IB
424.99375 *IB
Single channels:
425.000IB
425.00625 *IB
425.01250IB
425.01875 *IB
425.025IB
425.03125 *IB
425.03750IB
425.04375 *IB
425.050IB
425.05625 *IB
425.06250IB
425.06875 *IB
425.075IB
425.08125 *IB
425.08750IB
425.09375 *IB
425.100IB
425.10625 *IB
425.11250IB
425.11875 *IB
425.125IB
425.13125 *IB
425.13750IB
425.14375 *IB
425.150IB
425.15625 *IB
425.16250IB
425.16875 *IB
425.175IB
425.18125 *IB
425.18750IB
425.19375 *IB
425.200IB
425.20625 *IB
425.21250IB
425.21875 *IB
425.225IB
425.23125 *IB
425.23750IB
425.24375 *IB
425.250PS
425.25625 *PS
425.26250PS
425.26875 *PS
425.275PS
425.28125 *PS
425.28750PS
425.29375 *PS
425.300PS
425.30625 *PS
425.31250PS
425.31875 *PS
425.325PS
425.33125 *PS
425.33750PS
425.34375 *PS
425.350PS
425.35625 *PS
425.36250PS
425.36875 *PS
425.375PS
425.38125 *PS
425.38750PS
425.39375 *PS
425.400PS
425.40625 *PS
425.41250PS
425.41875 *PS
425.425PS
425.43125 *PS
425.43750PS
425.44375 *PS
425.450PS
425.45625 *PS
425.46250PS
425.46875 *PS
425.475PS
425.48125 *PS

* This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

(b) [Reserved]
(c) Base or control stations shall be located within 48 km (30 miles) of the center of Buffalo or 80 km (50 miles) of the center of Detroit. In Cleveland, base or control stations will be allowed at locations north of line A that are within 48 km (30 miles) of the city center. In addition, low power (2 watts or less) base stations may locate within 80 km (50 miles) of the center of Buffalo. The following coordinates shall be used for the centers of these areas (coordinates are referenced to North American Datum 1983 (NAD83)):

Buffalo, NY42°52'52.2" North latitude.
78°52'20.1" West longitude.
Cleveland, OH41°29'51.2" North latitude.
81°41'49.5" West longitude.
Detroit, MI42°19'48.1" North latitude.
83°02'56.7" West longitude.

(d) Mobile operation shall be confined to within 80 km (50 miles) of the centers of Detroit, Cleveland, or Buffalo.

47 C.F.R. §90.273

52 FR 6156, Mar. 2, 1987, as amended at 54 FR 38681, Sept. 20, 1989; 58 FR 31476, June 3, 1993; 58 FR 44957, Aug. 25, 1993; 60 FR 37269, July 19, 1995; 61 FR 6576, Feb. 21, 1996; 62 FR 18929, Apr. 17, 1997; 63 FR 68965, Dec. 14, 1998