Sec.  90.311   Frequencies.

   (a) Except as provided for in  Sec. 90.315 and except for those frequencies
   allocated to services in part 22 of this chapter (see  Sec.  Sec. 22.591, 22.621,
   22.651, and 22.1007 of this chapter) the following frequencies in the band
   470–512 MHz may be assigned as indicated in the table below. The first and
   last assignable frequencies are shown. Assignable frequencies occur in
   increments of 6.25 kHz. The separation between base and mobile transmit
   frequencies is 3 MHz for two frequency operation.
   Channel Assignment Urbanized Area General access pool
   Base and mobile Mobile
   14 Boston, MA
   Chicago, IL
   Cleveland, OH
   Miami, FL
   New York/N.E. NJ
   Pittsburgh, PA 470.30625 to 472.99375 473.30625 to 475.99375
      Los Angeles, CA 470.05625 to 472.99375 473.05625 to 475.99375
   15 Chicago, IL
   Cleveland, OH
   Detroit, MI
   New York/N.E. NJ 476.30625 to 478.99375 479.30625 to 481.99375
   16 Boston, MA
   Dallas/Fort Worth, TX
   Detroit, MI
   San Francisco/Oakland, CA 482.30625 to 484.99375 485.30625 to 487.99375
      Los Angeles, CA (Use is restricted to Public Safety Pool eligibles)
   482.00625 to 484.99375 485.00625 to 487.99375
   17 Houston, TX
   San Francisco/Oakland, CA
   Washington, DC/MD/VA 488.30625 to 490.99375 491.30625 to 493.99375
   18 Pittsburgh, PA
   Washington, DC/MD/VA 494.30625 to 496.99375 497.30625 to 499.99375
   19 Philadelphia, PA 500.30625 to 502.99375 503.30625 to 505.99375
   20 Los Angeles, CA 506.13125 to 508.99375 509.13125 to 511.99375
      Philadelphia, PA 506.30625 to 508.99375 509.30625 to 511.99375

   (1) Channel availability in the General Access Pool in any of the urbanized
   areas referred to in the table depends on whether that channel is presently
   assigned to one of the following categories of users:

   (i) Public safety (as defined in  Sec. 90.20(a));

   (ii) Power and telephone maintenance licensees (as defined in  Sec. 90.7);

   (iii) Special industrial licensees (as defined in  Sec. 90.7);

   (iv) Business licensees (as defined in  Sec. 90.35(a));

   (v) Petroleum, forest products, and manufacturers licensees (as defined in
    Sec. 90.7);

   (vi) Railroad, motor carrier, and automobile emergency licensees (as defined
   in  Sec. 90.7); and

   (vii) Taxicab licensees (as defined in  Sec. 90.7).

   (2) If assigned, subsequent authorizations will only be granted to users
   from the same category. If unassigned, or should a channel subsequently
   become unassigned, it will be treated as available in the General Access
   Pool.

   (3) Normally, each channel should be substantially loaded in accordance with
   the standards set out in  Sec. 90.313.

   (4) The following frequencies will be authorized a maximum bandwidth of 6
   kHz.
   Channel Frequency
   14      470.30625
           475.99375
   15      476.30625
           481.99375
   16      482.30625
           487.99375
   17      488.30625
           493.99375
   18      494.30625
           499.99375
   19      500.30625
           505.99375
   20      506.30625
           511.99375

   (b) [Reserved]

   [ 43 FR 54791 , Nov. 22, 1978, as amended at  44 FR 49692 , Aug. 24, 1979;  51 FR 4362 , Feb. 4, 1986;  60 FR 37272 , July 19, 1995;  62 FR 2041 , Jan. 15, 1997;
    62 FR 18932 , Apr. 17, 1997;  64 FR 36270 , July 6, 1999]