Sec. 24.132  Power and antenna height limits.

    (a) Stations transmitting in the 901-902 MHz band are limited to 7 
watts e.r.p.
    (b) Mobile stations transmitting in the 930-931 MHz and 940-941 MHz 
bands are limited to 7 watts e.r.p.
    (c) Base stations transmitting in the 930-931 MHz and 940-941 MHz 
bands are limited to 3500 watts e.r.p. per authorized channel and are 
unlimited in antenna height except as provided in paragraph (d) of this 
section.
    (d)(1) MTA and regional base stations located between 200 kilometers 
(124 miles) and 80 kilometers (50 miles) from their licensed service 
area border are limited to the power levels in the following table:

                                                                        
------------------------------------------------------------------------
Antenna HAAT in meters (feet) (see Sec.                                 
     24.53 for HAAT HAAT calculation         Effective radiated power   
                method)                          (e.r.p.) (watts)       
------------------------------------------------------------------------
183 (600) and below....................  3500                           
183 (600) to 208 (682).................  3500 to 2584                   
208 (682) to 236 (775).................  2584 to 1883                   
236 (775) to 268 (880).................  1883 to 1372                   
268 (880) to 305 (1000)................  1372 to 1000                   
305 (1000) to 346 (1137)...............  1000 to 729                    
346 (1137) to 394 (1292)...............  729 to 531                     
394 (1292) to 447 (1468)...............  531 to 387                     
447 (1468) to 508 (1668)...............  387 to 282                     
508 (1668) to 578 (1895)...............  282 to 206                     
578 (1895) to 656 (2154)...............  206 to 150                     
656 (2154) to 746 (2447)...............  150 to 109                     
746 (2447) to 848 (2781)...............  109 to 80                      
848 (2781) to 963 (3160)...............  80 to 58                       
963 (3160) to 1094 (3590)..............  58 to 42                       
1094 (3590) to 1244 (4080).............  42 to 31                       
1244 (4080) to 1413 (4636).............  31 to 22                       
Above 1413 (4636)......................  16                             
------------------------------------------------------------------------

    (2) For heights between the values listed in the table, linear 
interpolation shall be used to determine maximum e.r.p.
    (e) MTA, BTA and regional base stations located less than 80 
kilometers

[[Page 245]]

(50 miles) from the licensed service area border must limit their 
effective radiated power in accordance with the following formula:

PW = 0.0175  x  dkm**6.6666  x  hm**-3.1997
PW is effective radiated power in watts
dkm is distance in kilometers
hm is antenna HAAT in meters; see Sec. 24.53 for HAAT0 calculation 
          method

    (f) All power levels specified in this section are expressed in 
terms of the maximum power, averaged over a 100 millisecond interval, 
when measured with instrumentation calibrated in terms of an rms-
equivalent voltage with a resolution bandwidth equal to or greater than 
the authorized bandwidth.
    (g) Additionally, PCS stations will be subject to any power limits 
imposed by international agreements.
[ 58 FR 59183 , Nov. 8, 1993;  59 FR 15269 , Mar. 31, 1994, as amended at  62 FR 27511 , May 20, 1997]