Sec. 23.16  Frequency tolerances.

    (a) The frequency tolerance for stations in the International Fixed 
Public Radiocommunications Services shall be maintained as prescribed in 
the following table:

                                                                        
------------------------------------------------------------------------
                                                   Tolerances applicable
                                                    to new transmitters 
                                                      installed after   
                                                    September 19, 1973, 
                                                        and to all      
                 Frequency range                    transmitters after  
                                                    September 19, 1975  
                                                 -----------------------
                                                               Parts per
                                                    Percent     million 
------------------------------------------------------------------------
10 to 50 kHz....................................          .1        1000
50 to 535 kHz...................................         .02         200
1605 to 30,000 kHz..............................       .0015          15
30 to 50 MHz....................................        .002          20
50 to 000 MHz...................................       .0005           5
1000 to 1850 MHz................................        .001          10
1850 to 1990 MHz................................         .02         200
1990 to 2500 MHz................................        .001          10
2500 to 10,500 MHz..............................         .03         300
10,500 to 40,000 MHz............................         .05         500
------------------------------------------------------------------------

    (b) Until September 19, 1975, the frequency tolerance of 
transmitters installed at stations in these services before September 
19, 1973, and operating within the frequency bands set forth below, 
shall be maintained within the following limits:

                                                                        
------------------------------------------------------------------------
                                                               Tolerance
                       Frequency range                         (percent)
------------------------------------------------------------------------
10 to 50 kHz................................................         0.1
50 to 535 kHz...............................................        0.02
1605 to 30000 kHz...........................................       0.003
Above 30 MHz................................................       (\1\)
------------------------------------------------------------------------
\1\ As set forth in the radio station license.                          

[[Page 220]]

                                                                        

[ 38 FR 27386 , Oct. 3, 1973]