47 C.F.R. § 22.355
Frequency tolerance.
Cite as 47 C.F.R. § 22.355 (2026)
Except as otherwise provided in this part, the carrier frequency of each transmitter in the Public Mobile Services must be maintained within the tolerances given in Table C-1 of this section.
Table C-1—Frequency Tolerance for Transmitters in the Public Mobile Services
Frequency range (MHz)
Base, fixed
(ppm)
Mobile >3 watts
(ppm)
Mobile
≤3 watts
(ppm)
25 to 50
20.0
20.0
50.0
50 to 450
5.0
5.0
50.0
450 to 512
2.5
5.0
5.0
821 to 896
1.5
2.5
2.5
928 to 929
5.0
n/a
n/a
929 to 960
1.5
n/a
n/a
2110 to 2220
10.0
n/a
n/a
[61 FR 54099, Oct. 17, 1996]