Sec. 24.135  Frequency stability.

    (a) The frequency stability of the transmitter shall be maintained 
within &177; 0.0001 percent (&177; 1 ppm) of the center 
frequency over a temperature variation of -30 deg. Celsius to +50 deg. 
Celsius at normal supply voltage, and over a variation in the primary 
supply voltage of 85 percent to 115 percent of the rated supply voltage 
at a temperature of 20 deg. Celsius.
    (b) For battery operated equipment, the equipment tests shall be 
performed using a new battery without any further requirement to vary 
supply voltage.
    (c) It is acceptable for a transmitter to meet this frequency 
stability requirement over a narrower temperature range provided the 
transmitter ceases to function before it exceeds these frequency 
stability limits.

[[Page 246]]

                        Subpart E--Broadband PCS

    Source:   59 FR 32854 , June 24, 1994, unless otherwise noted.