§ 24.135   Frequency stability.

   (a) The frequency stability of the transmitter shall be maintained within
   ±0.0001  percent  (±1  ppm) of the center frequency over a temperature
   variation of −30 °Celsius to + 50 °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 °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.

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Subpart E—Broadband PCS

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

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