[Code of Federal Regulations]

[Title 47, Volume 2]

[Revised as of October 1, 2004]

From the U.S. Government Printing Office via GPO Access

[CITE: 47CFR24.238]



[Page 240]

 

                       TITLE 47--TELECOMMUNICATION

 

                    CHAPTER I--FEDERAL COMMUNICATIONS

                         COMMISSION (CONTINUED)

 

PART 24_PERSONAL COMMUNICATIONS SERVICES--Table of Contents

 

                         Subpart E_Broadband PCS

 

Sec. 24.238  Emission limitations for Broadband PCS equipment.



    The rules in this section govern the spectral characteristics of 

emissions in the Broadband Personal Communications Service.

    (a) Out of band emissions. The power of any emission outside of the 

authorized operating frequency ranges must be attenuated below the 

transmitting power (P) by a factor of at least 43 + 10 log(P) dB.

    (b) Measurement procedure. Compliance with these rules is based on 

the use of measurement instrumentation employing a resolution bandwidth 

of 1 MHz or greater. However, in the 1 MHz bands immediately outside and 

adjacent to the frequency block a resolution bandwidth of at least one 

percent of the emission bandwidth of the fundamental emission of the 

transmitter may be employed. A narrower resolution bandwidth is 

permitted in all cases to improve measurement accuracy provided the 

measured power is integrated over the full required measurement 

bandwidth (i.e. 1 MHz or 1 percent of emission bandwidth, as specified). 

The emission bandwidth is defined as the width of the signal between two 

points, one below the carrier center frequency and one above the carrier 

center frequency, outside of which all emissions are attenuated at least 

26 dB below the transmitter power.

    (c) Alternative out of band emission limit. Licensees in this 

service may establish an alternative out of band emission limit to be 

used at specified band edge(s) in specified geographical areas, in lieu 

of that set forth in this section, pursuant to a private contractual 

arrangement of all affected licensees and applicants. In this event, 

each party to such contract shall maintain a copy of the contract in 

their station files and disclose it to prospective assignees or 

transferees and, upon request, to the FCC.

    (d) Interference caused by out of band emissions. If any emission 

from a transmitter operating in this service results in interference to 

users of another radio service, the FCC may require a greater 

attenuation of that emission than specified in this section.



[67 FR 77192, Dec. 17, 2002]



   Policies Governing Microwave Relocation From the 1850-1990 MHz Band