[Code of Federal Regulations]

[Title 47, Volume 5]

[Revised as of October 1, 2006]

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

[CITE: 47CFR87.145]



[Page 199-200]

 

                       TITLE 47--TELECOMMUNICATION

 

        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)

 

PART 87_AVIATION SERVICES--Table of Contents

 

                    Subpart D_Technical Requirements

 

Sec.  87.145  Acceptability of transmitters for licensing.



    (a) Each transmitter must be certificated for use in these services, 

except as listed in paragraph (c) of this section. However, aircraft 

stations which transmit on maritime mobile frequencies must use 

transmitters certificated for use in ship stations in accordance with 

part 80 of this chapter. Certification under part 80 is not required for 

aircraft earth stations transmitting on maritime mobile-satellite 

frequencies. Such stations must be certificated under part 87.

    (b) Some radio equipment installed on air carrier aircraft must meet 

the requirements of the Commission and the requirements of the FAA. The 

FAA requirements may be obtained from the FAA, Aircraft Maintenance 

Division,



[[Page 200]]



800 Independence Ave., SW., Washington, DC 20591.

    (c) The equipment listed below is exempted from certification. The 

operation of transmitters which have not been certificated must not 

result in harmful interference due to the failure of those transmitters 

to comply with technical standards of this subpart.

    (1) Flight test station transmitters for limited periods where 

justified.

    (2) U.S. Government transmitters furnished in the performance of a 

U.S. Government contract if the use of certificated equipment would 

increase the cost of the contract or if the transmitter will be 

incorporated in the finished product. However, such equipment must meet 

the technical standards contained in this subpart.

    (3) ELTs verified in accordance with Sec.  87.147(e).

    (4) Signal generators when used as radionavigation land test 

stations (MTF).

    (d) Aircraft earth stations must correct their transmit frequencies 

for Doppler effect relative to the satellite. The transmitted signal may 

not deviate more than 335 Hz from the desired transmit frequency. (This 

is a root sum square error which assumes zero error for the received 

ground earth station signal and includes the AES transmit/receive 

frequency reference error and the AES automatic frequency control 

residual errors.) The applicant must attest that the equipment provides 

adequate Doppler effect compensation and where applicable, that 

measurements have been made that demonstrate compliance. Submission of 

data demonstrating compliance is not required unless requested by the 

Commission.



[63 FR 36607, July 7, 1998, as amended at 69 FR 32881, June 14, 2004]