[Code of Federal Regulations]

[Title 47, Volume 5]

[Revised as of October 1, 2005]

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

[CITE: 47CFR90.215]



[Page 349-350]

 

                       TITLE 47--TELECOMMUNICATION

 

                         COMMISSION (CONTINUED)

 

PART 90_PRIVATE LAND MOBILE RADIO SERVICES--Table of Contents

 

                  Subpart I_General Technical Standards

 

Sec. 90.215  Transmitter measurements.



    (a) The licensee of each station shall employ a suitable procedure 

to determine that the carrier frequency of each transmitter authorized 

to operate with an output power in excess of two watts is maintained 

within the tolerence prescribed in Sec. 90.213. This determination 

shall be made, and the results entered in the station records in 

accordance with the following:

    (1) When the transmitter is initially installed;

    (2) When any change is made in the transmitter which may affect the 

carrier frequency or its stability.

    (b) The licensee of each station shall employ a suitable procedure 

to determine that each transmitter authorized to operate with an output 

power in excess of two watts does not exceed the maximum figure 

specified on the current station authorization. On authorizations 

stating only the input power to the final radiofrequency stage, the 

maximum permissible output power is 75 percent for frequencies below 25 

MHz and 60 percent of the input power for frequencies above 25 MHz. If a 

non-DC final radiofrequency stage is utilized, then the output power 

shall not exceed 75 percent of the input power. This determination shall 

be made, and the results thereof entered into the station records, in 

accordance with the following:

    (1) When the transmitter is initially installed;

    (2) When any change is made in the transmitter which may increase 

the transmitter power input.

    (c) The licensee of each station shall employ a suitable procedure 

to determine that the modulation of each transmitter, which is 

authorized to operate with an output power in excess of two watts, does 

not exceed the limits specified in this part. This determination shall 

be made and the following results entered in the station records, in 

accordance with the following:

    (1) When the transmitter is initially installed;

    (2) When any change is made in the transmitter which may affect the 

modulation characteristics.



[[Page 350]]



    (d) The determinations required by paragraphs (a), (b), and (c) of 

this section may, at the opinion of the licensee, be made by a qualified 

engineering measurement service, in which case the required record 

entries shall show the name and address of the engineering measurement 

service as well as the name of the person making the measurements.

    (e) In the case of mobile transmitters, the determinations required 

by paragraphs (a) and (c) of this section may be made at a test or 

service bench: Provided, That the measurements are made under load 

conditions equivalent to actual operating conditions; and provided 

further, that after installation in the mobile unit the transmitter is 

given a routine check to determine that it is capable of being received 

satisfactorly by an appropriate receiver.