[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: 47CFR90.219]



[Page 350-351]

 

                       TITLE 47--TELECOMMUNICATION

 

                         COMMISSION (CONTINUED)

 

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

 

                  Subpart I_General Technical Standards

 

Sec. 90.219  Use of signal boosters.



    Licensees authorized to operate radio systems in the frequency bands 

above 150 MHz may employ signal boosters at fixed locations in 

accordance with the following criteria:

    (a) The amplified signal is retransmitted only on the exact 

frequency(ies) of the originating base, fixed, mobile, or portable 

station(s). The booster will fill in only weak signal areas and cannot 

extend the system's normal signal coverage area.

    (b) Class A narrowband signal boosters must be equipped with 

automatic gain control circuitry which will limit the total effective 

radiated power (ERP) of the unit to a maximum of 5 watts under all 

conditions. Class B broadband signal boosters are limited to 5 watts ERP 

for each authorized frequency that the booster is designed to amplify.

    (c) Class A narrowband boosters must meet the out-of-band emission 

limits of Sec. 90.209 for each narrowband channel that the booster is 

designed to amplify. Class B broadband signal boosters must meet the 

emission limits of Sec. 90.209 for frequencies outside of the booster's 

design passband.

    (d) Class B broadband signal boosters are permitted to be used only 

in confined or indoor areas such as buildings, tunnels, underground 

areas, etc., or in remote areas, i.e., areas where there is little or no 

risk of interference to other users.



[[Page 351]]



    (e) The licensee is given authority to operate signal boosters 

without separate authorization from the Commission. Certificated 

equipment must be employed and the licensee must ensure that all 

applicable rule requirements are met.

    (f) Licensees employing either Class A narrowband or Class B 

broadband signal boosters as defined in Sec. 90.7 are responsible for 

correcting any harmful interference that the equipment may cause to 

other systems. Normal co-channel transmissions will not be considered as 

harmful interference. Licensees will be required to resolve interference 

problems pursuant to Sec. 90.173(b).



[61 FR 31052, June 19, 1996, as amended at 63 FR 36610, July 7, 1998]