Sec. 90.683  EA-based SMR system operations.

    (a) EA-based licensees authorized in the 806-821/851-866 MHz band 
pursuant to Sec. 90.681 may construct and operate base stations using 
any of the base station frequencies identified in their spectrum block 
anywhere within their authorized EA, provided that:
    (1) The EA licensee affords protection, in accordance with 
Sec. 90.621(b), to all previously authorized co-channel stations that 
are not associated with another EA license;
    (2) The EA licensee complies with any rules and international 
agreements that restrict use of frequencies identified in their spectrum 
block, including the provisions of Sec. 90.619 relating to U.S./Canadian 
and U.S./Mexican border areas;
    (3) The EA licensee limits the field strength of its base stations 
at any location on the border of the EA service area in accordance with 
Sec. 90.689;
    (4) The EA licensee notifies the Commission within 30 days of the 
completion of the addition, removal, relocation or modification of any 
of its facilities within the EA. Such notification must be made by 
submitting an FCC Form 600 and must include the appropriate filing fee, 
if any; and
    (5) For any construction or alteration that would exceed the 
requirements of Sec. 17.7 of this chapter, licensees must notify the 
appropriate Regional Office of the Federal Aviation Administration (FAA 
Form 7460-1) and file a request for antenna height clearance and 
obstruction marking and lighting specifications (FCC Form 854) with the 
FCC, WTB, Support Services Branch, Gettysburg, PA 17325.
    (6) Any additional transmitters placed in operation must not have a 
significant environmental effect as defined by Secs. 1.1301 through 
1.1319 of this chapter.
    (b) In the event that the authorization for a previously authorized 
co-channel station within the EA licensee's spectrum block is terminated 
or revoked, the EA licensee's co-channel obligations to such station 
will cease upon deletion of the facility from the Commission's official 
licensing records, and the EA licensee then will be able to construct 
and operate without regard to that previous authorization.
[ 61 FR 6158 , 6159, Feb. 16, 1996, as amended at  62 FR 41216 , July 31, 
1997]