Sec. 95.859  Antennas.

    (a) The CTS antenna includes the radiating element(s), tower, 
supports and all appurtenances. No CTS antenna shall be elevated higher 
than necessary to assure adequate service.
    (1) A CTS antenna located within a boundary line 16 km (10 miles) 
outside the Grade B contour of a TV Channel 13 station may not exceed a 
maximum Height Above Average Terrain (HAAT), as defined in Sec. 90.309, 
and maximum ERP as set forth below:

                                                                        
------------------------------------------------------------------------
                             HAAT                               Maximum 
--------------------------------------------------------------    ERP   
                 (m)                           (feet)           (watts) 
------------------------------------------------------------------------
0-36.6..............................  0-120..................     20.0  
36.6-73.2...........................  121-240................      5.0  
73.3-152.4..........................  241-500................      1.2  
152.5-304.8.........................  501-1000...............      0.29 
304.9-609.6.........................  1001-2000..............      0.073
------------------------------------------------------------------------

    (2) A CTS antenna located beyond a boundary line 16 km (10 miles) 
outside the Grade B contour of a TV Channel 13 station may not exceed a 
maximum HAAT, as defined in Sec. 90.309, and maximum ERP as set forth 
below:

                                                                        
------------------------------------------------------------------------
                             HAAT                               Maximum 
--------------------------------------------------------------    ERP   
                 (m)                           (feet)           (watts) 
------------------------------------------------------------------------
0-152.4.............................  0-500..................       20.0
152.5-304.8.........................  501-1000...............        5.0
304.9-609.6.........................  1001-2000..............        1.2
------------------------------------------------------------------------

    (b) No CTS antenna shall be located within 61 m (200 feet) of a 
residential dwelling unless the IVDS system licensee has reduced power 
such that the field strength of the CTS antenna at the residential 
dwelling does not increase relative to the field strength of the CTS 
antenna at 61 m or obtained the written concurrence of the resident(s) 
within 61 m of the CTS antenna. The written concurrence must be kept as 
part of the IVDS system authorization.
    (c) The RTU may be connected to an external antenna not more than 
6.1 m (20 feet) above ground or above an existing man-made structure 
(other than an antenna structure). Connectors that are used to connect 
RTUs to an external antenna shall not be of the types generally known as 
``F-type'' or ``BNC type.'' Use of an external antenna is subject to 
Sec. 95.861.
[57 1997 FR 36373 , Aug. 13, 1992]