Sec.  101.1333   Interference protection criteria.

   (a) Frequency coordination. All EA licensees are required to coordinate
   their frequency usage with co-channel adjacent area licensees and all other
   affected parties.

   (b) EA licensees are prohibited from exceeding a signal strength of 40
   dB µV/m at their service area boundaries, unless a higher signal strength is
   agreed to by all affected co-channel, adjacent area licensees.

   (c) EA licensees are prohibited from exceeding a signal strength of 40
   dB µV/m at incumbent licensees' 40.2 kilometer (25-mile) radius composite
   contour specified in  Sec. 101.1331(c).

   (d) In general, licensees shall comply with the appropriate coordination
   agreements between the United States and Canada and the United States and
   Mexico  concerning  cross-border sharing and use of the applicable MAS
   frequencies.

   (1) Canada—932.0–932.25 MHz and 941.0–941.25 MHz: 

   (i) Within Lines A, B, C, and D, as defined in  Sec. 1.928(e) of this chapter,
   along the U.S./Canada border, U.S. stations operating in the 932.0–932.25
   MHz and 941.0–941.25 MHz bands are on a secondary basis and may operate
   provided that they shall not transmit a power flux density (PFD) at the
   border greater than −100 dBW/m^2 nor −94 dBW/m^2 , respectively. The U.S.
   has full use of the frequencies in these regions up to the border in the
   bands 932.25–932.50 MHz and 941.25–941.50 MHz, and Canadian stations may
   operate on a secondary basis provided they do not exceed the respective PFDs
   shown above. PFD can be determined using the following formula: PFD (dBW/m^2
   ) = 10 log [EIRP/4Ï€(D^2 ], where EIRP is in watts, D is in meters, and the
   power is relative to an isotropic radiator. The technical parameters are
   also limited by tables 1 and 2:

   Table 1—Maximum Radiated Power
      Class of station      Band MHz   Maximum EIRP  Maximum ERP^1
                                       Watts   dBW   Watts   dBW
   Master                  941.0–941.5  1000      30   600    27.8
   Fixed Remote and Master 932.0–932.5    50      17    30    14.8

   ^1Where ERP = EIRP/1.64.>

   (ii)  Maximum antenna height above average terrain for master stations
   operating at a maximum power shall not exceed 150 meters. Above 150 meters,
   the power of master stations shall be in accordance with following table:

   Table 2—Antenna Height—Power Reduction Table
   Antenna height above average terrain (meters)   EIRP       ERP
                                                 Watts dBW Watts dBW
   Above 305                                       200  23   120 20.8
   Above 275 to 305                                250  24   150 21.8
   Above 245 to 275                                315  25   190 22.8
   Above 215 to 245                                400  26   240 23.8
   Above 180 to 215                                500  27   300 24.8
   Above 150 to 180                                630  28   380 25.8

   Note  to Table 2: This information is from the Arrangement between the
   Federal Communications Commission and the National Telecommunications and
   Information Administration of the United States of America, and Industry
   Canada concerning the use of the bands 932 to 935 MHz and 941 to 944 MHz
   along the United States-Canada border signed in 1994. This agreement also
   lists grandfathered stations that must be protected.

   (2) Canada—928–929 MHz and 952–960 MHz: 

   Between Lines A and B and between Lines C and D, as defined in  Sec. 1.928(e) of
   this chapter, along the U.S./Canada border, U.S. stations operating in the
   928.50–928.75 MHz and 952.50–952.75 MHz bands are on an unprotected basis
   and may operate provided that they shall not transmit a power flux density
   (PFD) at or beyond the border greater than −100 dBW/m^2 . The U.S. has full
   use  of the frequencies in these regions up to the border in the bands
   928.25–928.50 MHz and 952.25–952.50 MHz, and Canadian stations may operate
   on  an  unprotected  basis  provided they do not exceed the PFD above.
   Frequencies in the bands 928.00–928.25 MHz, 928.75–929.00 MHz, 952.00–952.25
   MHz,  and  952.75–952.85  MHz  are available for use on a coordinated,
   first-in-time, shared basis subject to protecting grandfathered stations.
   New stations must provide a minimum of 145 km (90 miles) separation or
   alternatively limit the actual PFD of the proposed station to −100 dBW/m^2 ,
   at the existing co-channel master stations of the other country, or as
   mutually agreed upon on a case-by-case basis. Coordination is not required
   if the PFD at the border is lower than −100 dBW/m^2 . The technical criteria
   are also limited by the following:

   Maximum  EIRP for master stations in the MHz band: 1000 watts (30 dBW)
   952–953

   Maximum EIRP for fixed remote stations or stations in the 928–929 MHz band:
   50 watts (17 dBW) master

   Maximum EIRP for mobile master stations: 25 watts (14 dBW)

   Maximum antenna height above average master or control stations: 152 m at
   1000 watts terrain for EIRP, power derated in accordance with the following
   table:
   Antenna height above
   average terrain (m)  EIRP
          Watts        dBm
   Above 305            200 53
   Above 275 to 305     250 54
   Above 244 to 274     315 55
   Above 214 to 243     400 56
   Above 183 to 213     500 57
   Above 153 to 182     630 58
   Below 152           1000 60

   Note to table in paragraph(d)(2): This information is from the Arrangement
   between  the  Department  of  Communications of Canada and the Federal
   Communications Commission of the United States of America Concerning the Use
   of  the  Bands  928  to  929  MHz  and 952 to 953 MHz along the United
   States-Canada Border signed in 1991. This agreement also lists grandfathered
   stations that must be protected.

   (3) Mexico: 

   Within 113 kilometers of the U.S./Mexico border, U.S. stations operating in
   the 932.0–932.25 MHz and 941.0–941.25 MHz bands are on a secondary basis
   (non-interference to Mexican primary licensees) and may operate provided
   that they shall not transmit a power flux density (PFD) at or beyond the
   border greater than −100 dBW/m^2 . Upon notification from the Commission,
   U.S.  licensees  must  take  proper  measures to eliminate any harmful
   interference caused to Mexican primary assignments. The U.S. has full use of
   the frequencies in these regions up to the border in the bands 932.25–932.50
   MHz and 941.25–941.50 MHz, and Mexican stations may operate on a secondary
   basis (non-interference to U.S. primary licensees) provided they do not
   exceed the PFD shown above. Stations using the 932–932.5 MHz band shall be
   limited to the maximum effective isotropic radiated power of 50 watts (17
   dBW). Stations using the 941–941.5 MHz band shall meet the limits in the
   following table:
   Antenna height above
   average mean sea level (meters)  EIRP
                Watts              dBW
   Above 305                        200 23
   Above 274 to 305                 250 24
   Above 243 to 274                 315 25
   Above 213 to 243                 400 26
   Above 182 to 213                 500 27
   Above 152 to 182                 630 28
   Up to 152                       1000 30

   Note to table in paragraph(d)(3): This information is from the Agreement
   between the Government of the United States of America and the Government of
   the United Mexican States Concerning the Allocation and Use of Frequency
   Bands by Terrestrial Non-Broadcasting Radiocommunication Services Along the
   Common Border, Protocol #6 Concerning the Allotment and Use of Channels in
   the 932–932.5 and 941–941.5 MHz Bands for Fixed Point-to-Multipoint Services
   Along the Common Border signed in 1994.

   [ 65 FR 17450 , Apr. 3, 2000, as amended at  68 FR 4961 , Jan. 31, 2003]

Subpart P—Multichannel Video Distribution and Data Service Rules for the
12.2–12.7 GHz Band

   Source:    69 FR 31746 , June 7, 2004, unless otherwise noted.