§ 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
   dBuV/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
   dBuV/m at incumbent licensees' 40.2 kilometer (25-mile) radius
   composite contour specified in § 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 § 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/m2 nor -94 dBW/m2, 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/m2) = 10 log [EIRP/4p(D2], 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 § 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/m2. 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/m2, 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/m2. 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/m2. 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]

   return arrow Back to Top

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.

   return arrow Back to Top