Sec.  74.709   Land mobile station protection.

   (a) Stations in the Land Mobile Radio Service, using the following channels
   in the indicated cities will be protected from interference caused by low
   power TV or TV translator stations, and low power TV and TV translator
   stations must accept any interference from stations in the land mobile
   service operating on the following channels:
         City         Channels      Coordinates
                                Latitude  Longitude
   Boston, MA            14, 16 42 °21'24" 071 °03'24"
   Chicago, IL           14, 15 41 °52'28" 087 °38'22"
   Cleveland, OH         14, 15 41 °29'51" 081 °41'50"
   Dallas, TX                16 32 °47'09" 096 °47'37"
   Detroit, MI           15, 16 42 °19'48" 083 °02'57"
   Houston, TX               17 29 °45'26" 095 °21'37"
   Los Angeles, CA   14, 16, 20 34 °03'15" 118 °18'28"
   Miami, FL                 14 25 °46'37" 080 °11'32"
   New York, NY      14, 15, 16 40 °45'06" 073 °59'39"
   Philadelphia, PA      19, 20 39 °56'58" 075 °09'21"
   Pittsburgh, PA        14, 18 40 °26'19" 080 °00'00"
   San Francisco, CA     16, 17 37 °46'39" 122 °24'40"
   Washington, DC        17, 18 38 °53'51" 077 °00'33"

   (b)  The  protected contours for the land mobile radio service are 130
   kilometers  from  the  above  coordinates, except where limited by the
   following:

   (1) If the land mobile channel is the same as the channel in the following
   list,  the  land mobile protected contour excludes the area within 145
   kilometers of the corresponding coordinates from list below. Except if the
   land mobile channel is 15 in New York or Cleveland or 16 in Detroit, the
   land mobile protected contour excludes the area within 95 kilometers of the
   corresponding coordinates from the list below.

   (2) If the land mobile channel is one channel above or below the channel in
   the following list, the land mobile protected contour excludes the area
   within 95 kilometers of the corresponding coordinates from the list below.
          City        Channel     Coordinates
                              Latitude  Longitude
   San Diego, CA           15 32 °41'48" 116 °56'10"
   Waterbury, CT           20 41 °31'02" 073 °01'00"
   Washington, DC          14 38 °57'17" 077 °00'17"
   Washington, DC          20 38 °57'49" 077 °06'18"
   Champaign, IL           15 40 °04'11" 087 °54'45"
   Jacksonville, IL        14 39 °45'52" 090 °30'29"
   Ft. Wayne, IN           15 41 °05'35" 085 °10'42"
   South Bend, IN          16 41 °36'20" 086 °12'44"
   Salisbury, MD           16 38 °24'15" 075 °34'45"
   Mt. Pleasant, MI        14 43 °34'24" 084 °46'21"
   Hanover, NH             15 43 °42'30" 072 °09'16"
   Canton, OH              17 40 °51'04" 081 °16'37"
   Cleveland, OH           19 41 °21'19" 081 °44'24"
   Oxford, OH              14 39 °30'26" 084 °44'09"
   Zanesville, OH          18 39 °55'42" 081 °59'06"
   Elmira-Corning, NY      18 42 °06'20" 076 °52'17"
   Harrisburg, PA          21 40 °20'44" 076 °52'09"
   Johnstown, PA           19 40 °19'47" 078 °53'45"
   Lancaster, PA           15 40 °15'45" 076 °27'49"
   Philadelphia, PA        17 40 °02'30" 075 °14'24"
   Pittsburgh, PA          16 40 °26'46" 079 °57'51"
   Scranton, PA            16 41 °10'58" 075 °52'21"
   Parkersburg, WV         15 39 °20'50" 081 °33'56"
   Madison, WI             15 43 °03'01" 089 °29'15"

   (c) A low power TV or TV translator station application will not be accepted
   if it specifies a site that is within the protected contour of a co-channel
   or first adjacent channel land mobile assignment.

   (d) The low power TV or TV translator station field strength is calculated
   from the proposed effective radiated power (ERP) and the antenna height
   above average terrain (HAAT) in pertinent directions.

   (1) The field strength is calculated using Figure 10c of  Sec. 73.699 (F(50, 10)
   charts) of Part 73 of this chapter.

   (2) A low power TV or TV translator station application will not be accepted
   if it specifies the same channel as one of the land mobile assignments and
   its field strength at the land mobile protected contour exceeds 52 dBu.

   (3) A low power TV or TV translator station application will not be accepted
   if it specifies a channel that is one channel above or below one of the land
   mobile assignments and its field strength at the land mobile protected
   contour exceeds 76 dBu.

   (e) To protect stations in the Offshore Radio Service, a low power TV or TV
   translator station construction permit application will not be accepted if
   it specifies operation on channels 15, 16, 17 or 18 in the following areas.
   West  Longitude  and  North  Latitude are abbreviated as W.L. and N.L.
   respectively.

   (1) On Channel 15: west of 92 °00' W.L.; east of 98 °30' W.L.; and south of a
   line extending due west from 30 °30' N.L., 92 °00' W.L. to 30 °30' N.L., 96 °00'
   W.L.; and then due southwest to 28 °00' N.L., 98 °30' W.L.

   (2) On Channel 16: west of 86 °40' W.L.; east of 96 °30' W.L.; and south of a
   line extending due west from 31 °00' N.L., 86 °40' W.L. to 31 °00' N.L., 95 °00'
   W.L. and then due southwest to 29 °30' N.L., 96 °30' W.L.

   (3) On Channel 17: west of 86 °30' W.L.; east of 96 °00' W.L.; and south of a
   line extending due west from 31 °00' N.L., 86 °30' W.L. to 31 °30' N.L., 94 °00'
   W.L. and then due southwest to 29 °30' N.L., 96 °00' W.L.

   (4) On Channel 18: west of 87 °00' W.L.; east of 95 °00' W.L.; and south of
   31 °00' N.L.

   [ 47 FR 21499 , May 18, 1982, as amended at  50 FR 12027 , Mar. 27, 1985;  50 FR 33942 , Aug. 22, 1985;  69 FR 31906 , June 8, 2004]