Goto Section: 74.708 | 74.710 | Table of Contents
FCC 74.709
Revised as of October 1, 2007
Goto Year:2006 |
2008
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]
Goto Section: 74.708 | 74.710
Goto Year: 2006 |
2008
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