Cape Race LORAN-C transmitter

Cape Race LORAN-C Mast (1st)
Location within Newfoundland
Record height
Tallest in Canada from 1965 to 1976
Preceded by	CHCH Television Tower
Surpassed by	CN Tower
General information
Status	Destroyed
Type	Mast radiator insulated against ground
Location	Cape Race, Newfoundland and Labrador, Canada
Coordinates	46°46′32.58″N 53°10′27.65″W / 46.7757167°N 53.1743472°W / 46.7757167; -53.1743472 (1st mast)Coordinates: 46°46′32.58″N 53°10′27.65″W / 46.7757167°N 53.1743472°W / 46.7757167; -53.1743472 (1st mast)
Completed	1965
Destroyed	February 2, 1993
Height	411.48 m (1,350.00 ft)
Design and construction
Main contractor	US Coast Guard

The Cape Race LORAN-C transmitter is a LORAN-C transmitter at Cape Race, Newfoundland and Labrador, on Canada's eastern seaboard.

The Cape Race LORAN-C transmitter was used as an antenna tower until February 2, 1993. It was a 411.48 m (1350 ft) tall guyed mast, built in 1965. This mast was the tallest structure in Canada until the construction of the CN Tower in Toronto, and remained the second-tallest structure until its collapse on February 2, 1993. The collapse was the result of a fatigue failure of the eyebolt head in a compression cone insulator on a structural guy-wire. This failure caused swing-in damage that resulted in the tower's collapse. The tower was replaced by a 260.3 meter (854 ft) tall guyed mast, insulated against the ground.

The Cape Race LORAN-C transmitter was used until 1993 as part of the LORAN-C Chain GRI 9930 and worked with a transmission power of 1800 kilowatts. Today the Cape Race LORAN-C transmitter acts as the Yankee Secondary Transmitter of the Canadian East Coast LORAN-C chain (GRI 5930) and as the Whiskey Secondary of the Newfoundland East Coast LORAN-C chain (GRI 7270).

The transmission power for the Canadian East Coast LORAN-C chain is 1000 kW, and for the Newfoundland East Coast LORAN-C the transmission power is 500 kW.