Cape Race LORAN-C transmitter

Cape Race LORAN-C Mast (1st)
Location within Newfoundland
Record height
Tallest in Canada from 1965 to 1976[I]
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)
Completed	1965
Destroyed	2 February 1993
Height	411.48 m (1,350.00 ft)
Design and construction
Main contractor	US Coast Guard

Cape Race LORAN-C Mast (2nd)
General information
Status	Demolished
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 (2nd mast)
Completed	1993
Destroyed	20 October 2012
Height	260.3 m (854.00 ft)
Design and construction
Main contractor	US Coast Guard

The Cape Race LORAN-C transmitter was a LORAN-C transmitter at Cape Race, Newfoundland and Labrador, Canada.

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 CKX TV-Craig broadcast tower at Hayfield, Manitoba equalled this tower in height when it was erected in 1973.

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. The Cape Race LORAN-C transmitter acted 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 was 1000 kW, and for the Newfoundland East Coast LORAN-C the transmission power was 500 kW. The mast has been demolished.

See also

• List of masts
• List of tallest buildings and structures in Canada

External links

• "Sample Projects". Varcon Inc. Archived from the original on 2011-03-19. Retrieved 2006-11-23.
• Cape Race LORAN-C Transmission Mast (1st), Portugal Cove South - SkyscraperPage.com
• Cape Race LORAN-C Transmission Mast (2nd), Portugal Cove South - SkyscraperPage.com
• LORAN-C Sendemast Cape Race (1965) at Structurae
• LORAN-C Sendemast Cape Race (1993) at Structurae
• Video of the demolition

This page was last edited on 12 December 2023, at 16:33