sentences:  It used a 1000-kilowatt, 742-foot (226.2 m) guyed mast that was constructed in 1977 and dedicated on August 2, 1978.The station was operated by United States Coast Guard and was located on a 250-acre (1.0 km2) piece of land within the 10,587-acre (42.84 km2) facility.The transmitter was used to guide ships and aircraft up to 1,000 miles (1,600 km) away.