Communicators for High-Noise-Level Environments.
HARRY DIAMOND LABS ADELPHI MD
Pagination or Media Count:
At the request of the U.S. Geological Survey, the feasibility of equipping workers with a two-way communications system built into a construction hard hat for use in an extremely high ambient noise level has been investigated. As a result, several systems were tested on an offshore oil platform in the Gulf of Mexico. The investigation indicates that a simple modification of a commercial low-power, frequency modulated system operating in the 49-MHz public service band could be used to considerable advantage. Penetration through platform structures was excellent, and communication was possible from within an enclosed steel compressor room where noise levels were as high as 97 dBA to all points on the platform. Author
- Radio Communications