Statistics on Bridge-to-Bridge Frequency Usage at Selected Sites in the Fifth Coast Guard District.
Abstract
Equipment was assembled and tested to record the time of occurence and the duration of transmissions on the Vessel Bridge-to-Bridge radio frequency, VHF-FM Channel 13. The input to this equipment was provided by magnetic tape recordings previously obtained at each site over a twenty-four hour period. Message length histograms indicated that about 50% of all transmissions were of less than 3 seconds in duration and that about 95% of all transmissions were of less than 10 seconds in duration. The sites for which data was obtained include Cape Henry, Sewells Point and Portsmouth, VA, the Chesapeake Bay Bridge-Tunnel, Point Lookout, Sandy Point, Fort Smallwood and Fort McHenry, MD, and Southport, N.C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1975
- Accession Number
- ADA006816
Entities
People
- J. A. Mcintosh
- L. B. Brown
Organizations
- [Means, goals and clinical aims of physioradiological methods of examination.]