Note that Brooks and Briscoe (1991) have reported success with high-frequency radio transmission also. A possible solution to the satellite data transmission problem is the use of excess capacity on a communications satellite that is part of NASA's Tracking and Data Relay Satellite System (TDRSS). Data transmission costs might be reduced if the excess capacity of a NASA satellite could be harnessed for oceanography, but many issues remained unanswered as to the feasibility of using TDRSS.

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