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BELL SYSTEM TECHNICAL JOURNAL 



circuit between Green Harbor and Provincetown, Massachusetts, as 

 indicated on the map. Sand dunes near Provincetown, rising about 80 

 feet, make it possible to secure an optical path across the bay. The 



Fig. 2 — Ultra-short-wave transmitter mounted in metal 

 container suitable for pole mounting. 



radio circuit is extended by wire from Green Harbor to Boston to form 

 a direct Boston-Provincetown toll circuit. It is used as one of a group 

 of terminal circuits and is operated at the normal overall net loss for 



