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BELL SYSTEM TECHNICAL JOURNAL 



Each of the two land stations was tied into its nearest center by 

 wire circuits, Deal Beach to New York and Green Harbor to Boston. 

 We will take for our example the New York-Deal Beach-Ship circuit 

 pictured in Fig. 11 and shown diagrammatically in Fig. 12. This is 



Clhffwood 

 Deal Beach 



[Winter Quarter Light Ship 



Fig. 10 



a combination of wire-radio toll circuit, one end of which terminates 

 on a vessel of variable position and the other end of which is capable 

 of being extended either over a local circuit to a New York subscriber 

 or over a long distance circuit to reach subscribers at more distant 

 inland points. 



This communication circuit must fulfil two general requirements. 

 In the first place it must be so constituted electrically as to preserve 

 the feeble voice currents launched upon it by one subscriber so that 

 they be rendered to another person with sufficient volume and fidelity 

 of wave shape as to be readily intelligible. This requires that the 

 circuit be properly engineered as an electrical transmission network. 



