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distributors are usually adjusted for maximum tolerance of front end 

 distortions and then have ample tolerance for such distortions of the 

 rear ends of the current impulses as are experienced under service 

 conditions. 



Regenerative Repeaters 



As circuits become longer and more complex, eventually a point 

 is reached beyond which signal distortion becomes so great that the 

 signals cannot be reliably received without error. To overcome this 



Fig. 6 — Regenerator unit. 



limitation a device known as a regenerative repeater may be inserted 

 in the line at this point. It has a receiving mechanism similar in 

 principle to the receiving distributor of a teletypewriter and will 

 accurately receive and interpret any signals which a teletypewriter 

 would accurately record. This receiving mechanism is interconnected 

 with a retransmitting mechanism, or sending distributor, which re- 

 transmits the signals reshaped and reformed so as to be substantially 

 free from distortion. In its latest form a one-way regenerative re- 

 peater consists of a receiving magnet and a set of transmitting contacts 

 interconnected by some relatively simple mechanical parts driven from 



