WIDE-BAND OPEN-WIRE PROGRAM SYSTEM 381 



Conclusion 



The above development provides a program transmission system 

 applicable to open-wire lines which even for very long distances will 

 provide transmission characteristics which should be adequate for 

 program transmission for a number of years to come. 



Acknowledgment 



The author makes grateful acknowledgment to his associates in 

 the Bell Telephone Laboratories, to members of the Long Lines 

 Department of the American Telephone and Telegraph Company, 

 and of the Pacific Telephone and Telegraph Company, for their 

 cooperation in connection with the setting up of the circuits and 

 participation in many of the tests, and to the National Broadcasting 

 Company and the Columbia Broadcasting System for their assistance 

 in making available the program pickup sources at San Francisco. 



