OVERSEAS RADIO EXTENSION 249 



matic gain control which minimizes the fading variations in speech 

 volume. One of the radio receivers employed at the Netcong, N. J., 

 receiving station is illustrated in Fig. 4. The antenna leads are 

 brought in beneath the floor in the concentric pipes which are seen to 



Fig. 4— Short-wave radiotelephone receiving center of the American Telephone 

 and Telegraph Company, Netcong, X. J. Radio receiver for South American cir- 

 cuit. Antenna concentric pipe transmission lines enter set overhead. 



rise at the right and connect with the input of the set on the upper 

 left-hand panel. The first two vertical bays are the radio set proper, 

 including the automatic gain control. The third bay, on the right, 

 includes the volume indicator and control and the line connecting 

 equipment. 



