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BELL SYSTEM TECHNICAL JOURNAL 



for the different types of receiving sets. In this connection there 

 should be recognized the advantage from the interference standpoint 

 which exists in grouping together the broadcast transmitting stations 

 as far as possible in one location, and in equalizing their powers. Such 



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Fig. 13 — Showing the greater area over which the more highly selective receiving 

 sets may receive a desired station D and exclude an interfering station I 



grouping and equalizing would enable the receivers to obtain sub- 

 stantially equal fields from all of the stations and would minimize 

 the selectivity which they are required to possess. While it is im- 



