RADIO EXTENSION LINKS TO TELEPHONE SYSTEM 



637 



Fig. 16 — Towers at Lawrenceville, New Jersey, used to support a number of 

 Sterba antennas for transoceanic communication. These antennas have since been 

 superseded by rhombic antennas. 



DIRECTION 

 OF ARRIVAL 



I 



e©©e©©©©©© 



PLAN OF 

 ELEMENTS 



OOOOQGOOOO 



SIDE ELEVATION 

 INDIVIDUAL 

 ELEMENTS 



CONNECTED 

 ARRAY 



M \ i II 11 



END 

 ELEVATIONS 



ADMITTED 

 WAVE 



_2^ 



TO RECEIVER 



1^ 



REJECTED 

 WAVE 



■< 



SERIES CONNECTION 



REJECTED 

 WAVE 



] 



ADMITTED 

 WAVE 



TO RECEIVE 



HJZ 



PARALLEL CONNECTION 



Fig. 17 — Bruce antenna array. 



