298 



BELL SYSTEM TECHNICAL JOURNAL 



14.7 A Shipborne A nti- Aircraft Fire Control Antenna}^ 



A Shipborne Anti- Aircraft Fire Control Antenna is shown in Fig. 51. 

 This antenna consists of two main horizontal cylindrical parabolas in each 





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Fig. 48— Mark 1 Antenna. 



of which two groups of four half-wave dipoles are mounted with their axes 

 in a horizontal line at the focus of the parabolic reflectors. The four groups 

 of dipoles are connected by coaxial lines on the back of the antenna to a lobe 

 16 Written by C. A. Warren. 



