■W -» -TO -« -SO -40 -» -M HO 10 !0 30 40 90 W TO «> W 



■« -eo -TO -to -so -40 -30 -!0 -10 O O M> SO 40 90 60 TO W 90 



FIG. 11.22 



ANGULAR VARIATION FOR A CONSTANT FREQUENCY 

 IN THE DIRECTIONAL SPECTRUM. 



202 



