6.21 



FIGURE 



CIRCUIT BOARDS FROM BINARY SWITCHING MODULE 



FIGURE D.22 



ELECTRICAL NOISE IN THE SEA, AZIMUTHAL 



VARIATION 



db 



-30 

 -2 8 



-2 6 

 -24 

 -2 2 



1 



50 



220° 040° 220° 



AZIMUTHAL VARIATION 

 lOCT 53 BAYA, REEL #4 



REF=lxlO VOLT 



