o 

 x> 

 o 



o 



e 



c 

 o 



Serial No.-2Z-ll3 



Serial No.-2Z-ll6 



° - 90f 



m 

 at 



o 



(A 



o -100 



10 



o 



> 



c 

 o 



o 

 <u 



£X 

 J> 



100 



FREQUENCY -CPS 



HYDROPHONE - PZT TYPE 2Z-II0 

 SENSITIVITY 



FIG. 3 



1000 



a. 

 o 



CABLE 

 1-3 MILES 



UJ 



z 

 o 

 I 

 a. 

 o 



Q -- 

 > - 



X 



N 



,p5|;jt 



HYDROPHONE PREAMPLIFIER 

 SCHEMATIC 



FIG. 4 



