BELOW THE INTERFERENCE REGION 



113 



10,000 



5000 



2000 



1000 



500 



200 





^ 100 



50 



20 



10 



' 25 50 75 100 12 5 150 175 200 225 250 275 300 325 350 



d IN KILOMETERS 

 Figure 49. Maximum range for X = 3 meters (sea water vertical polarization — 20 log 9' = 1). See equation (186). 



