Table III-4. Electrical Characteristics of S-Series 

 Submarine Coaxial Telephone Cablel3,21 





SB 



SD 



SF 



Cable O.D. 



0.620 inch* 



1.00 inch 



1.50 inch 



Cable Length 



2200 nautical 

 miles 



3500 nautical 

 miles 



4000 nautical 

 miles 



Strength Member 



external 

 armor 



steel strands 

 in center 



steel strands 

 in center 



Repeater 

 Spacing 



38.7 nautical 



miles 



20 nautical 

 miles 



10 nautical 

 miles 



Number of 

 Channels 



48** 



128** 



720** 



Maximum Signal 

 Frequency 



164 kHz 



1 . 1 MHz 



5.9 MHz 



Terminal DC 

 Voltage for 

 Repeater Power 





5500 volts 



3500 volts 



DC Current for 

 j Repeater Power 





390 ma 



136 ma 



* Two cables: one for each direction of transmission. 

 ** Channel width = 3 kHz (frequency multiplexing) . 



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