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Coax Calculator
Enter the Outer Diameter (D), Outer Diameter (d), and Permittivity.
 
D (inches) d (inches) Zo (ohms) fc (GHz) C/length (pF/ft) I/length (nH/ft)
50.00 18.91 29.97 72.36
 
 
 
Zo=138*LOG(D/d)/Er^0.5
Fc=11.8/(Er^0.5*3.14159*(D+d)/2)
C=7.354*Er/LOG(D/d)
L=140.4*LOG(D/d)
 

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