Coax Loss Calculator
Estimate coaxial cable attenuation and mismatch loss at a given frequency.
Balanced line presets are approximate starting points. Real loss depends on spacing, nearby conductors, and installation.
Loss per 100 ft: dB
Matched Loss: dB
Total Mismatch Loss: dB
SWR at Generator:
Remaining Power: %
Quarter-wave Stub:
Half-wave Stub:
Calculated using the standard $K_1\sqrt{f} + K_2f$ model and SWR mismatch loss equations.