DELTALINK / RF
RF Cable Loss Calculator
Compare two RF jumpers at the same frequency and length. Find the lower-loss connection.
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Verified cable sources
Only reviewed manufacturer data is used. Linear interpolation stays within its verified frequency range.
Engineering notes, formulas & examples
Formula and units
Ljumper = attenuation(f) × length + connector count × loss per connector + adapter loss
Manufacturer attenuation is interpolated linearly between reviewed points, in dB/m. Each panel represents one complete jumper. Measured insertion loss replaces its full estimate.
Worked example
At 5.8 GHz and 0.5 m, reviewed LMR-400 attenuation (0.355 dB/m) plus two assumed SMA connectors (0.40 dB) gives 0.5775 dB. LMR-240 gives 0.734 dB. Difference: 0.1565 dB.
Assumptions and limitations
No extrapolation outside the verified frequency range. Measured values must apply at the selected frequency and reference planes. Connector quality, bends, moisture, mechanical strain and return loss/mismatch affect assemblies. Comparison estimates budget improvement, never guaranteed throughput.