Application Notes

dB Calculator

30 dBm + 30 dBm = 60 dBm? これほど単純な計算で済まないことはご存知のとおりです。



dBm Calculator

This tools helps to add and subtract an arbitrary number of power levels expressed in units of dBm and watt.


Voltage Calculator

This tools helps to add and subtract correlated and uncorrelated voltage levels.


Unit Converter

This tool calculates for an entry using a unit such as dBm, dBW, mW, W, mV, V, dBV, dBµV and dBu the corresponding values for all other units, for individual impedance values.


dB Converter

This tool converts linear power and voltage ratios to dB and vice versa.


VSWR Converter

This tool converts reflection quantities such as Voltage Standing Wave Ratio VSWR, reflection coefficient, reflected power, return loss and mismatch loss.


The macOS version can be downloaded for free from the

Mac App Store


Name Type Version/Firmware Date Download