dB gain & loss chain
Add three gain or loss stages and calculate final RF power.
Final power--
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dB Gain and Loss Chain Calculator
Add RF gains and losses and calculate final watts and dBm through a system chain.
About this calculator
How to use it
Enter starting power and up to three positive gain or negative loss stages to calculate net change and final power.
Understanding the result
Use consistent dB values and include cables, filters, splitters, amplifiers and antenna gain only when they belong in the calculation.
More ham radio calculators
Use this calculator as a practical starting point. Check critical radio, electrical and installation work with suitable test equipment and current licence requirements.