DC cable voltage drop
Estimate round-trip loss in station power wiring.
Voltage drop--
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DC Cable Voltage Drop Calculator
Estimate voltage drop, delivered voltage and cable heating in radio power wiring.
About this calculator
How to use it
Enter supply voltage, current, one-way cable length, conductor size and material. The calculation includes the return conductor.
Understanding the result
Keep voltage drop low on high-current transmitters. Use suitable fusing, connectors and cable ratings for the expected continuous and peak current.
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.