True or False: Radar ranges are less accurate when operating in fog?

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Fog does not change how long a radar pulse takes to travel to a target and back, nor does it alter the speed of light. The range readout comes from the precise timing of that round trip and the system’s calibration. Fog is just water droplets that reduce visibility and can weaken echoes, but it doesn’t meaningfully affect the timing that determines range. In practice, targets may become harder to detect in fog due to reduced echo strength, but once a return is received, the range value remains as accurate as the radar’s timing and calibration allow. Only unusual atmospheric refraction effects, not fog itself, can distort range under some conditions. So the statement is not correct.