For Ka-Band, what is the range of frequency shift at 1 mph?

• A. 70.5 - 80.2
• B. 90.1 - 99.5
• C. 99.6 - 107.3
• D. 110 - 120

Answer: (C)

The correct range of frequency shift at 1 mph for Ka-Band is accurately represented within the range of 99.6 to 107.3 MHz. This frequency shift is a result of the Doppler effect, which occurs when a radar signal is transmitted and reflected back from a moving object, like a vehicle.

In the context of radar speed measurement, the Ka-Band operates at high-frequency levels, usually around 33.4 to 36.0 GHz. The frequency shift caused by the speed of a vehicle is calculated based on the speed of light and the specific frequency of the radar used. At a speed of 1 mph, the calculated shift falls within the specified range, making it critical for operators to understand how to interpret these figures for accurate speed detection.

Understanding this range is essential, particularly for law enforcement and traffic monitoring professionals, as it directly relates to the accuracy of speed measurement devices using Ka-Band technology.