What is the radar mile measured in microseconds for RF travel to a target and back?

• A. 12.36 microseconds RF to target and back.
• B. 9.50 microseconds RF to target and back.
• C. 24.72 microseconds RF to target and back.
• D. 6.18 microseconds RF to target and back.

Answer: (A)

A radar mile is defined as the distance light travels in one microsecond, with the standard value of 6,080 feet for one-way. Since the radar signal must go to the target and back, the round-trip distance is twice that: 12,160 feet.

Convert to meters and compute the travel time: 12,160 ft × 0.3048 m/ft ≈ 3,707 m. Time = distance / speed of light ≈ 3,707 m / 299,792,458 m/s ≈ 12.36 microseconds.

So the RF travel to a target and back for a radar mile is about 12.36 microseconds.