Stout General Knowledge Practice Test

During radar operation, what is the safety distance to the front of the MHR?

10m to the front 20m to the front 40m to the front 30m to the front

Correct Answer:

30m to the front

Explanation:

The safety distance being tested is about RF exposure from radar, focusing on the strongest energy in the forward direction. The antenna’s main beam carries the highest power density, so keeping a certain distance in front ensures that the energy reaching a person stays within allowable limits. For this radar, that front-distance requirement is 30 meters, which provides a conservative buffer so continuous exposure remains below the maximum permissible levels under typical operating conditions. Shorter distances would risk higher exposure than allowed, while a much larger distance isn’t necessary given the antenna power and duty cycle. Always refer to the equipment manual for the exact numbers, since they can vary with power, frequency, and operation.

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