The unit used for the IAD/CAD frequency is which?

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Multiple Choice

The unit used for the IAD/CAD frequency is which?

Explanation:
The key idea is that frequency for radio systems is expressed in units that reflect practical RF bands used by a defense network. For IAD/CAD (air defense) systems, the operating bands are in the megahertz range, which offers a good balance between antenna size, propagation, and data rate. Using kilohertz would demand unrealistically large antennas and yield low data rates, while gigahertz bands are used for higher-resolution or specialized links but aren’t the standard labeling for this context. Hertz is too granular for practical labeling of these systems’ operating bands. So the unit commonly used to describe their frequency is megahertz.

The key idea is that frequency for radio systems is expressed in units that reflect practical RF bands used by a defense network. For IAD/CAD (air defense) systems, the operating bands are in the megahertz range, which offers a good balance between antenna size, propagation, and data rate. Using kilohertz would demand unrealistically large antennas and yield low data rates, while gigahertz bands are used for higher-resolution or specialized links but aren’t the standard labeling for this context. Hertz is too granular for practical labeling of these systems’ operating bands. So the unit commonly used to describe their frequency is megahertz.

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