Electromagnetic waves with frequencies roughly between 2 MHz and 30 MHz are spec

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1. Electromagnetic waves with frequencies roughly between 2 MHz and 30 MHz are specifically used for?

Ground wave propagation

Sky wave propagation, bouncing off the ionosphere

Microwave propagation

Direct satellite communication

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This particular frequency band is well suited to reflecting off the ionosphere, letting signals travel far beyond the horizon by repeatedly bouncing between the ionosphere and Earth’s surface.