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The broadcast signals received at low frequencies during day-time are due to _________

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The broadcast signals received at low frequencies during day-time are due to _________

(a) Ground wave

(b) Space wave

(c) Sky wave

(d) Tropospheric waves

This question was posed to me during a job interview.

The question is from Radio Wave Propagation in portion Radio Wave Propagation of Antennas

1 Answer

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Best answer
Right answer is (a) Ground wave

The best explanation: Ground wave propagation is used for signals up to frequency of 2MHz. It is useful for the broadcast and low frequency signals. Space waves are also known as tropospheric waves useful for FM reception. Sky wave propagation is used for long distance communication.

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