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Which of the following is particularly used for VLF?

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Which of the following is particularly used for VLF?

(a) Surface wave

(b) Tropospheric wave

(c) Ionospheric wave

(d) Stratospheric waves

This question was posed to me in unit test.

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

1 Answer

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The correct answer is (a) Surface wave

Explanation: Ground waves are also known as Surface waves are used for low frequencies and broadcasting. Tropospheric waves are used for Mf and HF signals. Ionospheric waves are used for long distance communications.

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