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Electromagnetic theory miscellaneous

Electromagnetic Theory

  1. Helical antennas are often used for satellite tracking at VHF because of—
    1. Troposcatter
    2. Superrefraction
    3. Ionospheric refraction
    4. The Faraday effect
Correct Option: D

Helical antennas are often used for satellite tracking at VHF because of the Faraday effect.



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