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Thread: Secondary RADAR antennas

  1. #1

    Default Secondary RADAR antennas

    Does a directional antenna receive power from a transmitting omnidirectional antenna if the transmitting antenna sits outside the directional antennas beam pattern? A secondary radar has a beamwidth of roughly 2.4 degrees. An aircraft responds omnidirectionally. If the aircraft was say 1.6 degrees off boresight (.4 degrees outside of the beam pattern) and transmitted, would the radar antenna recive the transmission?

  2. #2

    Join Date
    Oct 2009
    Oulu, Finland


    Yes, but very heavily attenuated, at least by 3 dB.

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