Amplifiers - Offset-Fed Motorised Antenna

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Amplifiers - Offset-Fed Motorised Antenna

The offset-fed antenna is designed to have a greater vertical beamwidth than horizontal beamwidth whilst maintaining an effective gain equivalent to a 0.7 m circular parabolic antenna. Antenna efficiency is also higher than a centre-fed antenna due to the lack of aperture blockage from the feed.

The extended vertical beamwidth means that when installed at a central receive site elevation alignment should never be required. The reflector can be mechanically tilted if necessary to allow for installation on a particularly high altitude site where transmissions are generally being received from a short range, effectively below the normal capture angle of the antenna.

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