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The Glide Path antenna is located on the side of the runway approximately
  • A
    300 m beyond the threshold
  • B
    200 m beyond the ILS reference point
  • C
    200 m before the threshold
  • D
    300 m from the far end of the runway

Refer to figure.

The Glide path is, together with the localizer, part of the Instrument Landing System (ILS). These combined give the pilot vertical and lateral guidance towards the runway.

A glide slope antenna, as seen in the figure, uses an antenna array (typically red and white) which is located on one side of the runway in a building typically between 750 ft (230 m) and 1250 ft (380 m) down the runway from the approach end of the runway. The glide path antenna transmits a carrier signal in the Ultra High Frequency (UHF) range (typically between 329.3 and 335.0 MHz). The centre of the glide path shows the ‘ideal’ glidepath of approximately 3°

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