en

middle marker beacon

1

Terminological databases

EKI terminibaas Esterm

ID 735180 Last modified 03.05.2024
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Domain air traffic
  • ILS süsteemi 75MHz sagedusel töötav komponent
  • an ILS (instrument landing system) navigation facility in the terminal area navigation system located approximately 3500 ft from the runway approach end on the extended centerline, transmitting a 75 MHz fan-shaped radiation pattern, modulated at 1300 Hz
    Good to know
    • It is keyed alternately dot and dash and received by compatible airborne equipment, indicating to the pilot both aurally and visually, that he or she is passing over the facility. The middle marker is located at or near the point of decision height for ILS Cat I.
Good to know
  • Valdkond ICAO lisade põhjal loodud klassifikaatori järgi: Lennundusside (telekommunikatsioon)
keskmarker
Usage examples
  • Keskmarker asub tavaliselt raja lähedal otsusekõrguse punktis, kus glissaadi kõrgus maapinnast on umbes 200 jalga. Keskmarkeri signaal koosneb punktidest ja kriipsudest sagedusel 1300 Hz, 6 märki sekundis ja sünkroonselt vilgub oranž lamp.
MM abbreviation
middle marker
Usage examples
  • The middle marker shall be located so as to indicate the imminence, in low visibility conditions, of visual approach guidance.
middle marker beacon
Usage examples
  • A middle marker beacon is also used. It is located on approach approximately 3,500 feet from the runway. It also transmits at 75 MHz. The middle marker transmission is modulated with a 1300 Hz tone that is a series of dots and dashes so as to not be confused with the all dash tone of the outer marker.
MM abbreviation

Metroloogia terminibaas

ID 1121216 Last modified 01.12.2024
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Domain metrologymeasuring instruments
  • markermajakas, mis hoiatab piloote, et nad laskuvad läbi otsustuskõrguse (tavaliselt 60 m maapinnast glissaadil) ja oleksid pidanud juba alustama lähenemist
  • markermajakas, mis määratleb punkti piki glissaadi, mis tavaliselt asub otsusekõrgusel või selle lähedal
  • marker beacon the pilots that they are descending through the CAT I decision altitude (typically 60 m above the ground level on the glideslope) and should have already initiated the missed approach if one of several visual cues has not been spotted
  • marker beacon that defines a point along the glideslope of an ILS normally located at or near the point of decision height
keskmarkermajakas preferred
Usage examples
  • Keskmarkermajakas on majakas, mis määrab punkti piki maandumissüsteemi seadme glissooni, mis tavaliselt asub otsustuskõrguse punktis või selle lähedal.
keskmajakas
middle marker beacon preferred
LM abbreviation

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