fan-marker beacon

[′fan ‚märk·ər ‚bē·kən] (navigation) A very-high frequency radio facility having a vertically directed fan beam interesecting an airway to provide a fix. Also known as fan marker; radio fan-marker beacon.

fan marker

A highly directional radio signal transmitted vertically upward from a transmitter located along a navigational radio-range, as in an instrument landing system (ILS). The output of a fan marker is heard only when the aircraft is directly above the transmitter, thus indicating to the pilot his exact position. A fan marker is keyed for identification. Also called a fan-marker beacon.

单词	fan-marker beacon
释义	fan-marker beacon fan-marker beacon [′fan ‚märk·ər ‚bē·kən] (navigation) A very-high frequency radio facility having a vertically directed fan beam interesecting an airway to provide a fix. Also known as fan marker; radio fan-marker beacon. fan marker A highly directional radio signal transmitted vertically upward from a transmitter located along a navigational radio-range, as in an instrument landing system (ILS). The output of a fan marker is heard only when the aircraft is directly above the transmitter, thus indicating to the pilot his exact position. A fan marker is keyed for identification. Also called a fan-marker beacon.
随便看	homolog of mouse foxi2 homolog of mouse kif13a mannose-6-phosphate receptor transporter homolog of mouse t cell and mast cell growth factor 40 homolog of secretory protein sec7 homolog of xenopus mo15 cdk-activating kinase homolog of yeast alg2 homolog of yeast mcm10 homolog of yeast nop10p homologon homologoumena homologous homologous anaphylaxis homologous antigen homologous antiserum homologous artificial insemination homologous c homologous chromosome homologous chromosomes homologous c's homologous desensitization homologous egf receptor kinase homologous fertilization homologous genes homologous graft homologous insemination