Use the “Quick Search” box to locate your required term and/or definition. The following “Search conditions” can be used to refine your search: “Contains”, “Begins with”, “Ends with”, “Equals”, “Does not contain” or “Does not equal.”
Eng ID Term Definition
4201
radiobeacon buoy
See BUOY.
4202
radio bearing
See BEARING.
4203
radiocommunications
Any TELECOMMUNICATION by means of RADIO WAVES.
4204
radio compass
See RADIO DIRECTION FINDER.
4205
radio direction finder
Radio receiving equipment which determines the direction of arrival of a SIGNAL by measuring the ORIENTATION of the WAVE FRONT or of the mag... more
Radio receiving equipment which determines the direction of arrival of a SIGNAL by measuring the ORIENTATION of the WAVE FRONT or of the magnetic or electric vector. Radio direction finders may be either manual or automatic. Also called direction finder. Formerly called radio compass.
4206
radio direction finding (or finder) station
A RADIO STATION intended to determine only the direction of other stations by means of trans­mission from the lat­ter.
4207
radio fog signal
See FOG SIGNAL.
4208
radio frequency
See FREQUENCY.
4209
radio horizon
The line at which direct RAYS from a transmitting ANTENNA become tangent to the EARTH's surface. Its distance from the transmitting ANTENNA ... more
The line at which direct RAYS from a transmitting ANTENNA become tangent to the EARTH's surface. Its distance from the transmitting ANTENNA is greater than that of the visible HORIZON, and in­creases with decreasing FREQUENCY.
4210
radiolocation
Determination of POSITION or of a LINE OF POSITION by means of radio equipment. See NAVIGATI­ON: ELECTRONIC.
4211
radio mast
A tower, pole, or other structure for elevating an ANTENNA.
4212
radiometer
An instrument for measuring the intensity of RADIANT ENERGY.
4213
radio navigation
See NAVIGATION: ELECTRONIC.
4214
radio navigational warning
See NAVIGATIONAL WARNING.
4215
radio range
A radio facility the emissions of which are intended to provide a definite course guidance.
4216
radio range station
A radio navigation land station in the aeronautical radio navigation service providing radio EQUISIGNAL ZONES. In certain instances a radio ... more
A radio navigation land station in the aeronautical radio navigation service providing radio EQUISIGNAL ZONES. In certain instances a radio range station may be placed aboard a ship.
4217
radio receiver
Equipment for receiving radio signals and converting them into usable form.
4218
radio signals: list of
See LIST OF RADIO SIGNALS.
4219
radiosonde
Instrument carried through the ATMO­SPHERE, equipped with devices permitting one or several meteo­rological elements (pressure, temperature,... more
Instrument carried through the ATMO­SPHERE, equipped with devices permitting one or several meteo­rological elements (pressure, temperature, humidity, etc.) to be determined, and provided with a RADIO TRANSMITTER for sending this information.
4220
radio sonobuoy
See SONO­BUOY.