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A radio magnetic indicator (RMI) combines a magnetic compass, VOR, and ADF indications. The azimuth card of the RMI is rotated by a remotely located flux gate compass. Thus, the magnetic heading of the aircraft is always indicated. The lubber line is usually a marker or triangle at the top of the instrument dial.
- Aviation Radio Navigation
In the early years of aviation, a compass, a map, and dead...
- Vor Navigation System
A separate gauge for the VOR information is not always used....
- Aviation Radio Navigation
The RMI has one or two needles which can be used to indicate navigation information from either the ADF or the VOR receivers. Both needles are different in appearance, one of them operating with NAV 1 or ADF 1 radio and the other one operating with NAV 2 or ADF 2 radio.
A radio magnetic indicator (RMI) is an alternate ADF display providing more information than a standard ADF. While the ADF shows relative angle of the transmitter with respect to the aircraft, an RMI display incorporates a compass card, actuated by the aircraft's compass system, and permits the operator to read the magnetic bearing to or from ...
Direction finding (DF), or radio direction finding (RDF), is the use of radio waves to determine the direction to a radio source. The source may be a cooperating radio transmitter or may be an inadvertant source, a naturally-occurring radio source, or an illicit or enemy system.
The radio magnetic indicator (RMI) is one solution to the ADF's shortcomings. The RMI combines three components: a fluxgate, a heading indicator, and a relative bearing indicator. Some RMIs have two needles like the one pictured on this page; others only have one needle.
The Radio Magnetic Indicator (RMI) is an essential electronic navigation instrument used in aviation. It integrates a magnetic compass with an Automatic Direction Finder (ADF) or Very High-Frequency Omnidirectional Range (VOR) to provide accurate directional information to pilots.
Radio Magnetic Indicator (RMI) The RMI scale is automatically orientated, like a remote indicating compass, to the earth's magnetic field. Again, the needle indicates the actual bearing of the beacon from the aircraft, the tail indicates the bearing of the aircraft from the beacon, and the relative bearing of the beacon can be assessed from the ...
