Dme/tacan, Kdi 572/573/574 when used with the kdm 706/706a – BendixKing KXP 756 User Manual
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DME/TACAN
KDI 573/574 Display
NM KT MIN
1
OFF
N 1
HLD
N 2
RANGE GROUND SPEED TIME TO STATION
CHANNELING SOURCE
FUNCTION SWITCH
ı
NM KT MIN
1
RANGE GROUND SPEED TIME TO STATION
CHANNELING SOURCE
ı
92.4 180 31
92.4 180 31
KDI 572 Display
DME
KDI 572/573/574 When
Used With the KDM
706/706A
The effective range of a DME
depends on many factors: most impor-
tant being line of sight limitations
determined by the altitude of the
aircraft (see
location and altitude of the ground
transmitter and transmitter power
output. The degree of maintenance of
the KDM 706/706A DME and
maintenance of the ground station also
contribute to a DME's effective range
capability. Usually line-of-sight
limitations will prevent an aircraft on
the ground from receiving and locking
onto a VORTAC station.
The DME system electronically
converts elapsed time-to-distance by
measuring the length of time between
the transmission of a radio signal to a
pre-selected VORTAC station and
reception of the reply signal. This
distance is then indicated in nautical
miles on the DME range/ground
speed/time-to-station indicator. This
distance is measured on a slant from
the aircraft to the ground and is
commonly referred to as slant-range
distance. Slant-range distance should
not be confused with actual ground
distance. The difference between
slant-range distance and ground
distance is smallest at low altitude and
long range. These distances may
differ considerably when in close
proximity to a VORTAC facility.
However, if the range is three times