TM 11-5840-281-12-1
2.5. PRELIMINARY OPERATING PROCEDURE. (CONT)
SWTICH POSITIONS
DISPLAYED DATA
MASTER
SLAVE
MASTER
SLAVE
SCAN MODE
RANGE MILES
SCAN MODE
RANGE MILES
SCAN RADAR IFF
SCAN
RADAR
IFF
IFF
80
IFF
80
PPI
X
PPI
X
SIMULT
80
IFF
80
BETA
PPI
X
60AZ
80
IFF
80
BETA
PPI
X
35EL
80
IFF
80
BETA
PPI
X
NORM
80
IFF
80
BETA
PPI
X
SEARCH
80
IFF
80
PPI
X
PPI
X
2-6. SEARCH OPERATION.
SEARCH MODE
The search mode of operation locates aircraft within a 40-nautical-mile radius of the airfield and is capable of displaying
IFF information within an 80-nautical-mile radius of the airfield when used in conjunction with Interrogator Set ANITPX-
44. In the search mode, the operator can select display ranges of 5, 10, 20, and 40 nautical miles that provide range and
bearing information necessary to direct the aircraft into position for making a precision (gca) approach. An 80-nautical-
mile range displays IFF video only. Range marks of 1, 5, or 10 miles are displayed when RANGE MILES switch Is
positioned to select range display. A 30-degree sector of the range marks is blanked to present alinement position of the
precision approach path. The azimuth antenna may be tilted to + 25 degrees for high-altitude coverage.
SIMULT mode is not used when only one control-indicator is used during the operation of the radar set. When operating
in SIMULT mode, the slave control-indicator will have search control of aircraft (ppi presentation). During final approach,
control of aircraft will pass to the master control-indicator that has beta presentation in SIMULT mode.
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