MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
ITEM NAME: LANDING CONTROL CENTRAL
TYPE: AN/MPN-16
Power Output: 45 kw (peak)
line horizontal. Logarithmic range
Range (determined with T-33 type aircraft):
scales provide increasing sensitivity
At least 8 naut mi
with decreasing range.
Coverage
Electronic Cursors: Separate cursors to
Azimuth- 20 deg
indicate azimuth courseline, elevation
Elevation: 7 deg
glidepath, and glidepath downward devi-
Accuracy
ation limit.
Azimuth: 0.6 pct of target range plus
Maps: Separate illuminated maps indicate
10 pct of deviation from optimum approach
limits of scan and intervening degree
path.
marks for both azimuth and elevation
Elevation: 0.3 pct of target range plus
sectors.
10 pct of deviation from glidepath.
Environmental Conditions
Range: 2 pct when target range is more
Ambient Temperature
than 5 pct of indicator range setting.
Operating: Interior, -22 deg to plus
Resolution
140 deg F (-30 deg to plus 60 deg C)
Azimuth: 1.1 deg target separation
Nonoperating: Exterior, -40 deg to
Elevation: 0.6 deg target separation
plus 140 deg F (-40 deg to plus 60 deg C)
Range: 200 ft separation
Relative Humidity: 100 pct max under
Detectable deviation from glidepath:
plus 90 deg F (plus 32 deg C)
25 ft at one-mi range
Barometric Pressure (operating): Sea
PRF: 1833 pps 3 pct (precision indicator)
level to 6000 ft
Amplitude (terminated in 100 ohms): 35v
Salt Atmosphere: As encountered in
min for at least 0.5 usec at 50 pct of peak
coastal regions.
amplitude.
Sand and Dust: As encountered in
Rise Time: 400v per usec min
desert regions.
Indicator Characteristics (Precision Radar)
Rain: As encountered in tropical
regions.
Display
Type: Azimuth (lower half) and elevation
INSTALLATION CONSIDERATIONS
(upper half) expanded displays combined
Siting: The mobile RAPCON may be
on 12 in. CRT with sector limiting to
located up to a distance of 500
prevent overlap.
feet from the GCA Radar Set. The
Information: Normal and MTI video, range
mobile RAPCON must never be located
marks, cursors, and servo data.
within the scan area of the preci-
Sweeps: Logarithmic timebase sweeps 8-5/16
sion antennas of the radar set. The
in. long. At 1 mi, sensitivity is 3
AN/MPN-16 equipment must be located
times that of linear sweep at one mi
a minimum distance of 500 feet from
Ranges
the centerline of any runway, 250
Range Marks: Adjustable for any range
feet from the far edge of any taxi-
between 6 and 10 naut mi
way (350 feet for heavy bomber bases)
Range Mark Calibration: 1-mi intervals
and 125 feet from the far edge of
with variable delay between O and 55
any apron. These distances are meas-
used (O to 4.5 mi) with respect to
ured to the end of the AN/MPN-16
the timebase sweep origin.
equipment nearest the runway, taxi-
Off-Centering: Azimuth scale expanded
way or apron.
approx 3 times, with vertex at left and
Cabling Requirements: The mobile
runway approach course horizontal; eleva-
RAPCON equipment is capable of
tion up-down scale expanded approx 10
remote operation up to a distance
times, with vertex at left and ground
of 500 feet, although only 250
feet of cable is supplied.
AN/MPN-16: 3
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