MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
ITEM NAME: RADAR BONE SCORING CENTRAL
TYPE: AN/MSQ-35
Beamwidth: 20 mils
External Sync Input: High impedance, 3
Transmitting Group
to 8v peak-to-peak, syn neg
Frequency: X-band, 8500 to 9600 mc
Kinescope: 14-in. rectangular, aluminized, type 14BAP4
Peak rf Power: 250 kw
Stable Local Oscillator
Average rf Power: 37.5w
Operating Characteristics
Type: Pulse
Frequency Range: 3100 to 3600 mc
Pulse Shape: Rectangular
Dial Calibration: 250 kc per division
Pulse Repetition Frequency: 600 pps
Dial Accuracy: 1 part in 10,000
Use Duration: 0.25 usec
Frequency Stability
Transmitter Type: Tuneable magnetron
Short Term: 150 cps peak-to-peak max
(type 5780)
fm deviation in bandwidth of 15 cps
Magnetron Current: 3.5 ma
to 20 kc
Receiving Group
Long Term: Less than 1 part in
Receiver Type: Superheterodyne
100, 000
Overall Noise Figure: 6 db
Power Output: 80 mw min
Rf Amplifier: Parametric amplifier
Power Stability: plus or minus 1 db
Local Oscillator: Dual; radar, beacon
Input Power: 117v plus or minus 10%,
Intermediate Frequency: 60 mc
60 cps, 2 amp
IF. Bandwidth: 10 mc
Moving Target Indicator Group
Presentation Group
Operating Characteristics
Input Power: 120v plus or minus 10%,
Video Presentation: Three 5-in. A-type
1-ph 4 amp nom, 10 amp max , 60 cps
scan tracking indicators for range,
Thermal Cutout: Unit shuts off at 130
azimuth, and elevation
Dial Presentation: Three servo-driven
plus or minus 5F cabinet temperature
Stability: 24 hr without further adjustment
dial indicators for range, azimuth
Operating Temperature Range: plus
and elevation
60F to plus 90F
Computer System
Operational Limits
Input Signals
Scoring Range: 200,000 yds
Sync Trigger Pulse
Altitude: 300,000 ft
Prf Center Frequency: 500 to 1000
Ground Velocity: Mach 10
pps
Vertical Velocity: Mach 5
Wobbulation: up to plus or minus
Ballistic Limits
10% of center freq
Trail: 1000 mils
Max instantaneous prf, 660 pps
Wind: 250 knots
Pulse Rise Time: 0.3 usec or less
Time of Fall: 90 sec
Pulse Duration: 2.3 usec
Accuracy: 400 ft circular error probable,
Pulse Amplitude: Greater than 1Ov
50% under the following conditions:
into 75 ohms
speed, mach 0.3 to mach 3;
IF. Input Signal
altitude, 200 to 100,000 ft; horiz
Center Frequency: 60 mc
range; 1 to 100 naut mi
3 db Bandwidth: 2.5 plus or minus
Television
0.25 mc
Television Camera
Coho Lock Pulse
Scanning Standards: 525 lines, 60
Center Frequency: 60 mc
fields, interlaced 2:1
3 db Bandwidth: 2 plus or minus
System Resolution: 600 lines
0.25 mc
Systems Sensitivity: Signal-to-noise
Amplitude: Greater than Iv peak-
ratio of 20 db at 28 ft-candles at f/2
to-peak into 75 ohms
Lens System
Output Signals
Focal Lengths of Dual Lenses: 40 in;
Video Output: 2.5 to 4v peak, adjustable,
8 in.
into 75 ohms, neg polarity
Relative Aperture (Both Lenses): f/6.3
Normal Detector Output: 0.1v peak
Total Field of View
into 5000 ohms, pos polarity
40-in. Lens: 0.88 deg
Wobbulator Output
8 in. Lens: 4.5 deg
Pulse Repetition Frequency: 500
Photographic Resolution
to 1000 pps
(with Kodak Plus X film): 45 lines
Polarity: Pos
per mm
Pulse Amplitude: 1Ov into 75 ohms
Visual Resolution (Min): 182.7 lines
Pulse Duration: 1.0 usec
per mm
Prf Deviation: plus or minus 10%,
Television Monitor
adjustable
Input Power Required: 105 to 13Ov, 60
Cancellation Ration
plus or minus 3 cyc; 125w
30 db min overall (IF.)
Video Signal Required: 0.25v peak; 2v
38 db min, two storage tube operation
max sync neg
24 db min, single storage tube operation
Video Input Impedance: 75 ohm terminating
resistance with switch on rear
apron
AN/MSQ-35: 3
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