Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: RADAR EQUIPMENT
TYPE: SG-a, -b, -c, -d, -1, -b, -1c,
-1d, -2S, -2Sb
converted by Field Change 62.
RELATION TO SIMILAR EQUIPMENT
Repetition Rate: 750 to 850 pps (this
rate changed by Field Change 27.
The SG-a is the SG converted in the field and is the
Type Receiver: Superheterodyne
same electrically as the SG-1. The SG-b is the SG-a
IF: 30 mc
modernized by Field Change 5O. The SG-c is the SG-a
Bandwidth: 1.5 mc
adapted for zenith watch per Field Change 54. The SG-
Power Requirements: 115v plus or minus
d is the SG-b adapted for zenith watch per Field Change
5%, 60 cps plus or minus 2%, 1-ph, 2.8
54. The SG-1 is a production equipment and the same
kva or 220 or 440v ac or 7.5 kw output
electrically as the SG-a.
The SG-lb is the SG-1
gasoline engine-driven alternator set.
modernized per Field Change 50. The SG-1c is the SG-
Antenna Data
1 adapted for zenith watch per Field Change 54. The
NT-66ABJ-1
SG-1d is the SG-lb adapted for zenith watch per Field
Type: Parabolic
Change 54. The SG-2S is similar to the SG-a and SG-1
Feed: Waveguide
but is designed for shore installation and includes a
Beamwidth: 5 deg horizontal, 15 deg
tower for the new type antenna. The SG-2Sb is the SG-
vertical at 1/2 power points.
2S modernized by Field Change 54.
Rotation: 8 or 16 rpm
Unmodernized equipments are those that have Field
NT-66AMS
Changes up to and including 49 incorporated, while
Type: Slatted parabolic
modernized equipments incorporate Field Change 5O.
Feed: Waveguide
Field Change 65 to SG-b, SG-lb, SG-d, and SG-2Sb
Beamwidth: 2.5 deg horizontal, 5 deg
is to enable those equipments to be used with AN/UPX( )
vertical at 1/2 power points.
recognition equipments.
Rotation: 8 or 16 rpm
Field Change 60 for SG-b and SG-lb equipments
NT-66AKZ
provides a choice of normal or MTI presentation and
Type: Parabolic
improves system performance by reduction of side lobes
Feed: Waveguide
and increase of antenna gain.
Horizontal Beamwidth: 5.5 deg
TECHNICAL DESCRIPTION
Rotation: 8 or 16 rpm
Frequency Range: 3000 to 3100 mc
NT-66AGC
Peak Power Output: Approx 60 kw
Type: Slatted parabolic
Frequency Control: Self-excited oscilla-
Feed: Waveguide
tor.
Beamwidth: 3 deg horizontal, 5 deg
Emission: Pulse
vertical.
Pulse Data
Rotation: 2 or 4 rpm
Width: 2 usec, 1 or 2 usec for equipment
INSTALLATION CONSIDERATIONS
Related Equipment:
Required but not Supplied.
(1) Load Divider NT-23AGC, (1) Auto-
transformer NT-301250.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
SHIPPING DATA
COMPONENT
BOXES
OVERALL DIMENSIONS
UNIT WT.
(NR.)
(Inches)
(Pounds)
SG-1 INITIAL INSTALLATION
Transmitter-Receiver NT-43AAK-3
1
30 x 41 x 80
1425
Antenna Pedestal for NT-66AB3-1
1
27 x 41 x 45
476
Antenna Reflector for NT-66ABJ-1
1
18 x 18 x 53
194
Control Amplifier Assy NT-50AAT-1
1
18 x 21 x 32
185
including:
Motor-Dynamo Amplifier NT-21AAY
Lever Switch NT-24AAD
SG-a: 2
Previous Page
