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Home > Radar Maintenance and Parts Manuals > > Operational Techniques
OPERATING PROCEDURES
Figure 3-6 X-Band vs. S-Band Display Comparison (V4)

TM-11-5840-360-14-1-1 Radar Set AN/SPS-64(V)5 (NSN 5840-01-034-3946) Manual
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TM 11-5840-360-14-1-1
30. Alternately release and set the switch to the
24. Set and hold the PWR BOOST switch in the ON
HDG SET position until the CRT heading flash agrees
position.
Notice that the strength of all echoes
with the gyro compass reading.
increases.  Weak echoes which were barely visible
before are now definable on the PPI screen.
NOTE:
NOTE:
When steps 25 through 30 above
Whenever the indicator is completely
have been performed, the heading
deenergized (i.e., POWER switch set
flash will remain in synchronism with
to
OFF),
the
following
NSK
the gyro compass in the standby and
synchronization procedure must be
transmit  modes,  but  will  lose
performed  when  returning  the
synchronism when the indicator is
indicator to the standby (ST BY) or
turned off.
transmit (TX ON) mode.
3.8.3 Operational Techniques
25. Set the HD UP/GYRO STAB/HDG SET switch
The RANGE RINGS, BRG SCALE, and PNL
(Figure 3-1, callout 17) to the GYRO STAB position.
LIGHTS  controls  should  not  normally  require
26. Obtain ship's heading from gyro compass
readjustment during active operation.
The GAIN,
reading.
TUNE, BRILLIANCE and CONTRAST controls may
need  slight  adjustment  over  a  prolonged  active
27. Observe CRT heading flash bearing on relative
operating period to ensure optimum performance.
bearing scale.
28. Set and hold the switch to the spring-loaded
The ANTI-CLUTTER controls must be adjusted
HDG SET position and observe direction in which
as conditions dictate, particularly in bad weather, so that
heading flash rotates on successive sweeps.
no small echoes are lost. The picture may be optimized
by careful use of the ANTI-CLUTTER RAIN control.
NOTE:
When not in use, the radar should be placed in
the standby condition if use is anticipated within the
To reverse the direction of the
hour. In standby, the radar is ready for immediate use
heading flash rotation, momentarily
when required. To place the radar in standby, set the
release the switch and then return it
POWER switch from TX ON to ST BY without adjusting
to HDG SET position.
any other controls.
29. Hold the switch in the HDG SET position until
Radar Set AN/SPS-64(V)4 includes S-band
the heading flash bearing on the relative bearing scale
Receiver Transmitter RT-1241 with a peak power of 50
agrees with the gyro compass reading.
kW enabling improved all-weather performance. During
inclement weather the use of S-band equipment is
NOTE:
recommended (see Figure 3-6).
When the switch is held in the HDG
3.8.4 Shut-down Procedure
SET position, the heading flash will
Procedures  for  deenergizing  Radar  Set
rotate slowly for approximately four
AN/SPS-64(V)1 through (V)4 are specified in the
seconds (two sweeps) . The rate of
Systems Operational level. Refer to paragraph 3.2.3 for
rotation will then increase.
(V1), 3.3.4 for (V2), 3.4.4 for (V3) and 3.5.4 for (V4) as
applicable.
3-17






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