TM 11-5840-281-12-1
2-7. PRECISION APPROACH OPERATION. (CONT)
VIDEO CLUTTER (CONT)
3. View C exhibits clutter being further reduced by placing FTC switch to LIN position and TRANS-MITTER
switch remaining in NAR PLS position. LIN FTC is used to reduce clutter from ground returns.
4. View D exhibits a still further reduction of clutter by placing FTC switch to LOG position and TRANSMITTER
switch remaining in NAR PLS position. LOG FTC is used to reduce clutter from precipitation.
2-8. HEIGHT FINDER OPERATION.
The height finder operation is accomplished with the master control-indicator. The SCAN MODE switch must be in
NORM, 350 EL, 600 AZ, or SIMULT position. When a slave control-indicator Is used In conjunction with a master control-
indicator, the slave can be operated as a monitor for precision approach operation, provided the SCAN MODE switch on
the master is In NORM, 350 EL, or 600 AZ position. The slave will have a beta scan. When the SCAN MODE switch on
the master is in SIMULT position, the slave will have a ppi scan. The height finding feature provides a means of
determining the altitude of an aircraft (off the approach end of the runway) within the limits of - 1 to 35 degrees In
elevation and 30 degrees In azimuth.
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