TM 11-5841-287-12
Figure 1-2. Location of major components in aircraft
Table 1-1. Common Names-Continued
1-9. Overall Description of System
Nomenclature
Common name
The data transmitting set consists of seven major
Receiver-Transmitter, Radio
Uhf receiver-transmitter
components (table 1-1 and fig 1-3) units 1A3 and 3 are
RT-1288A/ARC-164(V)
(unit 1A1)
mounted in the aircraft cockpit. Units 1A1, 1A2, 2, and 5
Control, Radio Set C-10547/-
Uhf radio control (unit
are mounted in the equipment bay in the aircraft
ARC-164(V)
1A3)
fuselage. Unit 4 is mounted outside the aircraft. Aircraft
Mounting Base Electrical Equip-
Uhf radio mount (unit
cabling (not part of the data transmitting set)
ment MT-6017/ARC-164(V)
1A2)
interconnects the various units. All signal inputs to the
Encoder, Video KY-865/AKT-18B
Encoder (unit 2)
data transmitting set are supplied by the radar set.
Control, Data Link C-10546/AKT-
Data link control (unit 3)
These signals include fixed target (FT) and moving
18B
Mounting Base, Electrical Equip-
Encoder mount (unit 5)
target (MT) radar video, radar set mode information, and
ment MT-6016/AKT-18B
aircraft navigational data The encoder (unit 2)
Antenna AT-450/ARC
Uhf antenna (unit 4)
accumulates and formats the data for transmission. The
message format is established automatically, depending
1-10.
Description of Encoder
on radar set operating conditions (mapping range,
antenna selection, etc). The radar data to be transmitted
a. The
encoder
is
a
fully
automatic,
is not affected by the control settings of the radar set's
microprocessor- based device used to convert (encode)
recorder. The encoded data is applied to the uhf
radar digital and analog input signals into a serial digital
receiver-transmitter, where it is converted to frequency
data stream for transmission to the data receiving set.
shift keying (FSK) signals for transmission to ground
MT and FT VIDEO, GATED CLOCK, RANGE and
units. The components of the data transmitting set are
RANGE DELAY, and ANTENNA GATE signals are input
described in the following paragraphs.
to the encoder from the radar set. Another group of
Table 1-1. Common Names
signals (1) ADAS PRINT COMMAND; (2) ADAS DATA,
Nomenclature
Common name
(3) CLOCK, (4) DATA MODE, (5) GROUND SPEED,
Transmitting Set, Radar Data AN/-
Data transmitting
and (6) DRIFT ANGLE signals are inputs to the encoder
AKT-18B
set
Radio Set, AN/ARC-164(V)16
Uhf radio set (unit 1)
from the recorder-processor-viewer. All of these signals,
in addition to the data link control signals, are processed
Change 1 1-2
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