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|  TM 11-5820-518-20
1-6.1. Items Comprising an Operable Equipment (Cont)
Quantity
Nomenclature, part No., and mfr code
NSN
AN/ARC-51X AN/ARC-51BX
NOTE
Number 1 in the quantity column refers to items com-
prising an operable AN/ARC-51X; column 2 refers to
items comprising an operable AN/ARC-51BX.
Radio Set AN/ARC-51X
Radio Set AN/ARC-51BX
5820-00-082-3926
Control, Radio Set C-4677/ARC-51X, 522-3113-
1
004; 13449 (This item is nonexpendable)
Control, Radio Set C6287/ARC-51BX, 522-3629-005,
1
13499 (This item is nonexpendable)
Cooler, Air, Electronic Equipment HD-615/ARC-51X,
1
1
5820-00-082-3701
522-3113-004,13449 (This item is nonexpendable)
Indicator, Standing Wave Ratio ID-1003/ARC, 522-1580-004,
1
1
13449 (This item is nonexpendable)
Mounting MT-2653/ARC, 522-2298-004, 13499 (This item is
1
1
nonexpendable)
Receiver-Transmitter, Radio RT-702/ARC-51X, 522-31144-005,
1
5820-00-082-3699
13449 (This item is nonexpendable)
Receiver-Transmitter, Radio RT-742/ARC-51BX, 522-3628-005,
1
13499 (This item is nonexpendable)
1-7. Common Names
Primary power and signal connections for the
Listed below are nomenclature assignments and
radio set are made at connector on the front of the
common names for the equipment covered in this
receiver-transmitter and on the rear of the radio
manual.
set control. Connections to the aircraft antenna
Common name
Nomenclature
are made from the reflectometer (fig. l-5), located
Radio set.
Radio Set AN/ARC-51X
on the receiver-transmitter front panel. The radio
Radio set.
Radio Set AN/ARC-51BX
set control (figs. 1-1 and 1-2) is installed at a con-
Receiver-Transmitter.
Radio Receiver-Transmitter RT-
venient location near the pilot and is connected to
702/ARC-51X
the receiver-transmitter through the aircraft wir-
Receiver-Transmitter.
Radio Receiver-Transmitter RT-
ing.
742(*)/ARC-51BX
Radio set control.
Radio Set Control C-4677/ARC-51X
1-9. Description of Receiver-Transmitter
Radio set control.
Radio Set Control C-6287/ARC-
51BX
Mounting.
Mounting MT-2653/ARC
The receiver-transmitter includes a main chassis
External blower.
tiler, Air, Electronic Equip-
(not shown) and a mounting base with vibration
ment HD-615/ARC-51X
isolators. A dust cover is fastened to the mounting
Reflectometer.
Indicator, Standing Wave Ratio
ID-1003/ARC
base with 14 screws and to the chassis with 3
screws. The dust cover contains two handles on the
1-8. Description of Radio Set
front panel to facilitate removal and replacement
of the receiver-transmitter into the mount. A gas-
ket is compressed between the dust cover and the
The radio set includes the receiver-transmitter,
mounting base to make the assembly airtight. The
the mounting, the radio set control, the external
external blower draws air through the mounting
blower, and the reflectometer. The receiver-trans-
base, and expels it through the front of the
mitter, which is the main unit of the radio set,
mounting base. The internal air is cooled by heat
is pressurized. It is installed on the mounting in
exchangers (not shown) and is sealed in and pres-
the aircraft. The external blower and the reflect-
ometer are installed on the receiver-transmitter.
surized by the duet cover and the gasket. A pres-
Change 5
1-4
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