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|  TM
11-5820-919-40-1
GENERAL
INFORMATION
SCOPE
OF
THE
TECHNICAL
MANUAL
1-5.
Chapter 2 contains system, overall
and detailed functional theory of opera-
1-2.
This technical manual provides
tion of the radio set, with supporting
field maintenance information covering
functional block diagrams.
Radio Set AN/PRC-104 (radio set), and
two of its units:
Receiver-Transmitter
RT-1209/URC
(receiver/exciter)
and
Radio
1-6.
Chapter 3 provides general mainte-
Frequency Amplifier AM-6874/PRC-104
nance data that is applicable to all the
(amplifier/coupler). The third unit,
assemblies, including the modules in the
Battery Case CY-7541/PRC-104 (battery
General Support Maintenance Manual. It includes
pack) is maintained entirely at the
circuit card assembly (module) repair
organizational level and is covered in
procedures; cleaning and examination;
Operator's and Organizational Maintenance Manual
fabrication of test cables, adapters and
TM 11-5820-919-12.
fixtures; and instruction for use of the
maintenance diagrams for performance
test and troubleshooting.
It also
1-3.
contains maintenance data and drawings
The field maintenance information
for the following accessory equipments:
includes reference data, theory of oper-
ation and disassembly and reassembly for
the complete radio set.
It also pro-
Bench
Test Cable (Electrical Power
1.
vides test troubleshooting, alignment
Cable
Assembly
CX-13030/PRC-104)
and repair data for the radio set and
the receiver/exciter and amplifier/
2.
Battery Extender Cable (Electrical
coupler units necessary to replace unit
Power Cable Assembly CX-13031/
components and modules.
Maintenance
PRC-104)
information for the individual modules
is contained in General Support Maintenance Manual
3.
Antenna Base (Antenna
Base
AB-
TM 11-5820-919-40-2. Depot-unique information is
1241/PRC-104)
coveredin Rebuild Standards RS-07748A-50/4. For
parts ordering data refer to Repair Parts and Special
4.
Telegraph Key
(Telegraph
Key
KY-
Tools List TM 11-5820-919-24P.
872/PRC-104)
NOTE
5.
Transit Case (Radio
Set
Case
CY-
7542/PRC-104)
Air Force maintenance philos-
ophy limits maintenance to
removal and replacement of
1-7.
Chapters 4 thru 6 provide the main-
modules.
tenance information necessary to test,
Repair beyond that
level must be performed at
troubleshoot and repair the radio set
and the receiver/exciter and amplifier/
depot only.
coupler units.
It is sectionalized in
the following sequence:
(1) support
equipment and materials, (2) disassembly
Chapter 1 of this technical manual
1-4.
and reassembly, (3) cleaning and examina-
provides information on the physical
tion, (4) performance test and trouble-
aspects and performance characteristics
shooting, (5) repair and replacement,
of the radio set and its support equip-
me nt, and provides general reference
(6) component location and parts list,
and (7) maintenance diagrams.
data.
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