SCOPE OF TECHNICAL MANUAL.
cables connecting to the receiver/
exciter are also included.
1-2. This technical manual provides
field maintenance information cover-
ing Amplifier-Converter AM-6879/URC
information necessary to test, trouble-
(amplifier-converter) at the unit level.
shoot, and repair the amplifier-converter
Field maintenance information for the
unit down to circuit card assembly level.
circuit card assemblies is contained in
It is sectionalized in the following
General Support Maintenance Manual
(1) disassembly and reassem-
TM 11-5820-922-40-2. For depot rebuild standards,
bly, (2) cleaning and examination, (3)
refer to RebuiId Standards Manual
performance test and troubleshooting,
RS-07749A/07743A-50/5. For parts ordering data,
(4) repair and replacement, (5) compo-
refer to Repair Parts and Special Tools List
nent location and parts list, and (6)
is mounted on Electrical Equipment Mount-
1-9. The following paragraphs provide
ing Tray MT-4874/URC (mounting tray),
reference data for planning the mainte-
nance of the amplifier-converter.
RT-1209/URC (receiver/exciter), for use
as part of Radio Set AN/GRC-193 (refer to
1-10. TECHNICAL CHARACTERISTICS. Tech-
TM 11-5820-924-12. For coverage of the
nical characteristics for the amplifier-
receiver/exciter (which also part of Radio
Set AN/PRC-104A) refer to Operator's and
Organizational Maintenance Manual
1-11. EQUIPMENT SUPPLIED. The
TM 11-5820-919-12, General Support Maintenance
amplifier-converter and related equip-
Manual TM ll-5820-919-40-1, General Support
Maintenance Manual TM 11-5820-919-40-2, and
Rebuild Standards RS-07748A-50/4. For parts order-
1-12. SUPPORT EQUIPMENT. The test
ing data, refer to Repair Parts and Special Tools List
TM 11-5820-919-24P .
equipment required for complete field
maintenance of the amplifier-converter
equipment may be used.
provides information on the physical
aspects and performance characteristics
of the amplifier-converter and contains
general reference data.
Use only test equipment that
is properly calibrated. Fail-
detailed theory of operation of the
ure to do so may provide erro-
neous and misleading performance
or fault indications.
1-6. Chapter 3 provides general mainte-
nance data that is applicable to all the
1-13. The special tools, materials, and
assemblies. It includes circuit card
fabricated test cables and fixtures
assembly repair procedures, cleaning and
required for field maintenance of the
examination, fabrication of test cables
amplifier-converter are listed in table
and adapters, and instructions on use of
the performance test and troubleshooting