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|  MIL-T-81527B(AS)
3.4.1.6.8.4.3.2.3 Marking.
Each extension shall remarked: USED WITH
MICROWAVE SHELF (609R434) 3 REQ'D SHELF EXTENSION PART OF
TABLE
RACK
RADAR
MAINTENANCE.
3.4.1.6.8.4.3.3 Extension, Air Duct.
The Extension Air Duct shall permit cooling
3.4.1.6.8.4.3.3.1 Function.
air to be supplied to the Para Amp Pump Housing of the AN/APG-59 Radar
Set when the Receiver and Transmitter Wave guide Assemblies of the Radar
Set are lowered for access.
The Extension Air Duct shall be fabri-
3.4.1.6.8.4.3.3.2 Form Factor.
cated from rectangular tubing a nominal 1 inch by 1/2 inch with an overall
The Air Duct shall be fitted with attachment fittings
length of 11- 1/4 inches.
The Air Duct shall be offset and shall con-
and shall be sealed at the ends.
tain an air inlet and an air outlet, each approximately 5/8 inch in
diameter arranged such that they are in the same plane effectively 10 inches
apart.
The Extension Air Duct shall be marked:
3.4.1.6.8.4.3.3.3 Marking.
USED WITH MICROWAVE SHELF (609R434) AIR DUCT EXTENSION TOOL
PART OF TABLE RACK RADAR MAINTENANCE.
One each of the following Cable As -
3.4.1.6.8.4.3.3.4 Cable Assemblies.
semblies shall be provided to permit normal operation of the AN/APG-59
Radar Set Receiver and Transmitter Wave guide Assemblies when they are
lowered for access.
(a) Receiver Waveguide Assembly, Patch Cable Assembly No. I -
This assembly shall consist of four individual cables 20 + 1 inches long. The
individual cables shall be formed into one main assembly, leaving the in-
dividual cables free at both ends to mate with system connectors 2A8J12 and
2A8P12; 2A8J13 and 2A8P13; 2A8J14 and 2A8P14; 2A8J27 and 2A8P27. All
connectors shall be wired with RG-195/U subminiature coaxial cable per
MIL-C-17/70.
59
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