KING
KY 196/196E/KY 197/197E
VHF COMMUNICATIONS TRANSCEIVER
I
2.1 GENERAL
SECTION II
INSTALLATION
This section contains suggestions and fa~tors to consider before installing the KY 196/196E/197/197E.
Close adherence to these suggestions will 1assure a more satisfactory performance from the equipment.
2.2 UNPACKING AND INSPECTING EQUIPMENT
Exercise extreme care when unpacking the unit. Make a visual inspection of the unit for evidence of
damage incurred during shipment. If a claim for damage is to be made, save the shipping container to
substantiate the claim. The claim should be promptly filed with the transportation company. It would he
advisable to retain the container and packaging material after all equipment has been removed in the
event that equipment storage or reshipment should become necessary.
2.3 EQUIPMENT INSTAlLATION
The KY 196/196E/197/197E installation will conform to standards designated by the customer, installing
agency and existing conditions as to the unit location and type of installation. However, the following
suggestions should be considered before installing your KY 196/196E/197/197E. The installing agency will
supply and fabricate all external cables. The connectors required are supplien by King Radio.
Interconnect diagrams are Figures 2-6 through 2-13.
NOTE
USE GOOD
QUALITY STRANDED WIRE WITH AT LEAST
600
VOL.T
INSULATION THAT
WILL NOT SUPPORT A FLAME.
~
2.3.1 AVIONICS COOLING REQUIREMENTS
FOR PANEL MOUNTED
EQUIPMENT
The greatest single contributor to increased reliability of all modern day avionics is to limit the
maximum operating temperature of the individual units. While modern day individual circuit descdns
consume much less electrical energy, the watts per cubic inch dissipated within avionics units remains
much the same due to. high density packaging techniques utilized. Consequently, the imoortance of
providing avionics stack cooling is still with us.
While each individual unit may not reguire forced air cooling, the combined heat load of several units
operating in a typical avionics stack will significantly degrade the reliability of the avionics if
provisions for stack cooling are not incorporated in the initial installation. Recommendations on stack
cooling are contained in King Radio Installation Bullentin #55. Failure to provide stack cooling will
certainly lead to increased avionics maintenance costs and may void the King warranty.
2.3.2 Mounting Rack Installation
A. The KY 196/196E/197/197E is mounted rigidly in the aircraft panel. Select a position in the
panel that is not too close to any high external heat source. Remember to allow adequate
space for installation of cables and connectors. Avoid sharp bends and placing the cables too
near the aircraft control cables.
B. When installing two or more panel mounted units in a stack, the mounting trays shall be spaced
.050 inches (.127 cm) apart. Newer style mounting trays have had .025 inch <.064 cm) dimples
built in, top and bottom, both sides, so that two new style trays will automatically be spaced
properly.
C. Refer to Figure 2-4 for the KY 196/196E/197/197E mounting dimensions.
mounting holes.
"'ark anI"! cut the
D. Secure the mounting rack to the instrument panel per Figure 2-4. The rear mounting bosses
should be attached to the airframe by means of support brackets.
Rev. 3, September, 1983
IM0035-4
Page 2-1
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