Cable Connections - Icom AH-740 Instruction Manual

• Mount the antenna on a mounting base with a 17 mm
(0.67 inches) hole for the M16×2 mm (M0.63×0.08 inches)
threaded mounting stud.
• Rotate the Main Assembly until the ground strap is directed
towards the vehicle body, and then firmly tighten the nut.
• Use only the original hardware and proper tools.

■ Cable connections

1 Connect the coaxial cable and the control cable to the
AH-740.
• Insert the control cable connector into the antenna body
socket, then rotate the connector ring to lock it in place.
2 Wrap the antenna connector with rubber vulcanizing
tape, and then wrap electrical tape* over the rubber
vulcanizing tape to secure waterproofing.
* The rubber vulcanizing tape and electrical tape are not supplied
with the AH-740. Purchase them locally.
3 Secure both the coaxial and control cables to protect the
inside connections.
Connect the coaxial cable and the control cable to the
transceiver.
• Connect the coaxial cable to an appropriate antenna connector.
• Connect the control cable to the D-sub 9 pin type antenna
tuner control connector, or the 4 pin type connector when the
optional OPC-2321 is used.
• See your transceiver's instruction manual for details.
4 Ground the transceiver, AH-740 and shield cable of the
control cable to the ground terminal.
• Coaxial cable and control cable connections
Coaxial cable
Control cable
• Ground strap connection
Bolt (M8)
Ground strap
Flat washer (M8)
Flat washer (M8)
Vehicle chassis
Spring washer (M8)
or body
Nut (M8)
2
INSTALLATIONS
Rubber
vulcanizing
tape, then
electrical
tape.
Fix two of the three holes in
the ground strap using the
supplied bolts, washers,
and nuts.
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2
3
4
5
6
7
11
12
13
14
15
16
17
18
19
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