Release 1.7
© XCOM Avionics 2005
www.xcom760.com Page
9
XCOM Installation
The XCOM 760 VHF Transceiver installation is straight forward and requires no
special skills. However installation of the wiring harness should be undertaken by a
suitably qualified person with the appropriate skills and test equipment. It is our
recommendation that installers purchase the factory manufactured wiring harness
or that owners have a local avionics repair or maintenance facility install the XCOM
760 for you.
When positioning the radio, ensure that the controls are within easy reach of the
pilot and in a suitable viewing angle when the pilot is sitting and secured in the
pilot’s seat. To mount the radio, position the supplied template on your panel and,
when satisfied with the location, drill and cut through the template in the marked
positions. The face hole is a standard 2.25” inches and the 4 securing holes are
drilled 5/32”.
Please check behind your panel for other components which may be damaged
during drilling.
The radio is mounted by insertion into the panel from the rear and is secured in
place by the 4 mounting screws supplied. Replacement screws are #6-32, 1/2“
long. Do not use longer screws as these may contact internal components and
cause damage to the unit.
Wiring Harness
The wiring harness is the most critical part of the installation and is where most
customers have difficulty. If you are unsure of how to complete this task, please
seek the advice of a qualified person or have the unit installed professionally. To
assist with installation, custom harnesses may be ordered direct from the
manufacturer.
If you decide to manufacture your own harness, please refer to the web site for
advice, techniques and wiring diagrams to assist you.
The following are some basic tips to get you started:
•
Use aircraft quality Tefzel wire. This wire is specially manufactured for use in
aircraft with high quality insulation which will not create harmful vapors in the
event of a fire.
•
Use 18 gauge (AWG) wire for all power supply connections
•
Use wide braided wire for the grounding strap connected to the unit case
•
Other wires should be 22 gauge.
•
The antenna lead-in wire should be made from 50 ohm coaxial cable.
•
Use high quality switches for toggle and PTT
•
Use aviation quality headset and mike jacks (these are available from most
aviation suppliers or from our web site).
