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8 HELPFUL HINTS
・ Installing an inline power filter consisting of an LC network may reduce stubborn ignition
noise. These are readily available and are commonly used to suppress noise getting into
stereo systems.
gg. Use shielded spark plug leads.
hh. Try to avoid mounting the dial face in direct sunlight – the plastic may melt.
(It is designed to withstand 80 deg C however cockpit temperatures can well
exceed this).
ii. Notes on using the ICOM boom microphone – this mike will not perform well
compared to a pure electret, there is not a great deal that can be done other
than replacing the microphone.
jj. Make sure your microphone has a wind sock as this will substantially reduce
background noise.
General
The key to a successful radio installation is an effective antenna system. Antenna selection
and proper termination and tuning will make a difference.
The following antennas are recommended:
Sailplanes:
Vertical 1/2 wave coax dipole mounted in the tail. Another choice is a 1/4 wave vertical
mounted in the fuselage for wooden or fiberglass and externally on the top for metal. If
mounted in wooden or GRP aircraft you must provide a ground plane.
Ultralights:
The 1/4 wave ground plane is by far the most popular and makes an effective antenna. Again
a proper ground plane is essential.
Homebuilt aircraft:
As above.
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