15.2.6 Antenna Installation
Dynon Avionics does not supply COM antennas, radio coaxial cable, or antenna BNC
connectors. The antenna (including coaxial cable and connector) should be installed
according to the manufacturer’s instructions.
The following considerations should be taken into account when siting the antenna:
• The antenna should be well removed from any projections, the engine(s) and
propeller(s). It should also be well removed from landing gear doors, access
doors or other openings which will break the ground plane for the antenna.
• Separation of COM antenna(s) from transponder(s) and GPS receivers /
antennas: 1 foot (30.5 cm).
• Separation of COM antenna(s) from Automatic Direction Finder (ADF) or 121.5
MHz Emergency Locator Transmitter (ELT): 4 feet (48 inches) (1.22 m).
• Separation of COM antenna from another COM or NAV antenna:
Recommended separation between COM antenna(s), NAV antenna(s), and
ELT antennas is 6 feet (72 inches) (1.83 m). Minimum required separation
between antennas is 4 feet (48 inches) (1.22 m). Ideally, install the primary
COM antenna on the lower fuselage, and install the secondary / standby COM
antenna on the upper fuselage.
• The COM antenna(s) should not be installed in close proximity to SkyView
displays, modules, or servos to avoid RF interference.