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POWERFLARM FUSION
INSTALLATION MANUAL
Date: 2020-11-10
Version: 1.0
Page: 22 of 38
FLARM Technology Ltd
Hinterbergstrasse 15
CH-6330 Cham
Document Number:
FTD-077
2.5.2
Internal Antennas
For internal antennas, follow the requirements below.
Use only the antennas supplied with the device or other approved or
acceptable antennas as specified in Appendix B.
Do not extend or interfere with the attached antenna cable. If the cable is
extended or modified in any way, the relevant requirements in Section 2.5.1
apply.
Give the antenna as much clearance as possible, from any material.
Antennas should be spaced at least 30 cm apart, including other antennas
like COM/NAV, XPDR, etc.
Note:
In aircraft with an electrically heated windshield, the windshield acts as a
Faraday cage and blocks radio signals. Internal antennas may not be
mounted behind such windshields.
In addition, the following requirements are applicable for the specific antenna
installations.
2.5.2.1
FLARM A/B
Note:
The internal FLARM antennas shipped with the device have a RED marking.
The internal FLARM antennas for Fusion are suitable for internal use in fiberglass
gliders only. External FLARM antennas should be installed in other aircraft. See
Section 2.5.1 for details.
Ensure that the antennas are not in contact with or close to any other object
through which there might be an electrostatic discharge, e.g. the canopy. When
two FLARM antennas are installed, ensure that they are at least 30 cm apart.
In gliders where internal FLARM antennas may be used, ideal locations for the
internal FLARM antennas are:
On the glareshield, in front of the compass (minimum 10 cm from the
magnetic compass)
In the tail fin of the airplane, if not metal or carbon fiber. Use only low-
attenuation RF cables (see Section 2.5.1).
Behind the pilot’s head in the fuselage (not in gliders with metal or carbon
fiber fuselage)