TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TDFM-9100 Installation Instructions
TiL 13RE483A
2-10
2.20
ANTENNA SELECTION AND INSTALLATION CONSIDERATIONS
Antenna installations will vary according to the number / type of bands installed in the TDFM-
9100, types of antennas selected and space available on the aircraft. The materials list above
contains many but not all antennas available. If dual band RF modules are installed in the TDFM-
9100, it is suggested to use a single connector, multiband antenna for each of the RF modules
installed. When single band modules are installed, a single band antenna should be used. If the
TDFM-9100 has more than one single band module installed that are on different frequency
bands, a single multiband antenna with separate connectors or a multiband antenna with a
coupler can be used if the frequencies in use are not multiples of each other. For example,
transmitting near 150 MHz on VHF may interfere with frequencies near 450 MHz on the UHF
band. Antennas should be spaced as far as possible from each other with the Comm antennas on
the opposite side (top or bottom) from the FM antennas.
