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SIM Cards
Antennas
Flightcell supplies a range of antennas, the choice of which will depend on SVS modem
configuration:
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Single Iridium modem: Use a Flightcell single Iridium antenna, P/N ANP_00045
»
Dual Iridium modems: Use two Flightcell single Iridium antennas, P/N ANP_00045 with a
minimum spacing of 1m between the antennas.
Installation of Iridium Antennas
Installation drawings for the antennas are available at www.flightcell.com/resources.
The Flightcell Iridium antenna should be installed on the top of the aircraft where it will have an
unrestricted view of the sky, mounted as close to horizontal as possible. The following should be
considered when determining a mounting location:
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Maintain good separation from other antennas. Preferred separation is 1m from L-band
(GPS), TCAS or transponder antennas, but a lesser separation can be applied if there is
limited space on the aircraft.
»
On a helicopter, the antenna can be installed below the rotor blades, but avoid installing it
close to the rotor hub, as the hub and inner rotor can block the antenna's view of the sky.
Keep coax cable lengths short to minimize attenuation of transmit and receive signals.
Guidelines for Antenna Cables
Iridium antenna cables must be selected to keep signal loss within accepted levels. Total signal
loss on the Iridium connection between the SVS and the antenna should not exceed -3dB at
1626MHz.
Refer to the table below for the recommended length of cables.
Cable Specification
RG58C/U or RG400
LMR400
LMR600
It is recommended that the antenna cable be reduced to RG58 for the last 300mm to the SVS to
assist with installation in the panel.
SIM cards
The SVS may have one or two Iridium modems.
The primary modem must be configured for Safety Voice Services.
The secondary modem may be configured for Safety Voice Services or may be configured for
standard Iridium services.
A SIM card is required for each Iridium modem. If the modem is used for Safety Voice Services,
then a SIM for Safety Voice Services is required. This must be obtained from an Iridium service
provider authorised to provide this service.
117-00002 Flightcell SVS Installation Manual Rev 1.2 Effective date 20 September 2023
Maximum Cable Length
Up to 3m
Up to 17m
Up to 26m
Page 9
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