| Installing the Flightcell Iridium modem
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| Flightcell Iridium Modem Installation Manual
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4.3
Guidelines for fabricating the wiring harness
For aviation applications, all wiring should be carried out with aviation specification fireproof cable.
Screened cable should be used where indicated in the wiring diagrams. Where cable screen connections
are not explicitly shown, they should be left unterminated.
The following minimum wiring specification is recommended:
Power supply - 22 AWG (0.325mm2)
Other cabling - 24 AWG (0.205mm2).
4.4
Guidelines for the antenna cable
T
he antenna and associated cabling should have a nominal impedance of 50Ω with a
maximum
attenuation of 3dB over the cable run.
The antenna cable run length and intended frequency bands of operation should be checked before the
antenna cable type is selected to ensure the above requirements are met.
