117-00020 Rev 4.0 Effective Date: 28 October 2022
Page 8 of 12
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).
Guidelines for the antenna cable
The antenna and associated cabling should have a nominal impedance of 50Ω with a maxi
mum
attenuation of 3dB over the cable run. Following are the recommended cables specifications.
Cable Length Cable Specification
Up to 3m
RG58C/U or RG400
Up to 6.5m
LMR200 or RG142A/U-9006 cell foil
Up to 8m
RG213
Up to 17m
LMR400
Up to 26m
LMR600
