Garmin GPS 400W, Installation Manual

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Page 3-4 GNS 400W Series Installation Manual
Rev. G 190-00356-08
3.6 Installation Materials Required but Not Provided
3.6.1 Optional Accessories Not Supplied (GNC 420W and GNS 430W Only)
The following installation accessories are required but not provided:
ITEM REQUIREMENTS
COM Antenna
Shall meet TSO C37( ) and C38( ). Broad band, 50 , vertically polarized
with coaxial cable (GNC 420W and GNS 430W Only)
VOR/LOC Antenna
Shall meet TSO C40( ) and C36( ). Broad band, 50 , horizontally
polarized with coaxial cable (GNS 430W Only)
Glideslope Antenna
Shall meet TSO C34( ). Broad band, 50 , horizontally polarized with
coaxial cable or low-loss splitter used with the VOR/LOC antenna
(GNS 430W Only)
Headphones
500 nominal impedance (GNC 420W and GNS 430W Only)
Microphone Low impedance, carbon or dynamic, with transistorized pre-amp
(GNC 420W and GNS 430W Only)
3.6.2 Materials Required But Not Supplied (New Installations Only)
The 400W Series unit is intended for use with the standard aviation accessories. The following items are
required for installation, but not supplied:
Wire (MIL-W-22759/16 or equivalent)
Shielded Wire (MIL-C-27500 or equivalent)
Mounting Screws (8 minimum – AN577 6-32 screw with 100° countersink)
Circuit Breakers
Tie Wraps or Lacing Cord
Ring Terminals (for grounding)
Coaxial Cable (RG-400, RG-142B or equivalent – refer to Section 3.10 for addition information)
BNC connectors (such as AMP 225395-6) for the GPS, COM, NAV, and G/S antenna coax
cables.
Coax cable connectors for the GPS, COM, NAV, and G/S antennas. See the antenna installation
instructions for appropriate connectors.