Cabling And Wiring - Garmin GTX330 Installation Manual

2.5

Cabling and Wiring

Ensure that routing of the wiring does not come in contact with sources of heat, RF or EMI interference.
Check that there is ample space for the cabling and mating connectors. Avoid sharp bends in cabling and
routing near aircraft control cables.
The following table lists examples of the recommended antenna cable vendors and the type of cable to be
used for specific lengths of cable. Any cable meeting specifications is acceptable for the installation.
The maximum coaxial cable attenuation at 1090 MHz must not exceed 1.5 dB, including connectors. In
the diversity installation the cable loss characteristics must be the same within ±0.1 dB (cables within
4 inches of the same length will have less than 0.1 dB difference in their loss characteristics).
The following table is for reference only, and lists some suitable cable types, along with the maximum
length based on an assumed loss figure of 0.2 dB per connector. Any 50 Ω, double shielded coaxial cable
assembly that meets airworthiness requirements and the 1.5 dB maximum loss figure (including
connectors) may be used.
Max. Length Insertion loss
(feet – [m])
6' 1.3" [1.86m]
7' 7.3" [2.32m]
9' 2.0" [2.79m]
12' 6.0" [3.81m]
15' 5.4" [4.71m]
19' 9.4" [6.03m]
30' 3.6" [9.24m]
Supplier
Information
GTX 330/GTX 330D Installation Manual
190-00207-02
ECS Type
(dB/100ft)
18.0
14.45 3C142B
12.00
8.80 311601
7.12 311501
5.56 311201
3.63 310801
Vendor: Electronic
Cable Specialists
5300 W. Franklin
Drive
Franklin, WI 53132
Tel: 800-327-9473
414-421-5300
Fax: 414-421-5301
www.ecsdirect.com
MIL-C-17 Type
M17/128-RG400
M17/112-RG304
M17/127-RG393
See current issue RG types are
of Qualified obsolete and
Products List are shown for
QPL-17. reference only;
replaced by
M17 type
numbers.
RG Type
RG-400
RG-304
RG-393
Page 2-5
Revision R