GTX 330/GTX 330D Installation Manual Page 2-5
190-00207-02 Revision R
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
(feet – [m])
Insertion loss
(dB/100ft)
ECS Type MIL-C-17 Type RG Type
6' 1.3" [1.86m] 18.0 M17/128-RG400 RG-400
7' 7.3" [2.32m] 14.45 3C142B
9' 2.0" [2.79m] 12.00 M17/112-RG304 RG-304
12' 6.0" [3.81m] 8.80 311601 M17/127-RG393 RG-393
15' 5.4" [4.71m] 7.12 311501
19' 9.4" [6.03m] 5.56 311201
30' 3.6" [9.24m] 3.63 310801
Supplier
Information
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
See current issue
of Qualified
Products List
QPL-17.
RG types are
obsolete and
are shown for
reference only;
replaced by
M17 type
numbers.
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