Page 2-4
Installation Instructions
TQG191-IM
Rev 0: 28 Feb 2019
KTX2
Installation Manual
2.5.1 Optional Installation Kits – KTX2
Installations using the NexNav Mini may order the NexNav Mini installation kit. Refer to Table
2-4 for details.
Table 2-4: NexNav Mini GPS Interface Kit
Part Number
Description
Qty
312873.0100
Harness for KTX2 interface to NexNav Mini
1
2.5.2 Antenna Cables
Table 2-5 lists examples of the recommended L-Band antenna cable vendors and the type of
cable to be used for specific lengths of cable. Any cable meeting these specifications is
acceptable for the installation.
Table 2-5: Coaxial Cable Specifications
Insertion Loss
(dB/100ft)
[1]
Carlisle IT Type
MIL-C-17 Type
RG Type
18.5
N/A
M17/128-RG400
RG-400
11.1
N/A
M17/112-RG304
RG-304
9.2
N/A
M17/127-RG393
RG-393
15.2
3C142B
N/A
N/A
9.2
311601
N/A
N/A
7.5
311501
N/A
N/A
5.8
311201
N/A
N/A
3.8
310801
N/A
N/A
[1]
RG type coaxial cable insertion loss can vary significantly between manufacturers. The insertion
loss for RG type cables shown in this column is considered 'worst case'. Refer to the cable
manufacturer's specification sheet for actual attenuation (insertion loss) for the cable being used.
2.6 PERIPHERAL EQUIPMENT INTERFACES
Only the equipment listed in this section is recommended for use with the KTX2 system.
2.6.1 GPS Units and GPS Antennas
A WAAS GPS that is compliant with TSO-C145c must be connected to pins 2 and 13 to meet
the requirements of TSO C-166b for Rule-Compliant Mode S (ES) ADS-B Out. Note that the
NexNav mini is currently the only compatible GPS source.
NOTE
This AML STC does not confer FAA approval for installation of a
GPS receiver and a GPS antenna
. Unless these installations have
previously received FAA approval, or are covered by a Manufacturer’s
STC, additional FAA approval will be required. Also consult the
applicable Aircraft Structural Repair Manual for approved locations,
methods and additional restrictions pertaining to these installations.
