TT21/TT22 Transponder Installation Manual 22 August 2017
00560-00 AP
______________________
26 Trig Avionics Limited
Avoid routing the cable round tight bends.
Avoid kinking the cable even temporarily during installation.
Secure the cable so that it cannot interfere with other systems.
5.11.3 TNC Connector
This section describes the technique for attaching the antenna cable to the
supplied TNC connector.
If a low-loss cable is needed that has too large a dielectric diameter to fit the
supplied connector, a short length (up to 150mm or 6 inches) of smaller cable
may be used with suitable mating connectors to adapt to the transponder
connector.
The supplied connector can be completed using a wide range of commercial
crimp tools (for example the Tyco 5-1814800-3). The die apertures for the
inner pin and the outer shield should be approximately 1.72 mm and 5.41 mm
respectively.
Strip back the coax cable to the dimensions in the table, as shown in
the diagram below. Slide 25 mm (1 inch) of heat shrink tubing over
the cable.
Slide the outer crimp sleeve over the cable – it must go on before
securing the centre contact.
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