AUXILIARY EQUIPMENT
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7-15
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
Figure 7-12 Transmitter Line to Rail Coupler, 7A399-f
7.3.5.3 Application Installation, 7A399-f
See Figure 2-6 for Transmitter Line to Rail Coupler, 7A399 application installation drawings. The
coupler terminals are connected as follows:
•
Terminals A & B are connected to the wire leads that are connected to the equalizer that
is connected to the appropriate gauge twisted pair track wires, which are connected to
the rails.
•
Terminals C & D are connected to the wire leads that are connected to the sealed
equalizer that is connected to the #14 AWG twisted pair of line wires that are connected
to equipment shelter surge panel terminals that are in turn connected to Terminals A & B
of the 7A388
The Transmitter Line to Rail Coupler, 7A399-f should be used when the distance from the
receiver to the track is between 300 ft. (30.52 m) but less than 2000 ft. (609.6 m), (based on
using 14AWG, increasing the diameter of the wire will proportionally increase the potential
distance from 2000 feet). The Transmitter Line to Rail Coupler, 7A399-f is used in conjunction
with the Line to Receiver Coupler, 7A388.