AUXILIARY EQUIPMENT
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7-11
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
7.3.3.3.1 Connecting Line to Rec Coupler 7A388 to Rec Line to Rail Coupler, 7A377-1-f
Terminals A & B connect to the wire leads connected to the shelter surge equipment terminals
that are connected to the #14 AWG twisted pair of line wires which are connected to the
equalizer that is connected to the #10 AWG leads on the 7A377-1-f, (See Figure 9-8 for exact
wiring)
Terminals C & D connect to the wire leads connected to “RX –“ and “RX +” on the GCE Lower
10-pin Connector
7.3.3.3.2 Connecting Line to Rec Coupler 7A388 to Rec Line to Rail Coupler, 7A377-2-f
Terminals A & B connect to the wire leads that are connected to the shelter surge equipment
terminals which are connected to the #14 AWG twisted pair of line wires that are connected to
the equalizer which is connected to the wire leads connected to Terminals C & D on the 7A377-
2-f, (See Figure 9-9 for exact wiring)
Terminals C & D connect to the wire leads connected to “RX –“ and “RX +” on the GCE Lower
10-pin Connector
7.3.3.3.3 Connecting Line to Rec Coupler 7A388 to Trans Line to Rail Coupler, 7A399-f
Terminals A & B connect to the wire leads that are connected to the shelter surge equipment
terminals which are connected to the #14 AWG twisted pair of line wires that are connected to
the equalizer that is connected to the wire leads connected to Terminals C & D on the 7A399-f
(See Figure 9-10 for exact wiring).
Terminals C & D connect to the wire leads connected to “TX –“ and “TX +” on the GCE Lower
10-pin Connector.
The Line to Receiver Coupler, 7A388 should be used when the distance from the rails to the
transmitter or 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 ft./609.6 m). The Line to Receiver Coupler, 7A388 is used in
conjunction with either the Receiver Line to Rail Coupler, 7A377-1-f for a pole-mounted
configuration or the Receiver Line to Rail Coupler,7A377-2-f for a shelf-mounted configuration
(see paragraphs 7.3.4.1 and 7.3.4.4, respectively) or the Transmitter Line to Rail Coupler,
7A399-f.
7.3.4 Rec Line to Rail Coupler, 7A377-1-f and Rec Line to Rail Coupler, 7A377-2-f
NOTE
The Receiver Line to Rail Couplers, 7A377-1-f or 7A377-2-f, are tuned
couplers and should be mounted in a weatherproof shelter located within
100 ft. (30.5 m) of the track connection. The track wire which connects
the Receiver Line to Rail Coupler, 7A377-1-f or 7A377-2-f to the rails
should be #6 AWG.
The Receiver Line to Rail Coupler, 7A377-1-f (see) and the Receiver Line to Rail Coupler,
7A377-2-f (see Figure 7-11), provide line to rail coupling when the receiver is remotely located
from the rail connections as depicted in Figure 9-8 and Figure 9-9.