VAA Connectors (C/D models) (cont)

TM 11-5820-890-10-8

RF PA Control (FIT-A); provides control lines and power supply for the

RF Power Amplifier (PA).

RS-422/RS-423; 19-pin connector for full duplex connections.

DATA-B; 6-pin connector used to couple VAA J4 to RT- BAUD/DATA

port using a W-4 cable. (The W-4 cable is used only for Packet data

mode operations)

DATA-A; 6-pin connector used to couple VAA J5 to RT-A AUD/DATA

port using a W-4 cable. (The W-4 cable is used only for Packet data

mode operations)

RS-232/RS-423; 19-pin connector that couples data transfer

equipment to the VAA; used for FBCB2 connection.

RT-B System Connector; 27-pin system connector for RT-B.

RT-A System Connector; 27-pin system connector for RT-A.

Control-Monitor; 6-pin connector for use of a control-monitor

(C-11291).

Frequency Information Connector; 12-pin connector for frequency

J10

information interface from RT-A and RT-B. (Dual SNAP connection

for FHMUX)

RF PA Control (RT-B); 14-pin connector for control of external RT-B

J11

power amplifier.

GPS In; 6-pin and coax rectangular connector interface for GPS

J12

receivers.

GPS-B; interface between GPS buffer and RT-B.

J13

GPS-A; interface between GPS buffer and RT-A.

J14

GPS RF In; interface for GPS antenna.

J16

Two-wire binding posts used for remote control of RT-A/RT-B via

E1/2A/B

C-11561 (RCU) or SIP RTs used as RCUs.

Power connector; couples vehicle 27.5 VDC power to the intercom.

2-28