Installation and Operation Manual

Installation
Page 24
Figure 9 Position of the GNSS antenna connector
Step 3 - Connecting the VHF antenna
Route the cable from the VHF antenna to the AIS transceiver and connect to
the VHF connector on the AIS transceiver as shown in
Figure 10.
The standard transceiver variants (B921, B922, B951 and B952) will require
an AIS antenna (tuned to 162MHz) for optimum performance.
Transceiver/splitter variants (B923, B924, B953 and B954) will require a
broadband antenna (tuned to 159MHz) so it will be compatible with both VHF
radio (156MHz) and AIS (162MHz).
The connector type on the AIS transceiver is SO239. The VHF antenna
requires a PL259 connector to mate with this. If your VHF antenna does not
use this type of connector please contact your dealer or support@em-
trak.com for details of available adapters.
Figure 10 Position of the VHF antenna connector
GNSS antenna
GNSS antenna
B921, B922, B951 and B952
B923, B924, B953 and B954
B921, B922, B951 and B952
VHF antenna
VHF antenna
B923, B924, B953 and B954