Installation
Page 16
3.2 Antennas
3.2.1 VHF antenna:
Connection to a suitable VHF antenna will be required for the transceiver to
receive and transmit.
Transceiver variants (B921/B922/B951/B952) do not have an integrated
splitter and will require a dedicated VHF antenna that covers the AIS
channels at 162MHz.
Integrated splitter variants (B923/B924/B953/B954) will require a VHF
antenna covering 159MHz so it will be compatible with both VHF radio
(156MHz) and AIS (162MHz).
Figure 5 Position of the VHF antenna connector
The VHF antenna connector type is SO-239. It requires a PL-259 mating
connector for the antenna.
For optimum performance the VHF antenna should be mounted as high as
possible, and as far away as possible from metal structures, obstructions or
sources of interference. If another transmitting antenna is installed on the
same vessel we would recommend a separation distance of at least 3m.
3.2.2 GPS Antenna:
All B900 variants have an integrated high-performance GPS receiver &
antenna, and is compatible with the GPS, GLONASS, Galileo, and BeiDou
satellite navigation systems. A dual GPS mode can be enabled using the
configuration tools, allowing you to combine any two of the above systems.
VHF antennaVHF radio
(Only applicable to B923, B924, B953 and B954)
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