AMEC Camino-108, User Manual

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two VHF antennas next to another typically reduces the transmitting range to
both antennas by 50-70%.

GPS is not fixed: If your GPS antenna is not connected or setup correctly, your
transponder will see other vessels fine, but you will not be sending out your
vessel position. All AIS transponders need a good GPS fix before it can send out
any type of transmission. The color and state of the LEDs on the transponder
indicate if the unit is in transmission mode or not.

The location of VHF antenna is directly related to AIS transmitting range. The
VHF antenna should be installed at mast as high as possible.
The silent mode (Tx off) on CAMINO-108 is not working, why?

Silent mode can be configured on CAMINO-108 by using the wires at 12-pin
connector.
Even though my CAMINO-108 is transmitting, why do some vessels
with AIS take a long time to see my vessel name or not see it at
all?

AIS Class B users should keep in mind that Class B transponders do not
broadcast position updates as often as Class A commercial transponders. As
with Class B transponders, the full static information, such as vessel’s names,
the transmission is broadcasted every 6 minutes; however, MMSI and dynamic
information, such as position, update will only be sent out every 3 minutes if
the vessel is moving slower than 2 knots. To add to this, if the receiving party is
using non-standard dual channel receiver (a single channel receiver), then in
perfect conditions, the receiver will get your full static information every 12
minutes and your MMSI and dynamic information every 6 minutes if you are
moored.