Bridge Channels 13 And 67; What Is The Range For Ais Receivers - Standard Horizon MATRIX AIS/GPS GX2200E Owner's Manual

release the PTT button on the mic. Then switch to the new channel. When
the new channel is not busy, call the other vessel.
After a transmission, say "over," and release the microphone's push-to-talk
(PTT) switch. When all communication with the other vessel is completed,
end the last transmission by stating your Call Sign and the word "out." Note
that it is not necessary to state your Call Sign with each transmission, only at
the beginning and end of the contact.
Remember to return to Channel 16 when not using another channel. Some
radios automatically monitor Channel 16 even when set to other channels or
when scanning.
4.6

BRIDGE CHANNELS 13 AND 67

Channel 13 is used at docks, bridges and by vessels maneuvering in port.
Messages on this channel must concern navigation only, such as meeting
and passing in restricted waters.
Channel 67 is used for navigational traffic between vessels.
By regulation, power is normally limited to 1 Watt on these channels. Your
radio is programmed to automatically reduce power to this limit on these
channels. However, in certain situations it may be necessary to temporarily
use a higher power. See Page 29 (
override the low-power limit on these two channels.
4.7

WHAT IS THE RANGE FOR AIS RECEIVERS?

Since AIS uses similar frequencies as a marine VHF radio, it has similar
radio reception capabilities - which are basically line of sight. This means that
the higher the VHF antenna is mounted, the greater the reception area will
be. Reception from Class A vessels that are 32 or even 48 km away on open
water is not uncommon as their antennas are mounted high off the water.
Class B transponders use lower power for transmissions; therefore you can
expect Class B vessels to be acquired when they are 8 to 16 km away.
The GX2200E does not require a special marine VHF antenna to
receive AIS transmissions. The GX2200E does not transmit AIS
signals, it is NOT recommended to use an antenna dedicated for AIS
operation.
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key) for means to temporarily
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