L3 Technologies AISA1 Manuale Utente

Dimensions of ship - to nearest meter.

Location on ship where reference point for position reports is located.

Type of position fixing device - various options from differential GPS to un-

defined.

Draught of ship - 1/10 meter to 25.5 meters [note “air-draught” is not pro-

vided].

Destination - 20 characters are provided.

The International Telecommunications Union World Radio Conference in 1997 desig-
nated two VHF radio frequencies: 161.975 MHz (AIS1, or channel 87B) and 162.025
MHz (AIS2, or channel 88B) for AIS. In the US, the first channel is owned by Mari-
TEL, a public coast station operator, and the second by the federal government. The
USCG signed a Memorandum of Agreement with MariTEL for use of AIS 1, and has
authority from the National Telecommunications and Information Administration to
use both AIS1 and AIS 2 US-wide for AIS operation. The USCG has asked the Fed-
eral Communications Commission to authorize any US vessel to operate AIS on
these two channels under its existing ship station license. The FCC released a No-
tice authorizing operation of AIS under a ship’s existing station license.

This section lists the input sentences received by the L-3 ProTec AIS Transponder.
The input sentences are categorized as Pilot, Long Range, and Sensor, which are
listed as follows:

ABM, BBM, AIR, VSD, SSD, ACK, ACA, AIQ

LRI, LRF

RMC, VTG, ROT, HDT, GNS, GLL, GGA, GRS, GSA, GST, GSV, ZDA, GBS, DTM,
VBW