Request Message 24 (Class B); Send Ais Message - DANPHONE Futronic MKII User Manual

Request Message 24 (Class B)

Using the same setup as with Request Message 5, you can also request a Message 24 from
Class B transponders. MSG 24 is divided in two: MSG 24A presenting the ship's name and
MSG 24B providing information of the ship's call sign and dimensions, etc.
It is a requirement that the MMSI number registered in the test box is identical with the MMSI of
the AIS transponder to be tested. Please check and change number, if required, using the Edit
ship's MMSI menu. See Page 12.
Select Request MSG 24 and press OK. Then, select AIS frequency and press OK again.
The test box will automatically synchronize with the AIS transponder; transmit the request and
then switch to receiving mode. Wait for the transponder to respond and check the MSG 24
information appearing on the test box display.
The received MSG 24 information will also be stored in the test box memory.
Examples of Printout from the Memory:
AIS # 1 Time/date: 12:29:55 / 20-01-2012
Message ID: 24 MMSI: 987654321
Name: POLARIS
AIS1 Freq.: 161,974.7 kHz Fwd.: 2.0 Watt Rev.: 0.0 Watt VSWR: 1.00
AIS # 1 Time/date: 12:29:55 / 20-01-2012
Message ID: 24 MMSI: 987654321
C.SIGN: CLASS B
Dimension of ship: A: 4m B: 4m C: 1m D: 1m
AIS1 Freq.: 161,975.1 kHz Fwd.: 1.9 Watt Rev.: 0.0 Watt VSWR: 1.00

Send AIS message

The test box can transmit a fixed default AIS message or a custom-made message. Following
the transmission, you can check that the AIS transponder receives the AIS message correctly.
Use this setup:
The default AIS message already loaded in the test box is a MSG 1 that includes a vessel
position of 45°N 45°W.
To transmit the message, just select Send AIS MSG on the test box and press OK. Then, select
AIS frequency and press OK again to send the message.
SIGNAL
COMBINER
20 dB
Attenuator
30
AIS TRANSPONDER
ANT