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Mats A

Hi all, and thanks for the messages.

The two messages are identical, so it's plausible that the radio station is capable to transmit a non valid message.
On the other hand the station has been sending correct messages, so the equipment is probably not malfunctioning.

What's good, is that not one ship seems to have replied to these messages, which implies that they are rejected at the receiver end and can be considered as bad packets.
What's bad, is that at least one coast station seems to reply to a non valid message, which may mislead the radio operator onboard to feel that the equipment is OK.
What's ugly, is that i made a different search and found out that the exact same problem exists om more ships.

This is fun, or not...