Recently my radio started playing some kind of game. When I drive past the Thames-link tunnel it stops what ever is playing radio/aux/disk and displays the message "ALARM". I have non-Sat-Nav unit without screen. That only happens in the Thames-link tunnel.
User manual states that this means emergency message is being broadcasted , similar to TA. However, it seems there are no ways to turn it off thought. Does anyone have seen this message before? I believe either my radio going mad or somebody is really trying to send distress signal in that tunnel (for a ~week, so might stop soon though :D).