Where is the DA box?  From an article published in the 1990s.
The author now wishes to remain unnamed:  I remember where I was
when the MV "Mi Amigo" sank in March 1980. I lived in Tottenham
almost in the notorious Broadwater Farm Estate, and Radio
Caroline had been playing non-stop music "storm" tapes most of
the day. On the top of every hour they'd come on the microphone
live to relay a collection of number codes for the office. The
signal was getting quite weak. Eventually the guys on board
explained properly that the ship was taking on water, closed
down, and were rescued by lifeboat whilst the ship went down to
its final resting-place.  In those days, before cellphones were
invented, communication from ship to shore was a bit hit or
miss. The main method was at 8pm each night when the disc jockey
would read out a collection of numbers. This would be from a
pre-discussed list of many different phrases. One list was held
on board and one was in the office. Phrase 12 (for example)
might be "Diesel is low, b