This was an earlier precursor to RACON. The tower features a light and a racon, or radar transponder, and can be ascended. The lighthouse also emits a racon signal "T". The light has a racon showing the letter "B". The rocks are also marked using racon with a Morse letter T on radar displays. A racon showing Morse code "M" (--) was added in 1996. In August 2007, Racon joined Charlton Athletic. On 24 January 2013, Racon joined Portsmouth on a one-month emergency loan deal.