Special event station ON3ØON (Oscar November Thirty Oscar November) will be active during the months of March, April, September and October of 2010. Activity is to commemorate the 30th edition of the Belgian 'ON Contest'. The contest was first organized in 1980 to celebrate the 150th anniversary of the Kingdom of Belgium. Since then, the yearly event - lasting just four hours on a local Sunday morning - has become increasingly popular. QSLs for ON3ØON go via the UBA bureau or direct to ON4CAS. A special certificate which can be achieved for free has been created in PDF format. Full details are available here.