YP1WFF - Danube Delta biosphere
Between 23 to 29 june 2010 a hamradio team activated the special callsign YP1WFF from a ship crossing all three arms of Danube river who compose the magnific wild Danube Delta. The most of time it was used YP1WFF/MM and also there was activated four lighthouses from the Black sea:
- ROM 007 - Sf. Gheorghe
- ROM 008 - Sulina
- ROM 018 - Sulina
- ROM 020 - Old LH in Sulina
