Five special calls, representing the five rings of the Olympic flag, are QRV.
The calls are BT1OB, BT1OJ, BT1OH, BT1OY and BT1ON. The last letter of the callsign corresponds to the color of each of the rings of the Olympic flag - Beibei (Blue), Jingjing (Black), Huanhuan (Red), Yingying (Yellow) and Nini (Green).
Beijing 2008 Olympic Games Special Event Amateur Radio Station
