IK1PMR, PA3LEO, PA0BWL, AA4NN, OE2SNL, DJ5IW, OZ1IKY and DJ7JC will be active from Raratonga Island, South Cook Islands 6 - 13 December 2009 as E51PMR.
Group of radioamateurs from Switzerland will be active from Aitutaki Island (IOTA OC-083), Cook Islands 12 - 30 November 2012 as E51C, E51ABS, E51BZD, E51CHX.
VK3XPT will be active from Rarotonga Island (IOTA OC-013), Aitutaki Island ( IOTA OC-083) and Atiu Island (IOTA OC-083) until 23 November 2013 as E51XPT.