JA1JQY, JA3MCA, JA8VA, JA1KJW will be active from Kingdom of Tonga until 15 November 2012 as A31JY, A31MA, A31VA, A31KJ.
They active on 160 - 10m CW, SSB, RTTY.
QSL info:
A31JY via JA1JQY.
A31MA via JA3MCA.
A31VA via JA8VA.
A31KJ via JA1KJW.