QT2_xyz? call sign(s) on 20M

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kj6wsm
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Joined: 2014/11/29 - 01:43
QT2_xyz? call sign(s) on 20M

Hi to all,
Can some one help me identifying these call signs. They are popping up on 20M over the last few days.
QT2QCK, QT2DPK, QT2XWM, QT2AXH, QT2BJG, QT2XNJ
Are these balloons or water floaters?? The grid is between Hawaii and West coast of US.
Can't find any reference referring to 'QT2' other then 'quick time' so any information would be great.

Best regards and 73,
KJ6WSM