KP4AO Arecibo Observatory 50
2016-06-21 20:18:20
Sunday, November 10, 2013 KP4AO active on 20 meter in celebration Arecibo Observatory 50 Anniversary.
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KP4AO Arecibo Observatory
2019-09-30 18:30:20
KP4AO - 50 ANNIVERSARY for the Arecibo Observatory in Puerto Rico Date: November 10, 2013 9am - 3pm in 20 meter.