Here are some frequencies that have been suggested by IARU Region 2 and the Red Chilena Nor Austral de Servicio (RECNA) to be used for earthquake releif efforts. These may or may not have activity, but you might want to monitor them.
3.738MHZ
3.750MHZ
7.050MHZ
7.100MHZ
14.200MHZ
14.350MHZ
21.200MHZ
21.350MHZ
28.300MHZ
28.500MHZ
Dmart
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