They will operate on HF Bands.
QSL via CT1REP.
Information from their QRZ page:
CR50Y - Event marking the 50th anniversary of April 25, 1974, the April revolution, opened the doors to freedom, democracy, rights and peace that we celebrate today. A group of operators will use the special call sign CR50Y. Activity will be on CW, SSB and digital modes on all bands. QSL direct or via the REP QSL Bureau to CT1REP.
