Members of United Nations Amateur Radio DX Contest Club (4U1A) will be active as 4Y1A (DXCC: Austria) for International Civil Aviation Day. They will operate on all HF/VHF bands CW, SSB & Digimodes between 7 – 14 of December 2017. QSL via UA3DX Club Log OQRS.
4Y1A – U.N, International Civil Aviation Day