Special call sign used for the activations of Cerro de Montevideo Lighthouse (ARLHS URU 009/C.F.CX CX-203 - C.C.CX CX-507).
Speciall call sign for some events and more often during international contests (Juanico, Canelones).
Special call sign used during the International Marcony Days (Punta del Este, Maldonado).
Special call sign used for the activations of Isla de Lobos (IOTA SA-039/C.I.CX CX-017 - ARLHS URU 002/WLOTA LH-0799/C.F.CX CX-203).
Special call sign used for the activations of Punta Jose Ignacio Lighthouse (ARLHS URU 006/C.F.CX CX-204).