On a moonless night over the western part of Africa (almost) the present day, A Disembodied Voice comes up on 121.5:
DV: "Wheere aaree yooo?"
a pause:
DV: "Heeloo, wheere aaree yooo?"
micro seconds later:
"Yer on Guaaaard Maaate"
a slightly longer pause:
DV: "Aah, theere yooo aare!"