ðə hˈɪstɚɹi ʌv wˈʌnhˈʌndɹɪd.nˈaɪn ˌɛfˈɛm ɪn mˈɛksɪkˌoʊ sˈɪɾi bɪɡˈɪnz wɪð tˈɛlᵻvˌɪdɪoʊ, ˈɛs.ˈeɪ., ɹᵻsˈiːvɪŋ ɐ kənsˈɛʃən fɔːɹ zɪˈɔɪˌɛfˈɛm ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən.
The history of 100.9 FM in Mexico City begins with Televideo, S.A., receiving a concession for XEOY-FM in 1957.