ˈæftɚɹ ɪnˈɪʃəli bˌiːɪŋ ˈɔːθɚɹˌaɪzd æz ˌɛksˌiːˈɛnˌɛfˈɛm, ɐ kˈaʊntɚpˌɑːɹt tʊ ˌɛksˌiːˈɛnˌeɪˈɛm sˈɪkshˈʌndɹɪd nˈaɪnti, ˌɛksˈeɪtʃpˈɑːp wʌz ɔnðɪ ˈɛɹ baɪ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvən.
After initially being authorized as XEN-FM, a counterpart to XEN-AM 690, XHPOP was on the air by 1977.