Question: When was the Sistema de Radiodifusoras Culturales Indígenas station known as `` The Voice of the Four Peoples `` first launched ?

text: Sistema de Radiodifusoras Culturales Indígenas
Stations
XETPHXEVFS/XHSEBXEZVXETLA/XHPBSDXEPURXETARXHPET/XEPETXEANTXEGLO/XHGJOXEZONXEOJNXEJMNXEJAMXEQIN/XHSQBXECTZXEXPUJXEETCHXECOPAXHTUMI/XETUXXHCARH/XECARHXHNKA/XEFELXENAC Locator map of SRCI stations The SRCI operates 21 primary radio stations , all of which transmit on AM and seven of which are high-power FM stations . It also operates four four 10-watt FM stations in Yucatán . The 21 main stations transmit for an average of 12 hours a day , during daylight hours , covering 928 municipalities with high levels of indigenous inhabitants . The stations ' potential audience comprises 5 million speakers of indigenous languages and more than 22 million Spanish speakers . They all broadcast an array of programming in both Spanish and the particular native languages spoken in the coverage area . Four stations are AM-FM migrants : XHCARH , XHPET , XHTUMI , XHNKA . XHCARH and XHPET are required to maintain their AM frequencies because they are the only radio service for certain communities in its AM coverage area . The second and third stations reacquired their AM frequencies under new callsigns . In 2016 and 2017 , the CDI applied for and received FM radio stations that provide simulcast service for XETLA ( XHPBSD-FM 95.9 ) , XEVFS ( XHSEB-FM 91.7 ) , XEGLO ( XHGJO-FM 88.3 ) , and XEQIN ( XHSQB-FM 95.1 ) .
N/A
Call sign Launched Transmitting from Coverage Languages Frequency
XEZV 10 May 1979 Guerrero ( Tlapa de Comonfort ) Guerrero Oaxaca Puebla Nahuatl Mixtec Tlapanec 800 AM
XETLA XHPBSD 15 September 1982 Oaxaca ( Tlaxiaco ) Oaxaca Guerrero Puebla Mixtec Triqui 930 AM 95.9 FM
XEPUR 2 October 1982 Michoacán ( Cherán ) Michoacán Purepecha 830 AM
XETAR 11 November 1982 Chihuahua ( Guachochi ) Chihuahua Sinaloa Durango Tarahumara Tepehuano 870 AM
XHPET XEPET 29 November 1982 Yucatán ( Peto ) Yucatán Quintana Roo Campeche Yucatec Maya 105.5 FM 730 AM
XEVFS 27 April 1987 Chiapas ( Las Margaritas ) Chiapas Guatemala Tojolabal Mam Tseltal Tsotsil Popti 1030 AM
XEANT 28 September 1990 San Luis Potosí ( Tancanhuitz de Santos ) San Luis Potosí Hidalgo Querétaro Veracruz Nahuatl Pame Wastek 770 AM
XEGLO XHGJO 18 November 1990 Oaxaca ( Guelatao de Juárez ) Oaxaca Veracruz Zapotec Mixe Chinantec 780 AM 88.3 FM
XEZON 20 November 1991 Veracruz ( Zongolica ) Veracruz Oaxaca Puebla Tlaxcala Nahuatl 1360 AM
XEOJN 14 December 1991 Oaxaca ( San Lucas Ojitlán ) Oaxaca Puebla Veracruz Mazatec Cuicatec Chinantec 950 AM
XEJMN 3 April 1992 Nayarit ( Jesús María ) Nayarit Jalisco Durango Zacatecas Cora Huichol Tepehuano Nahuatl 750 AM
XEJAM 5 May 1994 Oaxaca ( Santiago Jamiltepec ) Oaxaca Guerrero Mixtec Amuzgo Chatino 1260 AM
XEQIN XHSQB 15 June 1994 Baja California ( San Quintín ) Baja California Mixtec Zapotec Triqui 1160 AM 95.1 FM
XECTZ 21 August 1994 Puebla ( Cuetzalan ) Puebla Hidalgo Veracruz Nahuatl Totonac 1260 AM
XEXPUJ 22 January 1996 Campeche ( Xpujil ) Campeche Quintana Roo Yucatec Maya Ch'ol 700 AM
XEETCH 19 February 1996 Sonora ( Etchojoa ) Sonora Sinaloa Chihuahua Mayo Yaqui Guarijio 700 AM
XECOPA 17 July 1997 Chiapas ( Copainalá ) Chiapas Tabasco Zoque Tzotzil 1210 AM
XHTUMI XETUX 12 May 1998 Michoacán ( Tuxpan ) Michoacán Edo . de México Querétaro Mazahua Otomi 107.9 FM 1010 AM
XHCARH XECARH 1 August 1998 Hidalgo ( Cardonal ) Hidalgo Querétaro Veracruz San Luis Potosí Ñha-ñhu Nahuatl 89.1 FM 1480 AM
XHNKA XEFEL 15 June 1999 Quintana Roo ( Felipe Carrillo Puerto ) Quintana Roo Yucatec Maya 104.5 FM 1030 AM