Telecorporación Salvadoreña since 1985. The channel was founded on December 4, 1958 and began broadcasting one month later as a YSU signal operated by Canal Cuatro S.A. de C.V.(El Salvador) is the second Salvadoran channel owned by
YSU-TV (Canal 4)
Canal 4 debuted with a mailman who checks the primitive television. The TV screen showed as a hybrid name: The big letters were "TV" and the words "Canal 4" (Channel 4) below. Outside of the television, the logo showed the callsign on the top left position.
As of 1966, the logo showed as a red logo shape with the number four inside of the eye. The logo was introduced as TV screen shape.
Canal 4's now famous current logo was introduced in July 1969 with a red square background and similar to the previous logo, based on the CBS logo it's symbolized as a vision of TV spectator.
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