Philippine commercial broadcaster ABS-CBN is set to return to its former channel slot almost four years after the country’s National Telecommunication Commission (NTC) ordered it to sign off the airwaves. The return was marked by a contract-signing event at the Brittany Hotel in Bacoor, Cavite, about 25 kilometers south of Manila, on Tuesday (Apr. 23) with Advanced Media Broadcasting System (AMBS), a media firm owned and operated by the Villar family, of which some of its members are currently serving in the Philippine government. Several members of the Villar family, including businessman and…