GMA Network Inc., commonly known as GMA, is a Philippine media company based in Diliman, Quezon City, Philippines. It is primarily involved in radio and television broadcasting, with subsidiaries dealing in various media related businesses. The majority of its profits are derived from publicity and marketing incomes associated to television distribution.

The Tower of Power is a 777 ft (236.8 m), 120,000 watt TPO mast owned by the GMA Network located in Tandang Sora, Barangay Culiat, Quezon City. It serves as a transmitter facility for GMA's flagship stations, including DZBB-TV 7, GTV's DWDB-TV 27, and Barangay FM's DWLS 97.1 MHz.