in july 1978, bbc, rpn and another benedicto-owned network, the intercontinental broadcasting corporation (ibc) (which originally aired from san juan del monte), transferred to the broadcast city compound in old balara, quezon city, with the transmitter located along panay avenue, quezon city (now being used by abs-cbn), with the then newly upgraded 35 kw transmitter for better broadcast reception. this left channel 4 (a frequency formerly owned by abs-cbn and taken over by the government through national media production center (nmpc) as government television in 1974) at the abs-cbn broadcast center complex, then renamed mbs broadcast plaza (mbs being maharlika broadcasting system, the name that channel 4 acquired in 1980).