What is "dzvv"

Bombo Radyo Vigan (DZVV AM 603 kHz Vigan City) is an AM radio station owned by the Consolidated Braodcasting System Inc., a network owned by Bombo Radyo Philippines, in Vigan City. The station's studio and transmitter are located at Bombo Radyo Broadcast Center, Tamag, Vigan City, Philippines--a stone's throw away from the University of Northern Philippines.

Bombo Radyo Vigan provides news, public service, drama and music for radio listeners in Vigan City, and the province of Abra (in the Cordilleras) and Ilocos Sur, though its signal can be received as far as San Nicolas, Ilocos Norte to the north and the northernmost portion of province of La Union, even Sual, Pangasinan, to the south. A new internet broadcast service enables them to reach listeners around the world. Bombo Radyo Vigan airs everyday from 4:00 am to 10:30 pm, except Holy Week of each year where it signs-off from Maundy Thursday until Black Saturday, and resumes broadcasting on Easter Sunday. with a replay of the day's broadcast aired online from 9:00pm onwards.

Their call sign "VV" is an acronym meaning "Voice of Vigan."