In 1939, KZRH was the fourth commercial radio station to operate in Manila. Then under the management of Bertrand Silen, KZRH aired musical variety shows, comedy skits and short newscasts.
Noong 1939, ang KZRH ang ika-apat na komersyal na istasyon ng radyo sa Maynila.Sa ilalim ng pamamahala ni Bertrand Silen, ang KZRH ay nag ere ng musical variety show, comedy skit at maiksing pagbabalita.