GMA Channel TV-10 Tacloban audio carrier on a radio receiver

I received GMA Channel TV-10 Tacloban audio carrier in the Tacloban City area using the radio receiver. Since this radio that I use doesn't have a digital display, thus it is hard to determine the exact frequency that I receive. In my perspective, the audio carrier might be a harmonic signal due to the close proximity of the TV transmitter tower thus receiving a harmonic audio carrier signal. My guess is GMA Channel TV-10 Tacloban audio carrier exact frequency might be at 65.75 MHz or frequencies within 64 - 66 MHz. In the future, when I go to a different location, then I will try and receive the audio carrier signal of ALLTV Channel TV-3 Cebu since ALLTV Channel TV-3 Cebu recently revived the transmission few months ago, after 4 years of inactivity since ABS-CBN Shutdown.