Hi! I've just finished assembling my Bitx40, and when I turn on the radio, I hear a terribly loud noise (link to listen below). The radio works fine, because I can hear some operators behind that noise, but I cannot tune the radio loud enough to hear them properly, as the noise is extremely loud even on the smallest volume. I don't really know what's happening gere. Any help?
The noise: https://www.youtube.com/watch?v=1j0ywo45N7I
