- Dec 9, 2009
- Denham Springs, Louisiana
I'm not sure why but all my conventional frequencies are stuck in open squelch. I have a mix of APCO25 and conventional and the unit locks up on every VHF and UHF frequency! I have to lock them all out just to hear the trunked channels. The knob can be all the way to the right and still, all I get is white noise... What am I doing wrong? I'm using the ARC500pro for programming. Sometimes I manually input objects. Can anyone help?