I know I just posted a thread but I didn't want to hijack it so I started a new one.. There is a setting on the analog and digital side of my PSR 500 that will let me set a certain sound (BEEP) at each transmission.. I have set them on and tried different ones, It will not do any of that, Can anyone explain why? Does there have to be a certain type of P25 system before it will work? I've tried it on SEVERAL different systems/frequenies digital and analog, Can anyone say why it won't work? Just curious..