I have had my unit since february, worked great for 4 months and then I noticed a drop in crisp audio and a drop in decoding trunked systems,especially motorola 800 and uhf types.THEN this week it went dead as far as audio?? It would scan,show a conv frequency or trunked id number with no audio?? I entered a trouble ticket to gre support and received a reply that it COULD be the radio?? Whats up with that response?? I think SOOO!!! Has anyone else experienced this? And if so,how did you fix it?? I changed the firmware to an earlier version,reset the global settings to default, and alsio initialized the unit to factory settings with no luck!!! Help!!!!!!!!!!