I use my 5 year old SDS 200 to monitor UASI in Mecklenburg County. I'm retired and am home most everyday in NW Charlotte with SDS200 frequently on 12-16 hours per day. In the past month or so I've noticed received audio sometimes briefly sounds "robotic" for just a second or so. I hear this mostly on CFD Alarm talkgroup. Antenna is an 800MHz BNC. No programming changed during 5 years except for firmware, DMR, and Waterfall upgrades. Antenna is an 800MHz BNC. Anyone else noticed this?