I am trying to use conventional discovery on the UHF business band and its generally working but I'm not getting voice on dmr channels. I purchased the upgrade and DMR works fine on regular scan. During discovery it records the transmission of what sounds like dmr digital noise. I've also gotten some that sound like nxdn. This is my first scanner (other than sdr) and I've had it less than a week so I'm sure I've missed a setting or something. Any suggestions how to get DMR voice on conventional scans?