I am building a new node from scratch.atom pc, uri-x, 2 SM50's.. nothing fancy.I am getting a 1/2 second echo, likeyou have another radio on in the room.I did the normal tuneup.got these parameters.rxmixerset=125txmixaset=400txmixbset=0rxvoiceadj=2.725307rxctcssadj=4.019996txctcssadj=300rxsquelchadj=850I tried with/without the rxboost. no change.I have battled this in the past and I justdon't remember what the fix was. It's been a2 years since I have had a node up. trying toget back in the swing of things again.I did bring up alsamixer, the card looks good, mic is not in playback mix.