I use a Motorola 7550 and TYT MD380 tried both calibrated with both tried two different internet sources did both Parrot on BM server 3102 did 9999 internal echo changed frequency from 433 moved up 446 mhz my calibration on both radios from 200 hz-400 hz my first gen Shark Open Spot works fine with ...

So I have tried two different radios two different internet sources and re-calibrated the unit and I'm told my audio is warbling my open spot one works fine on my internet thinking its a bad unit?