I've only tested this with the DMR mode of the DV4Mini, but I think I am experiencing receiver desense when my TYT MD-380 is close to my DV4Mini. The DV4Mini Tx output is only 12mw max... didn't expect it would be strong enough to desense the front end of the MD-380... but I think that is what is happening. Whenever I was within 7-10 feet or less of the DV4 with the HT I was seeing transmissions (red light on DV4) but hearing nothing. So I reduced the Tx output of the DV4 to about 5.5mw using the output power slider bar... and sure enough... I was receiving audio again on the HT even when close to the DV4 antenna (within about 3-5 feet anyway). It may even need further reduction. Just wanted to post this in case anyone is experiencing "no audio" with their MD-380 and the DV4. You may want to reduce the Tx output on the DV4 Control software. Haven't tried this yet with DStar because my DStar rig is an IC-7100 and is several hundred feet away on the other side of my property. But would be interested if anyone notices a difference with DStar.