Does Wearing a Surgical Facemask or N95-Respirator Impair Radio Communication?

In general, despite wearing a facemask, radio reception accuracy is high (>90%). However, aircraft engine noise and N95 type do appear to adversely affect the accuracy of radio reception. All HEMS pilots and crewmembers should be aware of these radio reception findings when using an N95 respirator during transport. A brief review of the surgical facemask and N95 effectiveness to prevent viral respiratory infections is provided.