a brief description of using an external microphone for getting fpv sound back to your headphone for long and mid range fpv flights.
links below for the microphone used.
https://www.banggood.com/FA-MT01-6-12VDC-Microphone-Pickup-Aerial-Audio-Signal-Collection-For-Camera-FPV-p-982003.html?rmmds=buy&cur_warehouse=CN
https://www.flyingtech.co.uk/fpv-camera-gimbals/mini-microphone-fpv-racing-drones
