cockpit recording

Hey guys - I've been trying to figure out how to effectively record cockpit radio - I've used a splitter but no matter how much I lower or increase the volume in cockpit the audio redlines in the gopro. Has anyone else come across this issue? Not going to buy a dedicated recorder with an...

I’m attempting to record audio from my flight lessons. I don’t need the video, just audio to review when I’m not up in the air. I watched a few videos and looked around the web and so far I cannot find to much information. I have some items I found on amazon that I think will work but how can I...