Don't do it, it ain't worth it. Little more than a decade ago, I posted on another website about strange planes flying out of a clandestine airbase. Wasn't long I got a visit from a guy in a black crown vic, very congenial, we talked for several hours. I got the message.Hey there, I do military aircraft spotting and photography and I recently got an SDS100 to give me some early warning for approaching aircraft. The SDS100 lets me record what I receive which is awesome because I can listen back later and get callsigns and such. I post my photos and sometimes video on social media and I recently thought it might be cool to edit the video to include the audio I recorded from that specific aircraft. Is it legal to post this audio on the internet if it is a part of a video of the aircraft? I tried to do some research and I couldn't find anything, but because it's the military, I thought it would be smart to get some advice before I do it. Perhaps its one of those things where if you have to ask, you probably shouldn't, but I am not privy enough to know. (its not a live stream or youtube or anything like that, just the occasional video on my own social media accounts)
I wouldn't post anything received from a military base that is not shared with civilian aviation. If shared, that could be a grey area. Best not to do it.