In the sci-fi novel I’m currently writing, I have a few scenes involving military operations. I like listening to background “noise” that is related to the scene I’m writing.
The tracks contain a fair amount of garbled chatter, some beeping of machinery, telephones ringing, humming, squeaks of doors closing and opening, and clanking of equipment. The one with space static has a more “sci-fi” feel to it, muted voices through a radio, echoey whine of ships, and more reverb. This one is a bit quieter so you may want to up the volume.
Here’s my YouTube Sci Fi Radio Chatter Ambience playlist!
Click here–>Complete Sci Fi Radio Chatter Communications Playlist (more will be added as I find them)