u/qbit1010

For example, if it’s something spiritual…bring in a few renowned psychics or an ouija board lol. Not very scientific but would make an interesting episode.

On 2nd thought more scientific, listen in to the audio feed on those frequencies. Determine if there’s actual data being transmitted maybe.

Otherwise why aren’t there ancient ghosts/hauntings? I don’t often hear of a caveman, Ancient Greek or Roman haunting a place. Seems to be mostly apparitions of just the last 500-1000 years of history in most of the reports and stories around the world.