I know that electromagnetic waves like radio travel freely without a medium, even through the vacuum of space. But, I also know that physical structures like buildings, walls, bodies can filter and block EM waves from reaching a destination.
Could it be possible that if a loud enough pressure wave was created (e.g. gunshot), it could interrupt a radio signal? Possibly that the air molecules compress to a high density just for a moment, long enough to create a quick filter or interruption/delay in a radio transmission?
Context: I record sound for a living and needed to record gunshots for SFX libraries one day. I use RF transmitters to send wireless audio to my receiver/sound recorder.
I had my radio receiver and audio recorder beside the marksman, while the wireless transmitter was sending me audio from faaar downrange. The idea was to capture the impact of bullets as well as a soft reverb tail.
I noticed that every time a shot was fired, I could hear the gunshot sound in my recorder immediately as per normal, but then a repeating/oscillating RF hit would cycle maybe 10 times while fading to inaudible. I'm familiar with what RF hits sound like from my job, but I've never heard them mimic an audio transmission in a repetitive cycle like this.
This day I was in an isolated location in the Arctic and my RF scans showed absolutely no offending RF interference in the operating range. I was not clipping the mic as these transmitters were not close enough to the gun.
I was thinking maybe some kind of sharp ripple in air density that could make it harder for a radio wave to swim against? Forgive my lack of physics knowledge!
I'm truly puzzled but any insight would be very educational for me. Thanks in advance!