The picture towards the end of the antenna in the window is funny, since I personally would be afraid someone would panic seeing it set up.
Don’t like the thought of explaining a radio experiment to a flight attendant at 30,000 feet!
I've been travelling a lot the last 6 months and have really wanted to try out my SDR on the plane, but it looks so sketchy.
Many, many, many years ago (before 9/11 and before cell phones were commonplace) I used to carry my ham radio HT and call on simplex (146.52 for those that know) and make contacts. Those were fun times.
I did raise eyebrows once of the person in the row behind me. I said I was listening to ATC and that seemed to placate him. I do believe most airlines have a blanket ban on radio equipment, even receive only. Some even ban using GPS!
Some are even banning AirTags to cover up the shit job they’re doing with luggage.