It is very strange that when you come across anything radio related, people seemingly come out of the woodwork to tell you not that you are necessarily, actively doing something against regulation, but that there is always potential to be breaking the law.
The subject is mostly academic, but in 18 comments no less than 3 different people are warning about doing something against the rules. It's weird. I don't know of any other subject that provokes responses about "the rules" like this.
I could understand if the article title was "How to Aim Laser Pointers at Airplanes", but attach a long enough wire to an oscillator and people start to get uppity.
On the other side of things, I don't know if you've turned on a shortwave radio recently, but the only thing I hear on mine is switch-mode power supply noise.
Take this Hackaday article from the other day:
https://hackaday.com/2026/10/15/so-you-want-to-make-your-sdr...
The subject is mostly academic, but in 18 comments no less than 3 different people are warning about doing something against the rules. It's weird. I don't know of any other subject that provokes responses about "the rules" like this. I could understand if the article title was "How to Aim Laser Pointers at Airplanes", but attach a long enough wire to an oscillator and people start to get uppity.
On the other side of things, I don't know if you've turned on a shortwave radio recently, but the only thing I hear on mine is switch-mode power supply noise.