[robsh]

If we spam critical EM frequencies drones may fall out of the sky. For example a laser pointer may overwhelm optical sensors, while ultrasonic distance sensors are often used to determine height and proximity to obstacles. Some pilot software may fail gracefully, by safely flying blind and landing gently - but I’m guessing most will fail spectacularly.

[Terr_]

> If we spam critical EM frequencies drones may fall out of the sky.

1. Now everybody within X miles hates your guts because phones and wifi are broken and emergency services can't talk to one another and airplanes have to detour while the FCC is sharping their knives.

2. Criminals who don't care about being nice people will just use frequencies you can't/won't jam, perhaps even the ranges that let the guards' walkie-talkies work, as long as the encoding doesn't lead to telltale noises.

[UI_at_80x24]

A yagi antenna is VERY directional and at these frequencies line-of-sight only. You are aiming into the air. I'd say it would be practically impossible to accidentally interfere with cell-phone communication.

This is a realistic counter-attack (and theoretically easy).

[theendisney]

Many fly back to the pilot if disconected which could be interesting.