It would still need to be a turret with a focused beam as drone controls operate on the same frequency range as wifi and bluetooth so if you still want those to work in the building you can’t just fill the air with enough noise to block a drone. And if you want to stop one on auto-pilot you need to scramble GPS signals which would be a very bad idea when nearest airport just 3 miles away with one one the runways aligned directly with the White House. And even that’s all just assuming it’s actually using standard frequencies and not something custom.
It would still need to be a turret with a focused beam as drone controls operate on the same frequency range as wifi and bluetooth so if you still want those to work in the building you can’t just fill the air with enough noise to block a drone. And if you want to stop one on auto-pilot you need to scramble GPS signals which would be a very bad idea when nearest airport just 3 miles away with one one the runways aligned directly with the White House. And even that’s all just assuming it’s actually using standard frequencies and not something custom.
So while anti-drone systems don’t go BRRRT, they can still end up looking like something that could.