[1]http://newatlas.com/battelles-dronedefender-beam-gun-uavs/39...
[1]http://newatlas.com/battelles-dronedefender-beam-gun-uavs/39...
Getting a video signal back is normally done on 5.8GHz, but there is hardware readily available for 900MHz, 1.2GHz, 2.4GHz, and 3.3GHz. And if you're an enterprising fellow you can send the video on any frequency (NTSC or PAL).
Basically, you can't block it all without serious collateral "damage".
Edit: I've been building and flying drones for over two years, both FPV racing types and larger photography/videography platforms.
ps: I shouldn't talk about the costs effectiveness of terror bombing, but it doesnt' seem like something those guys would do, car bombing seem like a "good" enough approach in general.
As far as I'm concerned, almost all anti-drone devices are complete shams.
A crude suicidal drone with programming to 'avoid obstacles' + 'head to the source of the jamming signal' + 'blow up as near to the target as possible'.
Side note: "Anti Radiation Drone" sounds like some sort of scifi awesome sauce if you ask me.
Here's the US model, which will carry a 66kg HE warhead to 150 km: https://en.wikipedia.org/wiki/AGM-88_HARM