Why do the long range RF folks always use Yagis? Aren't Yagis supposed to be fairly broadband? Aren't there other highly-directional (ie high gain in one direction) antennae which (simply by virtue of being narrow bandwidth) would be better? Or is it that Yagi's broadband-ness allows for more slop in manufacturing, as when you're using pringles & hardware-store washers? BTW seems to me that a (wire-mesh, thank you Morlock) parabolic would be better. The optical scope can look right through the mesh. (Use a night vision scope and IR beacon on your target if the target agrees, or is in a parked car with hot brake pads. In Calif NV scopes can't be put on rifles that launch projectiles but you're not launching anything but photons (in the case of sending Bluetooth commands.) PS: From the photo the Yagi rifles look like they are polarization sensitive, having linear (vs + shaped) directors.