That equipment is highly directional in nature for one.

Highly directional antennas need to be significantly larger than the wavelength.

Its antenna is highly directional, and is pointed straight up.

Like slow-motion bombs, exploding in a highly directional way over a period of ten days.

Then, using highly directional microphones, they recorded calls of the males in the various neighborhoods.

Highly directional antennas do not provide a sufficient signal to support a back course.

The ground antenna is highly directional but cannot be designed without sidelobes.

It's a highly directional and therefore concentrated beam coming out of it.

It was a highly directional unit which required the operator to face the path of the aircraft.

Exactly at midnight I turned it on and the narrow, highly directional signal blasted up into space.