A parabolic antenna brings radio waves from a particular direction in ... SETI observations use three beams to observe three stars (or positions on a sky survey grid) at the same frequency at the same ...

Also called a "dish" or "mirror," parabolic antennas are used for satellite signals and planetary telescopes. The reflective mirror design can also emit energy such as in a flashlight or ...

My custom-built, easily transportable parabolic antenna immediately sprang to mind. The idea of a three-meter diameter parabolic dish was rejected for something a little more practical and a ...

“The RGP Series offers an ultra-wide band to eliminate the need for customers to purchase multiple antennas to support multiple frequencies,” claimed Raltron v-p of sales Ross Weiss. It “features a ...