Usually, this means taking over some park or camp site, bringing generators, portable equipment, and making it all work for the weekend before you tear it back down. It isn’t much of a Field Day ...
Making the dish a hexagon does have one slight ... That’s not a problem for a parabolic dish; we don’t need the center of the dish anyway because it will always be shadowed by the feed ...
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 ...
This focussing effect is very strong with WAVELENGTHs less than the aperture of the reflector, making it particularly suitable for recording high frequency sounds such as birdsong. Schematic diagram ...