Bitaba birds are not real, but geodes are real rocks. Geodes are rocks that are plain on the outside but can have beautiful crystals on the inside. In the Greek language, geode means shape of the earth, and geodes are round like earth or oblong like an egg.They can be a couple inches or several feet in size.eodes are rocks that are plain on the outside but can have beautiful crystals on the inside. In the Greek language, geode means shape of the earth, and geodes are round like earth or oblong like an egg.
The Instrument Landing System had been invented in the 1930s by Ernst Kramar IEEE Pioneer 1964 at Standard Electric Lorenz an ITT subsidiary.Andrew Alford IEEE Pioneer 1965, under a CAA contract, developed and tested a full system embodying a Localizer and a constant intensity Glide Path.n December 12, 1942, the Office of the Chief Signal officer informed ITT that its 330 megacycle glide path had been selected as part of the Army Instrument Landing System SCS-51. Andrew Alfred left ITT to form his own Consulting organization and was replaced by Paul Adams. Chester Watts left to join the Signal Corps.
The first landing of a scheduled U.S. passenger airliner using ILS was on January 26, 1938, when a Pennsylvania Central Airlines Boeing 247 D flew from Washington, D.C., to Pittsburgh, Pennsylvania, and landed in a snowstorm using only the Instrument Landing System.OC carrier frequencies range between 108.10 MHz and 111.95 MHz (with the 100 kHz first decimal digit always odd, so 108.10, 108.15, 108.30, etc., are LOC frequencies and are not used for any other purpose). See Instrument Landing System (ILS) Frequencies on even-numbered TACAN channels from 18X to 56Y.