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.
1 HISTORY OF RADIO FLIGHT NAVIGATION SYSTEMS PREFACE The development of instrument landing systems and flight navigation systems go hand in hand and as such their history is presented together in this book.NSTRUMENT LANDING SYSTEM GROUND STATIONS After the use of the four-course dot/dash signals at 480 MHz in 1942 in Great Britain, a landing system was developed in the USA in 1943/44 for military purposes which was soon to be used for civilian purposes.