Ernst Alexanderson Born: 1872 Birthplace: Sweden High frequency alternator?Alexanderson built a high frequency? Andrew Alford Born: 1904Birthplace: Samara, Russia Localizer antenna system?Alford invented and developed antennas for radio navigation systems, including VOR and instrument landing systems,? Herman Affel Born: 1893 Birthplace: Brooklyn, New York Coaxial cable?While at AT&T Bell Telephone Laboratories in? (Encyclopedia) radio, transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver.? (Encyclopedia) mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often abstract the features common to several models derived from the? The Inventors Hall of Fame, located in Akron, Ohio, was established in 1973 by the National Council of Patent Law Associations, now the National Council of Intellectual Property Law Associations,?