All Telecommunications and Radio Engineers

Attached to the telescope was a radio receiver that could amplify faint cosmic signals by a factor of several million, making the waves strong enough to be recorded and charted.

Marrison, a telecommunications engineer at Bell Laboratories, was searching for more reliable frequency standards.

Alexander Stepanovich Popov (sometimes spelled Popoff; Russian: Александр Степанович Попов; 16 March [O.S. 4 March] 1859-13 January 1906 [O.S. 31 December 1905]) was a Russian physicist who was one of the first people to invent a radio receiving device.

He is credited with the invention of radar, although his apparatus, called the "Telemobiloscope," could not directly measure distance to a target.

Edwin Howard Armstrong (December 18, 1890, February 1, 1954) was an American radio-frequency engineer and inventor who developed FM (frequency modulation) radio and the superheterodyne receiver system.

In 1937 he created a portable radio signaling system for his employer CM&S, which he called a "packset", and was the first aircraft communications radio, but which later became known as the "Walkie-Talkie" for use on the ground.

Irving "Al" Gross (; February 22, 1918, December 21, 2000) was a pioneer in mobile wireless communication.

He is best known for his attempts in the 1880s to develop long-distance audio transmissions device that combined an improved megaphone device and a photophone (using light beams).

He was a pioneer in the investigation of radio microwave optics, made significant contributions to botany, and was a major force behind the expansion of experimental science on the Indian subcontinent.

This was the first practical telecommunications system of the industrial age, and was used until the 1850s when electric telegraph systems replaced it.

He invented the electric clock, the electric printing telegraph, and the first fax machine.

Ziv was a Senior Research Engineer in the Scientific Department, Israel Ministry of Defense, and was assigned to the research and development of communication systems.