Search results
Results From The WOW.Com Content Network
The tower appears to be in use for other purposes; the vertical antennas at the top and the round dark grey dish are not part of the original system. TD-2 was a microwave relay system developed by Bell Labs and used by AT&T to build a cross-country network of repeaters for telephone and television transmission.
Microwave relay stations were often located on tall buildings and mountaintops, with their antennas on towers to get maximum range. Beginning in the 1950s, networks of microwave relay links, such as the AT&T Long Lines system in the U.S., carried long-distance telephone calls and television programs between cities. [ 1 ]
English: A microwave relay tower on Granite Pass, Mojave National Preserve, California. This is part of the TD-2 AT&T Long Lines system, a microwave relay network created by AT&T in the 1950s to relay telephone calls and other data between cities in the USA. The four angular cone-shaped antennas are called horn-reflector antennas, invented by ...
The specific uses of the tower today are classified. [5] It was rumored to be a government intelligence numbers station, although others argue that the tower's communications equipment is now obsolete. [4] Several microwave antennas have been removed from the tower, including those pointed to Mount Weather Emergency Operations Center.
A typical larger microwave antenna designed for mid to long range A parabolic satellite antenna for Erdfunkstelle Raisting, based in Raisting, Bavaria, Germany. C band horn-reflector antennas on the roof of a telephone switching center in Seattle, Washington, part of the U.S. AT&T Long Lines microwave relay network.
A telecommunications tower with a variety of dish antennas for microwave relay links on Frazier Peak, Ventura County, California. The apertures of the dishes are covered by plastic sheets to keep out moisture. Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves but longer than infrared waves.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Trans Canada Microwave or Trans-Canada Skyway was a microwave relay system built in the 1950s to carry telephone and television signals from Canada's east coast to its west coast. Built across the nation, the towers ranged in height from nine metres high, to one in northern Ontario that was over 100 metres high. The system included 139 towers ...