The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph corresponds to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules.
A 1 Gbit/s point-to-point millimeter-wave link installed in the UAE
Earth station at the satellite communication facility in Raisting, Bavaria, Germany
A parabolic satellite antenna for Erdfunkstelle Raisting, based in Raisting, Bavaria, Germany
A point-to-point wireless unit with a built-in antenna at Huntington Beach, California
Visualization from the Opte Project of the various routes through a portion of the Internet
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 replica of one of Chappe's semaphore towers
Dozens of microwave dishes on the Heinrich-Hertz-Turm in Hamburg, Germany
Optical fiber provides cheaper bandwidth for long-distance communication.
Communications tower on Frazier Mountain, Southern California with microwave relay dishes
Digital television standards and their adoption worldwide
Danish military radio relay node
here
Production truck used for remote broadcasts by television news has a microwave dish on a retractible telescoping mast to transmit live video back to the studio.
The OSI reference model
Antennas of 1931 experimental 1.7 GHz microwave relay link across the English Channel. The receiving antenna (background, right) was located behind the transmitting antenna to avoid interference.
US Army Signal Corps portable microwave relay station, 1945. Microwave relay systems were first developed in World War II for secure military communication.
Richtfunkstelle Berlin-Frohnau
Microwave spying

In telecommunications, a point-to-point connection refers to a communications connection between two communication endpoints or nodes.

- Point-to-point (telecommunications)

Although an experimental 40 mi microwave telecommunication link across the English Channel was demonstrated in 1931, the development of radar in World War II provided the technology for practical exploitation of microwave communication.

- Microwave transmission

Other examples of point-to-point communications links are leased lines and microwave radio relay.

- Point-to-point (telecommunications)

20th- and 21st-century technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, television and teleprinter, networks, radio, microwave transmission, optical fiber, and communications satellites.

- Telecommunications

Microwaves are widely used for point-to-point communications because their small wavelength allows conveniently-sized antennas to direct them in narrow beams, which can be pointed directly at the receiving antenna.

- Microwave transmission

Telecommunication over fixed lines is called point-to-point communication because it is between one transmitter and one receiver.

- Telecommunications
The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph corresponds to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules.

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