Key:communication:microwave

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Public-images-osm logo.svg communication:microwave
Rifu gittermast.png
Description
Microwave transmission antenna
Used on these elements
may be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
Useful combination
Wikidata
Wikidata-logo.svgQ747066
Status: In use

Wikipedia-16px.png Microwave transmission uses usually parabolic antennas which are located on masts/towers on both ends of radio link.
There are no individual masts/towers just for microwave transmission in Germany, they are always used together with mobile phone network antennas: communication:mobile_phone=yes.

Technical background and history

- The first microwave link between Doverem and Calais in 1931. Distance 40 km, parabolic antenna 3 m.
- The first multichannel link with 9 telephone channels in 1936 between Scotland and Northern Ireland.
- Building an international network for long distance connections after the World War II. The first transmission of TV broadcast in 1953.
- Until 1980-1990 there were devices for microwave links for up to 2.700 channels and frequencies between 1.9 GHz and 11 GHz. TV broadcast is transmitted almost exclusively via microwave links.
- Construction of large telecommunication towers for signal transmission or TV broadcast with large parabolic and horn-reflector antennas between 1950 and 1980. Long connections using several intermediate stations. Analogue directional antennas using vacuum tubes as transmitters needed a lot of maintenance. Large space consumption on the platforms of the towers.
- From the mid-1980s onwards is microwave transmission gradually replaced by optic cables.
- Digitization and shutting down of the analogue technology in microwave transmission, with the simultaneous conversion of networks, frequencies and antennas between 1985 and 1990.

How to map

Tags to use in combination

JOSM Preset

See Also