Altai (mobile telephone system)
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The Altai mobile telephone system is the pre-cellular
emergency services, but has since spread into general use, and is still in use in some places, where its advantages outweigh those of conventional cellular networks. Work on the system of automatic duplex mobile communication started in 1958 in Voronezh
Research Institute of Communications (VNIIS, now concern Sozvezdie). It was established subscriber stations and base stations for communicating with them.
Technical information
From the technical standpoint "Altai" was fairly ordinary UHF/VHF
TV
transmitters, sometimes even sharing the HF circuitry. This allowed for good coverage, as there were generally only one base station per city.
See also
- Car phone
- Mobile radio telephone
- Improved Mobile Telephone Service, an American contemporary and counterpart of the "Altai" system
| 0G radio telephones (1946) | |||||||||
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| 1G (1979) |
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| 2G (1991) |
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| 2G transitional (2.5G, 2.75G, 2.9G) |
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| 3G (1998) IMT-2000 (2001) |
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| 3G transitional (3.5G, 3.75G, 3.9G) |
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| 4G (2009) IMT Advanced (2013) |
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| 5G (2018) IMT-2020 (2021) |
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