Leonid Ivanovich Kupriyanovich (, 14 July 1929 – 1 January 1996) was a

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

engineer from

Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...

who is credited for early development of a

mobile phone A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link whil ...

device.

Career

In 1953 Kupriyanovich graduated MSTU named after N. Bauman. In 1955 Leonid Kupriyanovich published the description of a simple

walkie-talkie A walkie-talkie, more formally known as a handheld transceiver (HT), is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings, radio engineer Alfred J. Gross, ...

amateur radio station for personal use in the Soviet amateur radio magazine "Radio," 1955, N2. It operated on two vacuum tubes. The walkie-talkie weighed about 1.2 kg and had 1.5 km operating distance. In 1957 Leonid Kupriyanovich presented a micro walkie-talkie radio version the size of a matchbox, 50g in weight and had 2 km operating distance. Also in 1957 he made an experimental model of a wearable automatic radio landline extender ("radiophone"), called LK-1 (not to be confused with the cancelled Soviet spacecraft of the same name or LK-1 ( ЛК-1) the first Soviet

trolleybus A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tramin the 1910s and 1920sJoyce, J.; King, J. S.; and Newman, A. G. (1986). ''British Trolleybus Systems'', pp. 9, 12. London: Ian Allan Publishing. .or troll ...

). His device consisted of a stationary module and a portable handset. LK-1 was reportedly 3 kg in weight, 20–30 km operating distance, and 20–30 hours of battery life. Leonid Kupriyanovich patented this landline extender in 1957 (author's certificate № 115494, 1.11.1957). The stationary module, in accordance with author's description, could serve several customers. In 1958, Kupriyanovich purportedly made the new experimental "pocket" model radio phone. This phone supposedly had 0.5 kg weight. To serve more customers, Kupriyanovich proposed the device, named it as a correllator. In 1961 Leonid Kupriyanovich presented a pocket automatic radio phone which could fit in the palm of a hand. This pocket mobile phone weighed only 70 g and had 80 km operating distance. Kupriyanovich told correspondents of the АПН news agency that in the USSR the production of this device was planned. He also reported the plans for the construction in Moscow of ten base stations for creation of a mobile communication network. The first station in Moscow was supposedly planned to be constructed in Mazilovo.Мартин Купер был не первым.
Олег Измеров. In the 1960s Leonid Kupriyanovich's electronic set "Rhytmoson" was manufactured in the USSR and purchased for medical purposes.

References

External links

A history of mobile phones : a forgotten sensation
1929 births Soviet engineers 1996 deaths Soviet inventors {{Russia-engineer-stub

Career

See also

References

Further reading

External links