Leonid Ivanovich Kupriyanovich (Russian: Леони́д Ива́нович Куприяно́вич, 14 July 1929 – 1 January 1996) was a Soviet engineer from Moscow who is credited for early development of a mobile phone device.
In 1955 Leonid Kupriyanovich published the description of a simple walkie-talkie 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 mobile phone ("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). His device consisted of a base station and a portable handset. LK-1 was 3 kg in weight, 20–30 km operating distance, and 20–30 hours of battery life. Leonid Kupriyanovich patented this mobile phone in 1957 (author's certificate № 115494, 1.11.1957). The base station, in accordance with author's description, could serve several customers. In 1958, Kupriyanovich made the new experimental "pocket" model mobile phone. This phone 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 planned to be constructed in Mazilovo.
In the 1960s Leonid Kupriyanovich began to develop electronic sets for hypnopedia and researched methods of how to "write" information into the human memory. His electronic set "Rhytmoson" was manufactured in the USSR and purchased for medical purposes.
- Honan, Daniel (23 Aug 2011). "How the Cell Phone Became Smart". Big Think. Retrieved 8 Sep 2011.
- Измеров, Олег. Отечественные мобильники 50-х. Окно в прошлое. Сенсации, преданные забвению (in Russian). Retrieved 30 Jun 2009.
- Карманный радиотелефон. Наука и жизнь (in Russian). М.: Правда (10–1958): 66. ISSN 0028-1263.
- Куприянович, Леонид (1957). РАДИОТЕЛЕФОН. Наука и жизнь (in Russian). М.: Правда (8–1957): 49. ISSN 0028-1263.
- Рыбчинский, Юрий (1961). РАДИОФОН. Орловская Правда (in Russian) (12–1961). М.: Орловская Правда.
- Мартин Купер был не первым. Олег Измеров.
- Куприянович Л.И. Карманные радиостанции. - М.-Л: Госэнергоиздат, 1957. - 32 с.
- Борноволоков Э. П., Куприянович Л. И. Переносные УКВ радиостанции. — М.: Издательство ДОСААФ, 1958.
- Куприянович Л. И. Радиоэлектроника в быту. — М.-Л.: Госэнергоиздат, 1963. — 32 с.
- Куприянович Л. И. Карманные радиостанции, 1960.
- Куприянович Л. И. Биологические ритмы и сон. — М.: Наука, 1976. — 120 с.
- A history of mobile phones : a forgotten sensation (in Russian)
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