http://milparade.udm.ru/27/060.htm
http://talks.guns.ru/forum_light_message/42/135080.html
http://www.vif2ne.ru/nvk/forum/arhprint/61099
Photo and the small information
The first portable updatings have appeared in 1966 (PSNR-1). For an example American PPS-5 - 46 kg (1967) for service weigh 3 persons are required, PPS-15 weighs only 8 kg (1973). Unfortunately I have not found exact weight PSNR-5 etc. In everyone scout company is at least 1 PSNR-5 or its analogues and a minimum 3 SBR-3 "FARA" or its analogues. GSR SBR-3 "FARA" - weighs about 16 kg - for service 1 person is necessary.
PSNR - Perenosnaya Stantsiya Nazemnoy Razvedki - in English - Portable Station Ground Investigation or portable ground surveillance radar.
SBR - Stantsiya Blizhney Razvedki - in English - Station Near Investigation or short-range surveillance radar
SBR-1 FARA - can couple with weapons (for example 12.7mm NSV or AGS-17)
Sorry for my bad English.