Spurred on by Adlershof's post and another email I received I have re-worked the Soviet Camera section of the Museum site. see
http://www.tvcameramuseum.org/soviet/sovthumb.htm
Several new pictures and cameras have been added and at least one naming error corrected.
Little is known, by me at least, about soviet cameras so if you have any information or further corrections please help.
There is some doubt in my mind about the naming or sequence of manufacture of the KT-87 KT-116 cameras?, all seem to be the same basic camera.