Early Television Stations
Stations RCZ (video) and VCSPS (audio) broadcast from Moscow from 1932 to 1937, and were probably the last mechanical station to leave the air. It broadcast a 30 line, 12,5 fps picture with a 4:3 aspect ratio. A 1937 booklet described building a scanning disk receiver for the station.
The following is from Volume 2 of the Television Society Journal 1935-1938, in article titled The Development of Television in the USSR by Dr Paul Shmakov:
Courtesy of George Lemaster
From the same publication, describing television transmission in 1932