A Fernseh television projector on display at the Berlin Radio Show
Fernseh television projectors were used to screen the daily transmissions. By 1936, the latest projectors received and displayed images in a 375 line interlaced format, producing a picture of approximately 48" x 42". This projector (above) was demonstrated at the Berlin Radio Show (Funkausstellung) in August 1936.
In Germany as in other countries, the year 1937 witnessed television development moving almost completely toward all-electronic systems. At the receiving end, particularly, this change was almost universal. The standard used was increased to 441 lines.
During the war, Fernseh demonstrated a 1,029 line system to be used as a system for transmitting maps for military purposes. This system had the disadvantage of requiring 15 MHz of bandwidth.