61 stations for message transmission
The optical-mechanical communication line led from the Prussian capital - starting from station 1 at the old observatory - over a length of 587 km and 61 stations to the terminus at Koblenz Castle. In the chain of this line stood at Hahausen station 24, which is still remembered by the name »Auf dem Telegrafen« - that was the highest point on the Easter heads at 321.8 m above sea level. From Berlin to Hornburg (on the I-Berg) there were 21 stations on Prussian territory, then two stations in the Kingdom of Hanover (22: bookstore near Schladen and 23: Liebenburg) and five stations - 24 to 28 - on the territory that was friendly with Prussia of the Duchy of Braunschweig. Station 24 to the west was on the Easter heads near Hahausen, 25 near Naensen, 26 near Mainzholzen, 27 on the Holzberg near Stadtoldendorf and 28 on the Burgberg near Bevern.
4095 characters possible with six wings
Six wings - arranged in pairs on both sides of the mast boom of a tower - thus served as visual symbols. Each wing could be brought to the mast boom at angles of 0.45, 90 and 135 degrees. When all pairs of wings were used, this resulted in a total of 4095 characters, enough to encode words or recurring sentences. A message that consisted of about 30 characters ran through the route in about 60 minutes under favorable optical conditions.
Source: hahausen-harz.de/telegrafenline