Tag:historic=optical_telegraph
 historic = optical_telegraph
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Semaphore system 
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| Group: historic |
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A semaphore telegraph is a system of conveying information by means of visual signals, using towers with pivoting shutters (a.k.a. blades or paddles).
For example, the Prussian semaphore system was a telegraphic communications system used between Berlin and the Rhine Province from 1832 to 1849. It could transmit administrative and military messages by optical signal over a distance of nearly 550 kilometres (340 mi). The telegraph line comprised 62 stations each furnished with a signal mast with six cable-operated arms.
According to wikipedia, among the countries that have this feature are France, Sweden, United Kingdom, Prussia, Portugal, Spain, Danemark, Russia, United States, Canada, Egypt, India
How to map
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Tags used in combination
- historic=optical_telegraph mandatory
- name=*
- optical_telegraph=Station_NN
- network=Preußischer_optischer_Telegraf
- image=*
- wikipedia=*
- description=*
For razed optical telegraph use instead:
Rendering
- Geschichtskarte
See also
- Telegraphenradweg Berlin – Koblenz
Telegraphenradweg Berlin – Koblenz - Semaphore telegraph on Wikipedia
- Prussian semaphore system on Wikipedia