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Encyclopedia > Telegraph pole

A telegraph post, telegraph pole or telephone pole is a post or pole upon which telephone network equipment is situated. Similar poles are often used for electricity cables (with pylons being used for only the higher voltage applications).


Telegraph posts are usually wooden, but vary greatly from nation to nation. In some countries, for example the UK, posts have sets of brackets arranged in a standard pattern up the post to act as foot holds for those working on the equipment or connections atop the pole.


The appearance of posts has changed with technology through the 20th Century, with for example the loss of the stereotypical but now redundant crossbeam used to mount rows of insulators. These more traditional poles can sometimes be seen unaltered beside railways, or where no effort has been made to purposely remove crossbeams not in use.


Today telegraph poles may hold much more than the uninsulated thin copper wire that they originally supported. Thicker cables holding many twisted pair lines, or even fibre-optic cable may run between poles. While simple analogue repeaters or other equipment has long been mounted against poles, often new digital equipment for multiplexing/demultiplexing or digital repeaters may now be seen.


External links

  • Lots of photographs (http://www.photovault.com/Link/Industry/Construction/ElectricTelephone/ICEVolume01.html)
  • Hungarian Telephone Poles (http://myinsulators.com/hungary/pole-m.html)

  Results from FactBites:
 
Telegraph - definition of Telegraph in Encyclopedia (2124 words)
The first telegraphs were optical telegraphs, including the use of smoke signals and beacons.
Electric telegraphs were to reduce the cost of sending a message thirty-fold compared to semaphore.
An electrical telegraph was US-patented in 1837 by Samuel Morse.
Telegraph poles - the art of landscaping !! (752 words)
Then she spitted the charred and crusty tuber on a pointed stick and held it close to her mouth; she had stopped whistling and instead pursed her cracked, wind-parched lips to blow the earth and ashes off the potato skin.
But he was still in a hurry; trying to go faster than the telegraph poles, he took long slow leaps across the field; the mud flew from his boots as he leapt over the soggy ground, but leap as he might, he seemed to be crawling.
During the US Civil War the telegraph was used extensively, but the messages were sometime unreliable, hence the association of rumour on the grapevine.
  More results at FactBites »


 

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