Telegraph lines - low voltage voice and data transmission. Now...

  1. dangar
    4,970 Posts.
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    01/06/23
    16:02
    Post #: 68082928
    Telegraph lines - low voltage voice and data transmission. Now obsolete, almost universally been replaced by optic fibre. Typical poles:

    https://hotcopper.com.au/data/attachments/5318/5318998-9aa10f91c43c09cb8b349b1549ac1c58.jpg

    Power lines - High voltage electrical energy transmission. Typical poles:

    https://hotcopper.com.au/data/attachments/5319/5319021-c88e9a23e1b6f4062482433b91fbf69f.jpghttps://hotcopper.com.au/data/attachments/5319/5319022-95dad7caad4068a64a4ec2805af5cd98.jpg

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