history

6,925 photos and 139 illustrations tagged history, from 50 members of Flickr Commons.

When were these photos & illustrations taken?

676
1840
2026

 

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16% of these photos & illustrations are geotagged.

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Photos & Illustrations

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A selection of photos & illustrations tagged history:

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The last upload was 11 September.

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26_0026434 Rohr Collection Image

from SDASM Archives

  • Chuck Walla said:
    "You can be sure if it's Westinghouse."

    Handset cords that retract into the console are part of what's called a panel phone. Single speaker with volume control was possibly for the original VHF conventional simulcast train channel on 160.410 MHz.

26_0026405 Rohr Collection Image

from SDASM Archives

  • Chuck Walla said:
    In any center with a similar function, the persons whose desks are closest to the screens are responsible for a subset of the system, (on the display in front of them). The person in the back (right of frame) is the shift supervisor.

    I am told the original 1970s BART communications backbone was a single-sideband, frequency-division multiplex analog coaxial cable system akin to Bell System L-Carrier. If true, the SCADA and block signals all ran over the coaxial cable.

    These images are sub-snapshot level quality.

Commemorative plates Sunderland Museum & Winter Gardens

from North East Museums

  • Flickr said:
    Congrats on Explore! ⭐ January 15, 2024
  • gato-gato-gato said:
    Wow, sehr cool.
  • Sigurd Krieger said:
    Congrats on Xplore!!
  • Ian Betley said:
    Congrats on Explore! ❤📷❤ splendid image! regards.