The signal-bleed of electrical cross-coupling is why the DoD mandates minimum physical distancing between cable installs for Secret and Unclassified networks. Apparently there were sensitive memoranda—or portions of the same—escaping into the wild that way.
And then, someone figured out how to twist two wires together and send the signals differentially, but I'm getting ahead of the story.
The signal-bleed of electrical cross-coupling is why the DoD mandates minimum physical distancing between cable installs for Secret and Unclassified networks. Apparently there were sensitive memoranda—or portions of the same—escaping into the wild that way.
Fascinating post! I remember reading about the Telharmonium many years ago but never heard about Cahill’s business troubles.
Also, incredible photo of those 1890’s phone lines.
Appreciate your work.
Glad you appreciated it. There are any number of similar photos available online, like here: https://www.pinterest.com/pin/historical-times-in-2023--979040406472637717/ I had to go digging to find one that was clearly public domain in order to share it.
Sounds gay.