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Posted By: Ray Wemple on: 06/23/2009 11:02:13 EDT
Subject: RE: Telegraph insecurity during CW

Message Detail:
Tom,
I can't recall if it was in "Lincoln in the Telegraph Room" or Plums "The United States Military Telegraph in the Civil War", but unless detected while cutting into the line itself, I don't think they new someone was on the circuit listening. As I said before, if someone tapping the line also responded to the sender of a message, and the sender was used to working that station regularly, after awhile, you get to know the other guys "Fist"(his rythm of sending and style), so as Plum said, it was sometimes easy to detect an imposter on the other end. If they thought there was someone on line listening, a Cavalry patrol was sent to check the line if available on some occasions.I don't think the technology to measure the distance of an"Open" or "Short" existed at the time to estimate the distance of the tap, but I could be wrong. That is something that can be done today from a test board in the central office of the phone company with telephone lines. Hope this is helpful.
73 de Ray


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