gdc Posted 22 August , 2019 Share Posted 22 August , 2019 I have been trying to establish what an "Air Line" is I am sure I'm over thinking this. But have no idear what it is ......Can someone out there please enlighten me to as what this symbol means -- A red line with red dots spaced along it --What it was for or did. Thanks ...............Graham Link to comment Share on other sites More sharing options...
Howard Posted 22 August , 2019 Share Posted 22 August , 2019 An Air-line is a phone line strung along telegraph poles. Mnay were buried to protect them but that was not always possible. Howard Link to comment Share on other sites More sharing options...
WhiteStarLine Posted 22 August , 2019 Share Posted 22 August , 2019 Like Howard says! This is from "The Signal Service in WW1": From the beginning of the war the vulnerability of airline and field cable to intensive shell fire was forced upon the attention of everyone concerned. Various methods were tried to overcome this very serious difficulty in the way of maintaining line communication, but for some time with little success. The first step following the exposure of the relative vulnerability of open wire routes was a considerable extension of the use of cable in the forward areas. It was then discovered that cable slung lightly on poles was much less vulnerable than ground cable to high explosive shells bursting on impact. Link to comment Share on other sites More sharing options...
gdc Posted 30 August , 2019 Author Share Posted 30 August , 2019 Thank you All very much, I thought that it might be the case.You guys certainly know where to find the answers, and have access knowledge and material to which I had no idea was still available or even where to look.. Google is fine,but does not know everything!!! Thanking you all once again G D C Link to comment Share on other sites More sharing options...
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