UK NATO Jackplug
Join Date: Feb 2008
Location: East Sussex UK
Age: 66
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Not certain for sure ... but I think it was a cotton/copper mix that was highly flexible but impossible to solder. I think you will find that terminations were "whipped" ... But a Squipper will best to help
Join Date: Nov 2006
Location: Somewhere in England
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The copper-cotton wire is called Tinsel and the way I was taught to solder it during Air Comms Trade Training years ago was to take some finer single-strand tinned copper wire and gently wind it around the exposed conductor-cotton in a whipping fashion. Apply a tinned soldering iron to the whipping, wait until the insulating laquer 'burnt off' and apply fresh solder containing flux, covering the whipping. Remove from heat and cool. Cut off any whipping loose ends et voilą!