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Harry Bloomfield[_3_] Harry Bloomfield[_3_] is offline
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Default Old 4 core SWR cable

expressed precisely :
What might the fibres in the white tube be and for what purpose? They don't
quite look like fibre optic material, but that's all I can think of.


It is just packing to fill what would be a void in the finished shape.
Just cut it off when making the ends up.