Originally posted by peterhr
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The outer plastic cover and the shield (aluminum foil+braid) of the coaxial were removed to get central conductor with it's insulation.
The inner copper conductor of coaxial is not thick enough to maintain it's shape.The white insulation adds to the strength of the copper wire to keep it in shape.
The central conductor's white insulation gives an impression that the antenna is made of white plastic rod :-)
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