Old 4 core SWR cable
 

Just curious- I dug up and I am re-using some old 4 core steel wire reinforced cable. The core colours are red, black, blue and yellow, IIRC. What I'm puzzled by is a small diameter white tube that runs within the SWR, which appears to contain a fibrous, non metallic material.

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.

Cheers.

Terry.

Old 4 core SWR cable
 

Old 4 core SWR cable
 

On 26/04/2017 16:41, wrote:
Just curious- I dug up and I am re-using some old 4 core steel wire reinforced cable. The core colours are red, black, blue and yellow, IIRC. What I'm puzzled by is a small diameter white tube that runs within the SWR, which appears to contain a fibrous, non metallic material.

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.

Cheers.

Terry.

Is it running down the centre? If so, it's probably just packing,
filling space.

Cheers
--
Clive

Old 4 core SWR cable
 

On 26/04/2017 16:51, Bob Minchin wrote:
wrote:
Just curious- I dug up and I am re-using some old 4 core steel wire
reinforced cable. The core colours are red, black, blue and yellow,
IIRC. What I'm puzzled by is a small diameter white tube that runs
within the SWR, which appears to contain a fibrous, non metallic
material.

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.

Cheers.

Terry.

It is used during manufacture and has no function in the finished product.


+1



--
Adam

Old 4 core SWR cable
 

Old 4 core SWR cable
 

Originally they are a kind of strengthening from thestuff being bent too
much is what I was told. One used to find it also in some long audio cables.
It was often spiralled around or ran straight through the middle as I
recall.

Brian

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Blind user, so no pictures please!
wrote in message
...
Just curious- I dug up and I am re-using some old 4 core steel wire
reinforced cable. The core colours are red, black, blue and yellow, IIRC.
What I'm puzzled by is a small diameter white tube that runs within the SWR,
which appears to contain a fibrous, non metallic material.

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.

Cheers.

Terry.

Old 4 core SWR cable
 

On 26/04/2017 18:23, ARW wrote:
On 26/04/2017 16:51, Bob Minchin wrote:
wrote:
Just curious- I dug up and I am re-using some old 4 core steel wire
reinforced cable. The core colours are red, black, blue and yellow,
IIRC. What I'm puzzled by is a small diameter white tube that runs
within the SWR, which appears to contain a fibrous, non metallic
material.

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.

Cheers.

Terry.

It is used during manufacture and has no function in the finished
product.


+1



If it is XLP, don't attempt to bend the cores when the temp is below 5
centigrade, which it seems to be in Scotland at the moment.