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 Strange Coax

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Coincatcher
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Call Sign : 26-CT-3543
Posts : 10
Times Thanked : 0
Join date : 2020-05-14
QTH or Location : South Staffordshire
Equipment Used : Uniden 2830
Age : 56

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PostSubject: Strange Coax   Strange Coax Icon_minitimeWed May 20, 2020 7:30 pm

Ive just been up into the loft and found a large run of coax but I’m not sure if it suitable. I would post an image but I don’t think this board allows you to .

To describe it there are no markings the usual black outer casing but thicker, it has a thin plastic braid over the copper braid with a plastic core and central wire bordered by five holes in a circle.

Any ideas if I can use this please

73s
26-CT3543

Mark
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Alan - Mirror Man
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Alan - Mirror Man

Call Sign : 108CT233
Posts : 138
Times Thanked : 11
Join date : 2019-12-01
QTH or Location : Central Scotland
Equipment Used : CRT SS9900 Beofeng UV5R Yaesu FTDX1200 CRT Micron CRT FP00 Sattelite 2000 antenna ZS6BKW X30 co-linear

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeWed May 20, 2020 8:34 pm

That sounds very much like coax for a satellite dish or cable tv possibly which will be 75 Ohm and not the required 50 Ohm.
I have always been advised to get the best coax my budget will allow and if you look into line loss you will see why.
Here is a handy calculator: https://www.qsl.net/co8tw/Coax_Calculator.htm
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Coincatcher
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Call Sign : 26-CT-3543
Posts : 10
Times Thanked : 0
Join date : 2020-05-14
QTH or Location : South Staffordshire
Equipment Used : Uniden 2830
Age : 56

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeWed May 20, 2020 8:57 pm

Thank you
That is a big help but also a disappointment as I wont be able to use the cable and there is a lot of it. I guess its got to go in the bin, a shame

Regards 73s
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Alan - Mirror Man
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Alan - Mirror Man

Call Sign : 108CT233
Posts : 138
Times Thanked : 11
Join date : 2019-12-01
QTH or Location : Central Scotland
Equipment Used : CRT SS9900 Beofeng UV5R Yaesu FTDX1200 CRT Micron CRT FP00 Sattelite 2000 antenna ZS6BKW X30 co-linear

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeWed May 20, 2020 10:23 pm

You should keep it, it could be used on another project such as extending a router or television or satellite installation possibly, you never know when it may come in handy if you have room in the shed that is.
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Alan Pilot
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Call Sign : 163-CT-220...MW7TTA
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Join date : 2019-11-19
QTH or Location : Holyhead
Equipment Used : Yaesu FT-991A.

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeThu May 21, 2020 10:51 am

I have had satellite installed in several houses but never had coax in the loft.
You can host an image then show us what you have.
Load it onto imguru or a site like that then link it in a post on here.
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Coincatcher
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Call Sign : 26-CT-3543
Posts : 10
Times Thanked : 0
Join date : 2020-05-14
QTH or Location : South Staffordshire
Equipment Used : Uniden 2830
Age : 56

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeThu May 21, 2020 12:06 pm

Thank you all
I was ferreting up in the loft yesterday and came across this large run on coax .The radio is one in the garage and re set up with a painted green 1/2 wave pole and a pin inverted V wire antenna.

One question , can you make a 3 element beam wire antenna ?

Many thanks
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Alan - Mirror Man
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Alan - Mirror Man

Call Sign : 108CT233
Posts : 138
Times Thanked : 11
Join date : 2019-12-01
QTH or Location : Central Scotland
Equipment Used : CRT SS9900 Beofeng UV5R Yaesu FTDX1200 CRT Micron CRT FP00 Sattelite 2000 antenna ZS6BKW X30 co-linear

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PostSubject: Re: Strange Coax   Strange Coax Icon_minitimeThu May 21, 2020 3:16 pm

Yes, you need a rigid structure to support the wire with people using anything from bamboo cane to PVC or fibreglass tubes. I had a 4 element aluminium Yagi up and I had to reinforce all the elements with something I picked up in the local hardware store as the wind sent them all directions and that was from one of the so-called quality brands too I seem to remember.
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