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Coiling up Coaxial Cable #4452558
07/07/17 04:55 PM
07/07/17 04:55 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
I got an extra 6 feet of Comcast cable coming through the wall. How tight can I coil the cable up without damaging it? Right now it wants to be coiled up at a relaxed 16 inch diameter, but I'm wondering if I can coil it up tighter without breaking it. The cable is super stiff compared to Ethernet cable.

Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452560
07/07/17 05:01 PM
07/07/17 05:01 PM
Joined: Dec 2016
Posts: 7,143
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,143
Waco, TX
Try feeding back into the wall first.


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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452561
07/07/17 05:02 PM
07/07/17 05:02 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
I have several pieces around the house that are coiled to about 6 inches. The stuff is shielded and that bulks it up and makes it stiffer



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Re: Coiling up Coaxial Cable [Re: Linctex] #4452565
07/07/17 05:05 PM
07/07/17 05:05 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Linctex - that can't be done because the hole where the cable comes through the wall is filled in with silicone sealant.

Bioburner - 6 inches would be plenty tight enough. Even 10 inches would look better than it is now.


Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452573
07/07/17 05:09 PM
07/07/17 05:09 PM
Joined: Jun 2003
Posts: 33,561
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,561
ME
Don't coil it too much tighter than the 16 in dia. You can get screwy results by snapping that center conductor. EG kinda sorta still working intermittently.

The fix is to cut the wire off where you want it and splice a new F connector on. You might even be able to flirt with comcast into doing it for you.

Re: Coiling up Coaxial Cable [Re: eljefino] #4452580
07/07/17 05:16 PM
07/07/17 05:16 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Eljefino - that would probably be the best way if I could make up my mind where I want the modem to sit.

Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452584
07/07/17 05:29 PM
07/07/17 05:29 PM
Joined: Jun 2003
Posts: 33,561
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,561
ME
I put my modem in my basement and use Cat-5 to get it to my 2nd wifi hot spot as well as my blu-ray player so it doesn't overload the wifi. Clean. approved

Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452590
07/07/17 05:40 PM
07/07/17 05:40 PM
Joined: Jul 2009
Posts: 432
Seattle
Superflop Offline
Superflop  Offline
Joined: Jul 2009
Posts: 432
Seattle
Im going to guess it is rg6 coax which has a min bend radius somewhere around 10x the cable diameter.. or like 3 inches. If the jacket is wrinkling you are going to small

Last edited by Superflop; 07/07/17 05:40 PM.

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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4452652
07/07/17 06:23 PM
07/07/17 06:23 PM
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
When you coil Coax, you break the integrity of the shield if it's copper alone (no additional mylar shield) and knowing how the average Cable Co operates, they are almost certainly using the cheapest bulk cable they can find, which means probably copper braid only.

Most Coax cable, if you can find the spec, will have a minimum bend radius limitation. Again, the chances of you finding the spec for what your Cable Co uses is slim to none, but 6" is a pretty common number.

Also note that when you coil any cable you create an inductive element, and inductance can lead to instability in some cases. Coiling a power cable can trip breakers, for example, where if you instead lay the cable out in a straight line to take up the slack it may run your power tool all day.

In the end, it's best to cut it to the desired length and add a connector.

You don't have to do that yourself ... it's the installer's fault and it's the installer's problem to fix. Create a ticket. If they give you grief about the reason, hang up, and make something up and call again. The installer will fix it in five minutes when he gets to you.

On the other hand, maybe you do want to do it yourself ...


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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4453632
07/08/17 04:40 PM
07/08/17 04:40 PM
Joined: Feb 2010
Posts: 4,838
Central Texas
sleddriver Offline
sleddriver  Offline
Joined: Feb 2010
Posts: 4,838
Central Texas
I'm guessing what you have is RG-6 (maybe QS) with a solid center conductor. It is indeed much stiffer than Ethernet.

The more relaxed, the better. Coiling also induces inductance but with such a large dia., it won't matter much.


1998 Volvo V70 T5 228,880 mi. Original Owner.
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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4453824
07/08/17 08:34 PM
07/08/17 08:34 PM
Joined: Nov 2008
Posts: 9,288
Phoenix
dishdude Offline
dishdude  Offline
Joined: Nov 2008
Posts: 9,288
Phoenix
Drip loops are allowed to be 3" in diameter or larger, so it can be coiled pretty tight without damage.



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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4453907
07/08/17 10:16 PM
07/08/17 10:16 PM
Joined: Oct 2014
Posts: 4,040
Utah
CKN Offline
CKN  Offline
Joined: Oct 2014
Posts: 4,040
Utah
They do that so if you re-arrange the room you have plenty of cord to do so. It's standard operating procedure.

Re: Coiling up Coaxial Cable [Re: CKN] #4453943
07/08/17 11:56 PM
07/08/17 11:56 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
I got it coiled up in an 8-inch loop now. I'm not going any smaller than that.

I also noticed they used 16 gage coaxial instead of the 18 gage homeowner grade.

Re: Coiling up Coaxial Cable [Re: Merkava_4] #4454009
07/09/17 04:43 AM
07/09/17 04:43 AM
Joined: Jan 2011
Posts: 2,830
N.Ohio
Lubener Offline
Lubener  Offline
Joined: Jan 2011
Posts: 2,830
N.Ohio
Your fine. Coaxial cable is more rugged than you think.

Last edited by Lubener; 07/09/17 04:44 AM.

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Re: Coiling up Coaxial Cable [Re: Merkava_4] #4454208
07/09/17 10:19 AM
07/09/17 10:19 AM
Joined: Jun 2003
Posts: 5,951
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,951
Illinois
Cut it to fit and add a new plug end.


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