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How test the end of a coax cable run to see if signal being transmitted?

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Frequent Visitor

How test the end of a coax cable run to see if signal being transmitted?

Hi,

 

We have installed where coax cable was run to every room. Nice, but over the years either I or Comcast installers have moved or removed cables from the main feed's spliter. Many cables lost their original labels.

 

Help:  I need to test some of the installed coax wall outlets to find if there is an actual signal being received at these remote outlets only since I do not have access or know which cable at the starting point is a match for a 'live' line at this time.

Ideas? Suggestions? on how to test at these  end point coax wall outlets only to find if a signal is still being transmitted to them? (I really do not want to drap a TV around).

 

Let me know.

 

Thank you very much ofr your help.

 

John

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Diamond Problem Solver

Re: How test the end of a coax cable run to see if signal being transmitted?

You could get an idea if you have access to a cable toner. Or You could use your modem, and take it from cable outlet to cable outlet, if it locks on like it normally does, it’s live. If it doesn’t lock on, it’s not live.

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JHH re: How test the end of a coax cable run to see if signal being transmitted?

 

Andrew,

 

Thank you for the quick reply and ideas. Two items:

 

1) Can I use the 'cable toner' alone, at the cable endpoint, at the wall outlet?

Yes, I had run across the 'cable toner' ideas (see, https://www.amazon.com/Stanz-Pocket-coaxial-tracker-finder/dp/B01KZ0PL44/ref=sr_1_6 keywords=cable+toner&qid=1548095193&sr=8-6),

but the YouTube, etc. instruction videos on how to use it, if I got it right, require that you disconnect the cable at the start point and add the 'toner'. Since these RG6 cables have been messed around with over time and new ceilings, etc. I am pretty confident that there are spittters out of sight, hence, my concern to just deal with the cable endpoint location. 

 

Your knowledg on this 'cable toner' is much appreciated.

 

Thanks.  John

 

P.S.:  2) disconnecting the modem (messy), moving it around, hmmm, seems doable, but less preferred if a 'cable toner' will do the job.

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Diamond Problem Solver

Re: JHH re: How test the end of a coax cable run to see if signal being transmitted?

Yeah a cable toner won’t pass through a splitter( toner won’t make a noise). Other than lugging a cable box/tv around, the modem is best. Label the lines so you only have to do this once

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JHH re[2]: How test the end of a coax cable run to see if signal being transmitted?

 

Andrew,

 

IF there was not a splitter involved (and some/most of the runs should not have a splitter involved),

would the cable toner still work if only used at the endpoint wall outlet to identify a cable that has a signal OR any other low investment equipment comes to mind that also does this?

 

Thank you.

 

John

 

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Diamond Problem Solver

Re: JHH re[2]: How test the end of a coax cable run to see if signal being transmitted?

The toner will work. It’s actually 2 pieces. One piece to the wall outlet (pipe), the smaller piece (speaker) back to where your cables meet. Put the speaker to ends of cable and when it makes a squeak ( you can’t miss it) that’s your cable. Check your local pawn shop, you might be able to find one.

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Re: JHH re: How test the end of a coax cable run to see if signal being transmitted?

Hi,  Comcast was just here and told me I need an electrician to test the cable running for the splitter (outside) to cable outlet in the house.  Can any electrician test the cable or is there a specific type?

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Diamond Problem Solver

Re: JHH re: How test the end of a coax cable run to see if signal being transmitted?

What was the technician there for? Any technician can test it but if it needs replaced it may need an electrician depending on location

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