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Another Coax/Cable question
Posted by: chopper
Date: October 10, 2018 04:51PM
I have existing cable TV coming into my house.

I also have a new antenna on my house.

Can I simply run the Coax from the antenna, patch it into the existing cable coax before the junction box and have the two signals running on the same coax, inside the house?
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Re: Another Coax/Cable question
Posted by: billb
Date: October 10, 2018 04:52PM
no

edit: you need a switch - there may be one built into the TV to switch between inputs.



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Edited 1 time(s). Last edit at 10/10/2018 04:53PM by billb.
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Re: Another Coax/Cable question
Posted by: modelamac
Date: October 10, 2018 06:03PM
If the coax for cable TV goes into a box, there should be a variety of outputs from that box that can connect the box to the TV, such as HDMI. If you connect your OTA coax to the TV and an HDMI or Composite cable to the TV from the cable box, you can use the Input or Source button on your TV remote to choose which will provide the signal you watch.

Otherwise, as above, you need a switch.



Mr. Curmudgeon, on several OSes and an ego trip.
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Re: Another Coax/Cable question
Posted by: timg
Date: October 10, 2018 06:27PM
OK, well, I read your post completely differently than the other posters in this thread.

To me, you want to use the existing coax cable to run both the cable company's signal and your antenna signal into your house.

I think this link is what you are talking about, with the possible exception that the link describes sharing the cable only for internet and antenna. I'm not sure if you also want cable TV signals ...

antenna and cable on same coax



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Re: Another Coax/Cable question
Posted by: Fritz
Date: October 10, 2018 06:42PM
one itty bitty thing. Lightning.

If you have an arrestor on your OTA it may not save your router.
But TV and cable signals are at different freqs, so yes. I did it briefly before I had time to run separate coax. (as timg points to)
Otherwise as above, different outputs for different purposes and different inputs on the TV.



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Re: Another Coax/Cable question
Posted by: Cary
Date: October 10, 2018 07:46PM
The problem is that the 2 signals will interfere with one another. There is equipment that allows you to do what you want - companies like Channelvision make them. You would use splitters/combiners, IIRC.

That's about the extent of my knowledge in this area...
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Re: Another Coax/Cable question
Posted by: Bernie
Date: October 10, 2018 08:56PM

$6.89 @Amazon
Kinda explains itself.




Staunton, Virginia
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Re: Another Coax/Cable question
Posted by: Bill in NC
Date: October 11, 2018 06:21AM
Won't work...cable signal is much stronger than antenna, so any antenna signal will be overpowered.
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