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OK, DirecTv coax cableing question?

D.J.

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Sep 16, 2009
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1,116
Location
New Haven IL
Ok here is the question I have. DirecTv was installed about 5 months ago. I have HDMI cable from DTV box to TV in living room. I have RG8 coax ran existing behind the drywall in the home to the other tv locations. Was wandering if I can come out of the upper rear of the DTV box with the RG8coax and run into the other bedroom tv and watch the same programing on the bedroom tv as I'm watching on the living room TV. Thanks in advance for your comments.
 
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ishiboo

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Oct 27, 2010
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RG6 :)

Some receivers support a RF output... My moms Dish service has this for her guest bedroom - RF output and RF remote. Most do not however. Check to see f yours does, if not you will need to go with an additional box and the monthly fee, or run new cable - HDMI if the distance permits, or two Cat6 with HDMI mux/demux boxes.
 

theoldwizard1

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Feb 22, 2011
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SE MI
Are you sure about the RG8 ? It typically uses BNC connectors (1/4 turn) and is not commonly used for television.

RG6 or RG59 are more common and both typically use F connectors, which is fully threaded.
 

GShelton

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Aug 14, 2006
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N. Central Florida
If I understand what you are asking, you just want to hook a second TV to the same box. You are not trying to get two separate channels and you are not worried about the remote reaching the DTV box.

If this is the case, then the answer is kind of. Only standard def channels will work on the coax connection. The boxes generally will not put out the HD channels to non-hd hookups.
 

puttsy

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Nov 22, 2011
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Iowa, USA
@GShelton has it right.

I think first you've got some terminology (wording) issues so I will reply with my assumptions of the correct wording.

First, you have RG6 run through your walls. That *should* be okay.

I've got D* and have it run to 3 different rooms from 1 receiver. (1 composite, 1 component, 2 HDMI) ALL rooms are 'watching' the same channel because primarily it is a 1 person home 8 months of the year.

SOO,

Newer receivers only have HDMI, Component, S-video, and RCA/composite outputs. (Some don't even have all those!) That means running over RG6 is difficult but not imposible. One of my setups runs to an RF Modulator via composite/RCA and then gets converted to RG6 and finishes the run.

I'm actually in the process of running RG6 to all bedrooms in the home and getting structured media panel with an RF modulator to run out to the rooms via RG6.

That means you may need to stick an RF modulator behind your D* receiver if it doesn't have coax (RG6) out but, that shouldn't be much of an issue, just a minor annoyance.

Also note, if you have HD service, you won't get HD out to that TV and, likely your primary TV will lose its' HD quality because of the conflicting outputs.

I have 26" Full HD monitor that I run to via HDMI and can get D* HD on that if no other TV's are in use but, if the old 26" CRT TV in bedroom 2 is being used (MR. RF Modulator), the receiver yells that it's not an HD connection.

Note on HD:
RG6 can carry 720P HD and up to 1080i (kind-of)
Component can carry 720P and 1080i
HDMI does up to full 1080P
 

ishiboo

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That RF modulator is a NTSC modulator, ATSC availability is slim which is why I didn't recommend that. Will modern TVs with ATSC tuners also tune NTSC channels still?

The picture *****. I would keep HD if at all possible, I have a hard time watching SD programming!
 

Turpin

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Dec 28, 2012
Messages
3
Just FYI, I don't know the age of those extra TV's your planning to run RG6. On the older TV's, the coaxial input was for a 300 ohm coaxial (not sure of the RG#) the later version TV's had 75ohm Coaxial(RG6) input which was for digital signal so as to not need a cable box. My point being, check the coaxial input (it should be marked which ohm). If you use a 75ohm (RG6) cable on a 300 ohm input, you'll probably get a low pitch hum that will slowly drive insane.
 

Motofixxer

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Oct 10, 2009
Messages
681
Just an FYI, Cat5e or Cat6 can be used to carry almost any signal with simple cheap baluns/adaptors. So 2 cat6(recommended) can run an hdmi signal a couple hundred feet with no degradation issues, as reported.

So in this case for example an hdmi splitter can be used along with hdmi to cat6 adaptors then 2 runs of cat6 and your in business.
 
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zuk123

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Mar 25, 2012
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Houston TX via Chicago, Phoenix, LA, and San Diego
Cat 6 (or cat5e) is generally considered the 'future proofing' cable to run, and as long as you are running 1, might as well run 2. There are converters and extenders for every type of signal that work with the Cat cable.

I installed pro video systems for a living, and we run everything on cat cable. Audio, video, network, serial, you name it, it will run on cat with the right adapter.

If you run RG6, you should watch some of the DirectTV cabling videos online. Every termination needs to be correct (you need the right ends) to preserve the ability to use them for digital distribution. Any splitters or amps need to be the right bandwidth rating too. I have boxes of older cabling stuff that is all obsolete now, except for analog video. Use the modern, correct stuff, even if you are just running analog now, you'll be glad you did later.

Good luck,

zuk
 

mopho

Member
Joined
Jan 3, 2013
Messages
15
First rg8 is a 50ohm cable normally used for RF transmission. 2nd yes, you can do this and it is common to do such a thing if you need to add a 2way splitter to feed your new cable run and your current TV. Most of the newer directv boxes no longer support a coaxial output in that case you need a RCA-coaxial converter.
 
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