AVS › AVS Forum › HDTV › HDTV Technical › Coax HD Signal Question
New Posts  All Forums:Forum Nav:

Coax HD Signal Question

post #1 of 8
1/25/12 at 4:41pm
Thread Starter 
Hello, here is my situation:
I currently have a Dish Network HD satellite feeding my Dish Network HD receiver in my family room that controls 2 television areas of the house. "TV 1" is set up where the satellite receiver resides. I am looking to purchase another HDTV and put it where the "TV 2" location is in my house which is in the basement nowhere near the physical Dish satellite Receiver. My questions are:
1) what will my picture quality be like with just having the coax cable off the wall as the only cable accessible at this point?
2) If the answers to the first question are not good, then do I have any other options to enhance the picture quality?
3) Do they sell A/V receivers in which you can go coax into the A/V receiver and then go HDMI out to the TV? Is this even possible?

Thanks in advance!
Reply
Reply

AVS Top Picks

post #2 of 8
1/25/12 at 4:54pm
It would be helpful if you told use the model of your reciever. As far as recievers with HDMI out you should be using one right now. Also I'm not sure I'm getting how your set-up is. You'll need a reciver for each TV.
Reply
Reply
post #3 of 8
1/26/12 at 5:18am
Thread Starter 
BC,

I just edited a little more of my initial post to hopefully make things clearer.
My current setup in terms of cabling and receivers is as such:
1) I have a Dish network HD satellite for my TV programming with coax run from the dish to 4 different areas of my house.
2) The way Dish Network HD receivers work is that 1 receiver controls 2 different areas of the house - 1 area where the dish receiver will reside and one where the receiver will not reside.

This is where my question about picture quality comes into play. I'm looking to buy an HDTV for "area 2" where the dish receiver will not be physically located. All that is there is the coax coming out of the wall. How good/bad will the picture quality be by just plugging the coax directly into the HDTV without any HDMI cabling? Also, I would like to put surround sound in that room with a good A/V receiver. Is it possible for the coax to go into the A/V receiver and then run HDMI out to the TV?

I hope I've provided enough info. If not, please let me know what I'm leaving out.

Thanks.
Reply
Reply
post #4 of 8
1/26/12 at 6:26am
So is the coax you want to hook to the 2nd HDTV connected to the HD reciever or to the satellite? If it's to the reciever it will probably be SD signal. If it's to the satellite you won't get any picture in.
Reply
Reply
post #5 of 8
1/26/12 at 8:23am
Quote:


All that is there is the coax coming out of the wall. How good/bad will the picture quality be by just plugging the coax directly into the HDTV without any HDMI cabling?

Coax directly from the dish to the tv will give you nothing, as there is no receiver to decode the signals. If the coax is the only cable run there, you could output the coax from the receiver box to the second tv, but you will be limited to an SD signal.

Quote:


Also, I would like to put surround sound in that room with a good A/V receiver. Is it possible for the coax to go into the A/V receiver and then run HDMI out to the TV?

No, coax cannot go directly into a receiver. To get surround sound, you need to either run an hdmi from the satellite box to the receiver (then another hdmi from the receiver to the tv), or run an optical cable from the satellite box to the receiver.
Reply
Reply
post #6 of 8
1/26/12 at 8:41am
Quote:
Originally Posted by BCF68 View Post

So is the coax you want to hook to the 2nd HDTV connected to the HD reciever or to the satellite? If it's to the reciever it will probably be SD signal. If it's to the satellite you won't get any picture in.

Assuming the op is connecting the other 4 outlets to the TV2 outlet on the sat receiver, that is exactly right - SD only.

To get HD to your second tv, you are going to need a second sat receiver which means pulling a pair of coaxs from your switch to the location of the second receiver. If there is no switch, it will have to be added as well.
Reply
Reply
post #7 of 8
1/26/12 at 10:03am
To see approximately how bad the picture will be:
Connect your existing HDTV's coax ANT-IN port to the coax coming out of the dish box that feeds the distant TV. Tune the HDTV to the appropriate analog channel the dish box is transmitting to the distant room on.
Reply
Reply
post #8 of 8
1/28/12 at 12:51am
Dishnet's "TV2" coax output is a low-rez, analog UHF TV signal that can be routed via existing, shared
house coax wiring along with either OTA TV or CATV. Hence sound is also low-rez STEREO....not Surround.

If you want HD and Surround Sound in the second location, you'll need a second Dishnet HD Receiver.
It MAY be possible to use your existing house coax wiring, using either a second (or third) output from the
LNB's (Multi-Switch is internal in Pro Plus models) or from a separate Multi-Switch.

Take a look at some of the alternative installation diagrams. A SINGLE Coax is run to each room from either
the Pro Plus Dish (two or three outputs, one to each room) or from a separate Multi-Switch. At the back
of each Dishnet Receiver, there is a "DP Plus Separator" that feeds the two SAT inputs:
https://rweb.dishnetwork.com/departm...nexample10.pdf
Some of the "Backfeed" configurations for rerouting the TV2 UHF signals can be somewhat complex:
https://rweb.dishnetwork.com/departm...nexample11.pdf
Dishnet's Super Home Node is typically an Eagle Aspen SHN-42:
http://www.eagleaspen.com/admin/prod...n/file_227.pdf

Since Dishnet "hides" these diagrams, you'll have to cycle through all of the numbers to see all of the diagrams....
Looks like they only have one configuration readily available on their website (old Dish with external Multi-Switch):
http://www.dishnetwork.com/SupportSe...ech-signalflow
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: HDTV Technical

AVS Top Picks

AVS › AVS Forum › HDTV › HDTV Technical › Coax HD Signal Question