High Def Forum - Your High Definition Community & High Definition Resource

Go Back   High Def Forum - Your High Definition Community & High Definition Resource > General Chit Chat > Cables & Connections
Rules HDTV Forum Gallery LINK TO US! RSS - High Def Forum AddThis Feed Button AddThis Social Bookmark Button Groups

Cables & Connections Discuss and learn about HDMI Cables, DVI Cables, HDTV Cable Connections and more! RSS - Cables & Connections

How do I get HDTV over coax (RG6)?

Reply
AddThis Social Bookmark Button
 
Thread Tools
Old 05-28-2005, 07:50 PM   #1
What is HD?
 

Join Date: May 2005
Posts: 2
Default How do I get HDTV over coax (RG6)?

Hello to everyone--I'm new and lost, after two hours of discussions with various vendors. I have a new home, with several areas that will have plasmas in them. They are connected to a central equipment room with coax. Then the room is home runned to the cable provider. It was suggested that I look for plasmas that have a built-in HD tuner, which the Panasonic TH-42PX50U has. Questions are:

1. If I use an HD cable box in the rack with coax into it, then coax out to the Panasonic, will the built-in tuner give me an HD signal?

2. Alternatively, the Panasonic can take a cable card (which they say is needed to "get the most of the built-in tuner")--doesn't that mean the same thing as sending a coax cable from an HD box to the set, or do I need to connect the Panasonic to the home run via coax and then use the cable card get HD?

The cable card would lose the ability to give me DVR (which I can get through the HD cable box) as well as the on-screen menu, I believe.

Help.
D123 is offline   Reply With Quote
Old 05-28-2005, 11:54 PM   #2
High Definition is the definition of life.
 

Join Date: May 2005
Posts: 115
Default

most HD boxes don't have coax output, so that really isn't an option. What you would need to do is have your cable running directly from the junction closet to the HD tv, and then the built in tuner of the TV will take over. The reason for the cable card is so that you can get all of your digital package channels, on the TV.

edit: another option you could try is using BNC style coax cables with component video converter tips (basically you run the coax cable to all of the rooms off of the one box, and then use a BNC to RCA converter and plug them into the component video slots on the TV's). The only downfall of that is you would only be able to watch 1 channel at a time. So your best bet really is to go with a standard amplified splitter, and have RG6 going to each of the rooms.

If the cable company doesn't offer the cable card, then somewhere in the room (and probably nearby the TV) you'll have to put a box.

Last edited by talion83; 05-28-2005 at 11:57 PM.
talion83 is offline   Reply With Quote
Old 05-29-2005, 08:09 AM   #3
What is HD?
 

Join Date: May 2005
Posts: 2
Default

Thanks for the help--looks like next time around I should just run HDMI from equipment closets to each TV.
D123 is offline   Reply With Quote
Old 05-29-2005, 09:25 PM   #4
High Definition is the definition of life.
 

Join Date: May 2005
Posts: 115
Default

well the problem with that is, the signal probably won't back it. I was under the impression that most decoded sources/cables can't bring a signal very far without drop-off. I could be incorrect on this, but i'm pretty sure that is the reason that you were told to use RG6 from the closet to each of the TV's.

That is also why I said to use BNC coax cables with RCA converters if you wanted to do it that way. Plus, if you are controlling everything from a central room you would still need an individual box for each TV, else you will have the same channel on all of them. And you would need some sort of way to carry IR signal back to the main closet. Which would be either a wireless IR relay device, or one of the wired ones. You would probably be better off with a wireless one since the wired may not be able to travel a far distance, and even if they could it would probably have a delay on it.
talion83 is offline   Reply With Quote
Old 05-30-2005, 01:12 PM   #5
Administrator
 
rbinck's Avatar
 

Join Date: Apr 2004
Location: Katy, Texas
Posts: 16,021
Default

Currently the best solution is going to be to run three RG6 coax cables (up to 150 feet, RG11 if longer) from the equipment closet to each monitor location for component video. You should also run a cat5 and a 16/4 cable. The 16/4 cable is used for remote IR control (like Xantech) and the cat5 is because CEDIA recommends it for future. I'd run 2 cat5 cables myself.

Then in the equipment room use a HD matrix switcher, like the Key Digital KD-MSW8x3. Matrix switchers allow, in this case, allow eight inputs to be directed to any of three outputs. The monitors are connected to the outputs and your sources are connected to the inputs, which can include DVD players, VCRs, etc.

I have found the central cabinet to be somewhat limiting. DVDs and VCRs being the main problems. It works pretty well with DVDs if you use a series of 400 DVD jukeboxes (Sony DVP-CX985V)so the movies don't have to be inserted into a player that is located across the house. Even with the jukeboxes, you also need a remote control system like a Crestron or Pronto programmable control system for selecting the movies. Even then it does not work very well if you rent movies.

Most times it is just better to have a DVD player near the monitor so the DVD can be put into the player without having to walk to another room. Often there will be a combination of the two used, jukeboxed for movies owned and a local DVD for movies rented.

Also the video is just one problem. Then you have the audio as well. If the monitor locations are just stereo using built in speakers, then the matrix switcher can handle that also. If there is going to be a surround system use at the monitor locations, then the surround processors get into the mix as well. Most central closet systems will ustilize a whole house audio solution that has dual purpose of background audio (often with a music server) and the surround system for the video. We use separate surround processors & tuners, basically a 5.1, 6.1 or 7.1 receiver without the amplifiers built in, and distributed multi-channel audio amplifiers. But if you are going with individual surround receivers, then speaker wire needs to be run also for each location.

Edit:
In rereading your post it appears your wiring is already in place and there is a single coax run to each location. This pretty well limits what you can do to the cable card solution, unless you want to spend really big bucks.

The RF modulated outputs of HD cable boxes is a standard analog NTSC channel 3 or 4 in standard definition. HD RF modulators are very expensive and are not generally available outside of the broadcast TV channels. Additionally broadcast modulators have a 44 MHz output I/F frequency that is standard for the industry and converted to the actual broadcast channel by the transmitter. 44 MHz is below channel 2 which is 54-60 Mhz, so the output can not be used for in home applications. In short there is not any equipment to convert HD video to RF like there is for SD video, so distributed video is limited to the actual HD video signals.

Last edited by rbinck; 05-30-2005 at 01:35 PM.
rbinck is offline   Reply With Quote
Sponsored Links
Go Back   High Def Forum - Your High Definition Community & High Definition Resource > General Chit Chat > Cables & Connections
AddThis Social Bookmark Button
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads to How do I get HDTV over coax (RG6)?
Thread Thread Starter Forum Replies Last Post
A Discussion On Video Cable Construction rbinck Cables & Connections 31 04-24-2011 10:13 AM
Difficulty picking an antenna for hilly suburb lifedimension Local HDTV Info and Reception 15 10-31-2009 03:25 PM
1st HDTV. My cable looks worse. Pharmakon Flat-Panel TVs 39 12-23-2007 12:10 PM
Another Newbie Getting Started xcoyle Local HDTV Info and Reception 11 01-12-2005 05:28 PM


All times are GMT -6. The time now is 12:33 PM.



Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2004 - 2008, High Def Forum