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Discussion in 'DIRECTV General Discussion' started by JoeF, Oct 23, 2008.
Any chance these exist (in a consumer grade) for HD, e.g., ATSC?
No, sorry. Simply does not exist and I don't expect it will, at least not in the near term.
Thats what I thought. What I would really like is an ATSC modulator (QAM?) which would allow me to have home distribution over coax. Then the remote digital tuners in the TV's could simply tune to the corresponding digital station to watch whatever component was being sent over that channel.
Why do you think this will never happen?
Yep. As Harsh said, you may not need the 550, but to me it makes life much easier. Eliminates any static and herringbone distortion. Plus it gives you the ability to feed IR signals as well.
Short answer is all of the copy protection mechanisms.
Long answer is there are some solutions, like Gefen and others, that are thousands of dollars, require lots of hardware and more cabling then exists in most current homes. Gefen is supposed to have a 4x4 matrix switcher to do HD to 1080p with IR control, but is just vaporware at this time. They have been working on it for over a year. Supposedly 1080p is the hold up. Right now the best I have seen is by Gefen, is a 4x4 matrix switch and can do 1080p with IR. The problem is that you need 2 cat 5 runs to make it work. The bigger problem is that it will cost over $5000 for the switch and all of the hardware!
Let's have a bit of fun with math.
HD 4x4 matrix est $5000
Let's go long on the "lifetime" of the matrix and/or receivers before something better comes along. Let's say 10 years. That now breaks down to $500 per year, for 10 years. Break that down per month = $41.66/month. That equals just over 8 additional receivers at $4.99 each.
So you could add 8 additional receivers at $4.99 each per month and have them active for 10 years, just to break even on the cost of the above switcher.
Do able? Sure.
Cost effective to do so? Not even remotely close.
Does this set-up allow you to switch from one receiver to another via the remote?
Each modulator sends on a different channel, so yes, the TV remote can and does change from receiver to receiver. Obviously, it doesn't give you any choice of what program each receiver is tuned to so you have to pick your "default" programming carefully.
I just read the 550HHR manual, and I don't understand how I would switch from from one receiver to another or from a receiver to Cable/OTA.
Each receiver would show up on a different conventional TV channel. You would tune to the channel on your TV to watch whatever programming is currently on that receiver.
You can't change channels on the receiver, just which receiver you're looking at.
You would use your TV's tuner to tune in to each channel. The modulators will insert a channel (usually 80-89) in to the stream.
If you are like me, I have lifeline basic cable plugged in to the main input on the 550. The 5515's are plugged in to the expanision ports. This way I get my local channels (2-69) and then also have channels 84, 86 and 88 (you have to put a space between modulated channels). So on every TV in my house, if I use the internal tuner, I get basic channels and my modulated channels. You would then need to use the remote control that controls the box that is slaved to that particular modulator to change the DirecTV channels.
At my house I have all of the DirecTV boxes set to RF. That way I did not need to add the IR send/receive units that ChannelPlus offers. So I use my TV remote to change the TV channel to 84. Then I use the DirecTV remote to change the DirecTV channel to what I want to watch.
Please note that your modulated channels will only be available on the TV's NTSC internal tuner input. You will not see any of these channels on the DirecTV box.
Be aware that your cable company may have a lot of digital signals on that coax into your house, and those can interfere with mixing cable with your in-house modulators. I am using a low-pass filter to chop the cable signal off at 380 MHz, and then inserting my own modulated channels starting at cable channel 65 through 115. All of my DirecTV units, as well as several security cameras, are watchable on every TV that has an NTSC tuner in it (all of mine do).
Good point Carl.
The cable company puts the digital filter in at my tap. I don't remember what frequencies they are filtering, but I know it keeps out all of the analog pay channels (espn, cnn, HBO, etc.) but allows in the lifeline basic channels (2-69) and my cable modem.
Definetely something to be aware of when implementing this solution with cable and modulated channels.
I have a follow up question on mirroring. My setup is like this:
I have a HR20-700. I am using the video out to go back to a RF Mod.
I have split the coax into tuner 2 with one going to the receiver and the other going to the rf modulator to backfeed to another tv for SD.
This has worked ok except that I have only been able to watch the channel I am recording.
Has anyone ever had this happen?
If I understand you correctly, you are feeding 1 receiver to 2 TV's. Therefore, you will only be able to watch what that receiver is tuned to. There is no way to have 2 different channels viewed off of 1 receiver.
No. Not two different channels. What I mean is the receiver should be able to record one channel while I watch another. The receiver is acting like I have only one line input. I know the second tv will always be on what I have the primary one on. Just curious about why I can't record one and watch another and what may be causing that.
So you are trying to diplex the rf output of the modulator onto the coax that feeds tuner 2, then diplex it back out near the dish (or multiswitch)? Given that you have separate inputs for sat1 and sat2, you don't have a SWM signal, so you must have a BBC at the sat2 input.
Put the BBC before the far diplexer (the one near the dish/multiswitch). Then you will probably be able to diplex.
You can't use regular splitters, you must use diplexers, and sometimes that gets very tricky with the newer HD feeds. DirecTV does not support diplexing with the HR2x series units.
What lines would I feed where with the diplexer?
Re-reading your post #34, here is what you need to do.
1. Take out your splitter. Hook the coax from the dish back to the HR20 tuner 2 input (with BBC) like it was originally. Reset the HR20. That should get you two tuner functionality.
2. Hook the composite video (yellow) output from the HR20 to the input of your modulator. You should now have whatever the HR20 is showing available as an rf (channel 3/4/whatever) signal on the coax output of the modulator.
Now, if you already have another coax going from that location to the remote tv set, just connect that to the output of the modulator and your remote tv should be watching what is on the HR20.
If you do not have another coax going to the remote tv, the best, and possibly easiest thing to do is to run a coax cable from the HR20 location to the remote tv.
If that just isn't possible (for whatever reason), then you can try diplexing. You need to buy a couple of good quality diplexers (do a search here, there have been several threads about this and lots of posts). When you have the diplexers, do the following.
1. Trace the coax that goes to tuner 2 on your HR20 back to where it comes from (dish or multiswitch as applicable).
2. Remove the BBC from the tuner 2 input and connect it at the other end of that coax (dish or multiswitch end). Keep it oriented in the same direction - the pigtail has to go toward the HR20.
3. Connect the output of the bbc (the pigtail) to the satellite port of one of the diplexers.
4. Connect the coax that goes to tuner 2 to the common port of that diplexer.
5. Connect the ota port of that diplexer to a coax that goes to the remote receiver.
6. At the HR20, connect the coax from the dish to the common port of the second diplexer.
7. Connect the sat port of that diplexer to the sat2 port of the HR20.
8. Connect the output of the modulator to the ota port of that diplexer.
Now check and make sure your HR20 is working with both tuners (record one, watch another). Then check if your remote tv is working.
If everything is working properly, great. If not, you need to hook the sat 2 input back up the original way (directly to the dish with bbc at the HR20), and run a coax to the remote tv anyway.