Lnb Directv
Uncategorized July 20th. 2010, 7:07pmLnb Directv
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DIRECTV Five LNB Ka/Ku Slim Line Dish Antenna
Setting Up Your Own Satellite TV System Made Easy
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Making the decision to switch from cable to satellite TV is an easy thing to do. In general, satellite service comes with a wider range in programming options, higher resolution sound and picture, and better quality customer service than cable TV service. What is not so easy is setting up your system by yourself. That is, if you do not know how to do it properly.
Though some satellite TV providers will throw in equipment and installation at no extra cost when you sign up for their service, there are a number of reasons why you may not take them up on this offer and choose, instead, to put together your system yourself. If you are planning on installing your own system, here are some tips to serve as guidelines in making the process run as smoothly and efficiently as possible.
Personal safety is an important thing to take into consideration when doing any projects at home. And there are certain safety issues specific to installing a satellite TV system that you should be aware of before embarking on this project. For instance, since you will most likely be installing your satellite dish on the roof of your house (for optimal signal reception, your dish needs to be installed in a high location without anything blocking its view of the southern sky), you have to be careful about taking the necessary precautions to prevent injuries from falling. When climbing or working from tall ladders, it is always a good idea to have someone there at the bottom as a spotter to hold on and help keep the ladder stable. So ask a friend to give you a hand. It is especially important that you make sure you have someone there to help you if are installing a satellite dish that is on the larger side, since big dishes can be too much for one person to handle alone.
Another important thing to keep in mind regarding safety is that you should never attempt to put up your satellite dish if it is raining or particularly windy. Doing so can be extremely dangerous. You might slip, and important pieces of equipment can fall and be damaged. You should be even more careful if you are installing your dish on your chimney, since wind can contribute to the chimney collapsing. Also, you will never want to handle cables or deal with wiring when it is wet outside.
In addition to a satellite dish, the other satellite TV system components that you will need include a mount, a LNB (Low Noise Blocker), a receiver, a decoder, and an assortment of cables. If it is your first time installing your own satellite TV system, you will also want to make sure you read all instructions thoroughly and be patient. Remember to take your time with each step, since trying to rush through the process can be a safety risk and also lead to improper installation. Rushing can also make the process move slower, since you may have to back track and repeat steps you did incorrectly the first time around.
About the Author
For people who aren't hands-on people, <a href="http://www.direct.tv/">directtv packages</a> eliminate the need to install your system yourself. <a href="http://www.direct.tv/direct-tv-packages.html">direct tv packages</a> come with free equipment and professional installation.
Question about Two cables on the Directv DVR.?
I did not realize that you had to have two input cables for the Directv DVR. Is there anyway around this?..There isnt a way to run an extra cable for the DVR even though there is a spot open on the LNB. Is there anyway to get around this, such as splitting or anything?
Yes. I am able to use it but it kind of defeats the purpose of buying it if i can only record what im watching. Could have bought a good dvd recorder.
You should still be able to use just one cable. You just won't be able to watch something else while you're recording a different program at the same time. You can watch a recorded program while recording live programming but you just won't be able to watch live programming while recording another live program on a different channel.
A splitter will not work. Those jacks on the DVR output voltage to tell the LNB which polarization the box is looking to receive. You could damage your box if you hook up a splitter so don't try it.
I remember a device that took the LNB IF and added 500MHz or so to the one side so you could squeeze both signals onto a single line of coax. As soon as I can remember what it was called, I'll edit my post. That would work for you but if I recall correctly it does cost some money and probably wouldn't work with those newer triple LNB satellite dishes, but if you have the single orbital position satellite dish it would work fine.
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EDIT: Found it! It's called a "stacker"
http://www.solidsignal.com/prod_display.asp?PROD=SUS575-T
This one says it's especially for DirecTV DVR's but the only difference to me is that it looks like it can multiplex a cable TV or TV antenna line into it. It's the same price anyhow. I guess if you REALLY CAN'T run another cable at all, there is a solution, albeit a $143 one....
http://www.solidsignal.com/prod_display.asp?PROD=SD575D
I can't tell from their page if that includes the destacker or not, but if it doesn't you'll need that too. It's $72:
http://www.solidsignal.com/prod_display.asp?PROD=SD575
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Sorry I guess you should have got a good DVD recorder and some rewritable DVD's. A DVR holds much more, plus has the TiVo features and can rewrite an unlimited amount of times, but if you want the dual tuner capabilities you have to run two cables or use the expensive stacker method I mentioned before. Just to give you a technical background of why, I'll explain.
Satellites transmit groups of channels on transponders. The range of frequencies they can use is limited to 500MHz. In order to fit as many transponders as they can into those 500MHz they use opposite polarizations, left hand circular and right hand circular. When the LNB is configured for left hand circular, it blocks out all right hand circular signals, and vice versa. This effectively doubles the capacity of the satellite allowing frequency reuse without causing interference. Now when the LNB receives the 12GHz signals from the satellite, it changes them to 950-1450MHz. This is because 12GHz is such a high frequency that it doesn't travel over cables very well at all and the signal would never make it to your receiver. 1GHz is much more manageable than 12GHz so the LNB downconverts it and sends it to the receivers. It can only do this one polarization at a time as the left hand circular and right hand circular polarization transponders are on the same frequencies. The receiver tells the LNB which polarization it wants by the voltage it sends to it, 13 volts or 18 volts. If you only use one cable, it can only ask for one polarization at a time. Using the second cable it is able to use the one side of a dual output LNB for left hand circular and the other side for right hand circular allowing the receiver to get every channel sent to it and you can watch and record whatever you want at the same time.
Now, there is a cheaper, half solution that could run you about $10. This would be to run a splitter with a DC block on one lead going to the DVR. The other lead would go directly to the splitter and the one output to the dish. This will only work if you want to watch a channel and record a channel at the same time that are both on transponders that use the same polarization. 50-50 chance! Don't omit the DC block. It's there to protect your receiver from sending two voltages into itself. I've never tried it, and it would somewhat work theoretically and your box probably would freeze at times not knowing what the heck was going on, but if that's all you can do, that's all you can do!
