Direct TV Satellite Dish Antenna System

Direct TV Satellite Dish Antenna System ,One of the biggest names in the industry when it comes to multiswitches would undoubtedly have to be SPAUN. The was founded back in October of 1969 and began by manufacturing OEM terrestrial antenna products. In 1991 they began distributing products under their own name and shortly after that introduced the first multiswitch with an integrated power supply. Since then they have continuously added to their product line such that today their product range consists of more than 300 products Direct TV Satellite Dish

Direct TV Satellite Dish Antenna System

Direct TV Satellite Dish Antenna System

Recently, SPAUN ventured into a new arena by beginning to offer amplifier and multiswitch products for use exclusively with the DirecTV satellite Pay TV system in the USA. DirecT TV it self came into existence back in 1990 and launched their  TV satellite services in June of 1994. The idea of watching TV via satellite instead of through a cable TV provider became so popular that in just a little over a year, they reached one million subscribers.

Just ten years later in 2005 they had 15 million subscribers! In 2007 DirecTV began offering 70 HD channels and today that number has risen to over 130  dish tv hd channels.When you talk to most people about DirecTV, they think of DirecTV as merely a providers of TV services to individual end users such as LNBs those in private homes. But the truth is DirecTV also provides service to direct tv commercial end users such as hotels and larger apartment buildings


Here the commercial direct tv end users want to provide independent satellite TV signals to each hotel room or apartment with all of this being accomplished using a single satellite antenna. Obviously, a standard DirecTV satellite TV system can’t handle this all by itself. That’s where SPAUN comes in.

SPAUN has developed an array of products exclusively for the DirecTV SlimLine dish antenna system that allows the incoming satellite signals from five different satellites to be distributed to multiple receivers using only the one satellite dish TV .

The SlimLine LNB (Fig.2) comes with four independent outputs that when used normally allow the end user to connect up to four satel-lite receivers. But when used with the SPAUN components, 16 and more receivers can be connected.If you take a close look at the SlimLine LNB, you might say to yourself: “I only see three LNB’s”. And, yes, that’s exactly what it looks like from the outside. On the inside however, much more is going on.

The LNB on the right is actually three LNB’s in one that together with the other two add up to five.Then you might be asking yourself how it can be possible to switch between five different satellites and at the same time give all the connected receivers access to these satellites independent of each other.


The answer again lies in the SlimLine LNB. A typical LNB converts the incoming satellite signals to the 950 to 2150 MHz range and sends these signals via the coax cable to the receiver.The SlimLine LNB does this and more. A portion of the incoming satellite signals are converted to the 250 to 750 MHz range. Through a variety of switching functions within the LNB, the 250 to 750 MHz range and the 950 to 2150 MHz range are both made available at each of the four outputs on the SlimLine LNB. The receiver chooses which band and polarization it wants simply by switching between 14 or 18 volts and also whether or not to include a 22 KHz signal along with the proper voltage.


Direct TV Satellite Dish Installation

We found the idea of using SPAUN switches in this application very intriguing so we decided to taker a closer look at how all of this works. SPAUN was kind enough to provide us with a number of their components so that we could put them to the test.

The number of receivers that need to be serviced will dic-tate what SPAUN components will be used and how many of them will be needed. The most basic set up will provide outputs for as many as 16 receivers. For example, the four LNB outputs can be connected directly to a SPAUN SMS 41609 WBP switch (Fig.3) without the need for any amplifier components.

This switch already comes with the 16 outputs needed for 16 different receivers. Just plug the included power supply into a wall outlet, con-nect the other end into the proper jack on the switch and it’s ready to go (Fig.4). All of the receivers connected to this switch can independently access all of the satellite signals from the Direct dish Satellite System antenna as if each receiver were connected to its own antenna.

How does this work? The concept is actually quite simple. The receiver has the ability to send four different control signals (14V, 18V, 14V + 22 KHz and 18V + 22 KHz) via the coax cable to the LNB so that the proper band/ polarization is selected. But when the SPAUN compo-nents are used in between the receiver and the SlimLine LNB, the sequence of events unfolds with a slight difference. The receiver still sends out the proper control signal depending on the band/polar-ization it wants to receive but, instead of this finding its way to the receiver, it ends up sent to a SPAUN multiswitch. As far as the receiver is concerned, it thinks it’s connected to an LNB.

The SPAUN SMS 41609 WBP multiswitch comes with four satellite signal inputs. Each of these inputs sends its own unique control signal to the SlimLine LNB:Input 1 – 14VInput 2 – 18VInput 3 – 14V + 22 KHzInput 4 – 18V + 22 KHzIn KHzIn this way, all of the avail-able satellite IF bands from the SlimLine LNB are delivered to the SMS 41609 WBP multiswitch at the same time. The switch then routes the desired band/polarization to the connected receivers based on the control signals received by the switch from each of the receivers.

As mentioned earlier, one of these bands is the 250 to 750 MHz frequency band. Depending on the Direct TV receiver model, an internal or external BBC (base band converter) module is used to upconvert this frequency band to the standard satellite IF band so that the receiver can access these signals.If the satellite tv installation to be installed involves the use of more than 16 receivers, then additional multiswitches need to be used.

In some cases, this system must also be capable of handling terrestrial TV signals as well. The SPAUN SMS 41609 WBP multiswitch does not have a terrestrial input so for applications like this the GMS 51609 WBP can be used. Also, now that we are deal-ing with more than one multiswitch, it becomes necessary to include signal amplifiers Broadband and signal taps to the SPAUN set up as well.


For the first part of our test we wanted to set a baseline measurement from which a comparison could be made when the SPAUN components were added. So, before any SPAUN components were put in place, we measured and recorded all the active transponders on the five satellites using the signal strength display that is included in the DirecTV receiver setup menu.

test we used the following SPAUN components:1xGBK 5500 WBP Wide-band Launch Amplifier1xGTS 525 WB Penta Split-ter1xGZR 5550/15 WB Penta Tap with Directional Coupler2xGMS 51609 WBP Compact 16-Output Multiswitch These components were connected to each other as shown in the diagram in Fig.5. The actual connected components can be seen in Fig.6. In the normal setup, the four cables from the SlimLine LNB were routed to a ground-ing block (Fig.7) at a location outside of the house just before the cables went into the house. This was a convenient point to connect the SPAUN components.


The four IF cables were removed from the grounding block and connected to the four inputs on the SPAUN Launch Amplifier. This particular setup has the capability to provide independent satellite signal outputs for up to 32 receivers.

For the purpose of our tests we opted to measure the outputs at the eight Measuring Points (MP) highlighted in Fig.5. The unused outputs were terminated with 75 Ohm terminations. The MP’s were also terminated with 75-Ohm terminations when they were not connected to a receiver.

As with the first part of the test, all the active transponders for the five satellites were measured and recorded for each of the MP’s (MP05 to MP12) using the same Direct TV receiver menu display. All of the collected data was organized and tabulated in seven different tables (one for each satellite) so that each MP output could easily be compared with the other outputs as well as with the results of the first part of the test.These results can be seen in Fig.8 thru 14.

Looking closely at each of the tables you can see that the measured signal strengths at MP05 to MP08 compared very nicely to the normal setup. In fact there was very little difference between any of the measurements and in some cases there was no difference at all. And as far as watching TV goes, all of the channels available with the normal setup (SD and HD) were also available at the four MP outputs.

There was, however, some differences between the measured signal strengths at MP09 to MP12 and the normal setup. In this case the measured signal strengths were somewhat lower at these four MP’s than those of the normal setup. Although the signal strengths were lower, it did not interfere with any of the available TV channels. All of the available TV channels (SD and HD) could be viewed through any of the four MP outputs.

So, is the number of receiver outputs using these SPAUN components limited to 32? Absolutely not. If you need more than 32 outputs for your specific direct response tv setup,simply add additional SPAUN components! The possibilities are endless. In the end all of the SPAUN components functioned exactly as they should. Does this surprise you?


Direct TV Satellite Dish Antenna System – It shouldn’t. SPAUN has been around since 1969 and in that time has built up quite a bit of experience when it comes to manufacturing satellite components. They make quality products that fully live up to expectations.

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