Install a second satellite dish. While this isn’t ideal, you could easily have one wideband LNB feeding your Freesat and one feeding your Quad or Octo. The outputs from each LNA might then be split to go to two mixers, each with a different local oscillator frequency. This way you finish up with four wires, If a standard twin tuner Sky box didn’t have two satellite feeds you could only view/ record one quarter of the satellite services at onetime, meaning if your were to set a recording and wanted to watch a service that was on one of the other 3 quarter satellite bands this wouldn’t be possible. Terrestrial based PVR’s which receive from a TV aerial/ antenna do not have to content with a switching signal so the signal can effectively be split inside the PVR itself.

Here is my latest offering, asking why do some satellite receivers, including Sky and Freesat boxes have two satellite F connections? Believe it or not, there is more than one potential reason for this as some satellite set-top-boxes have two F connectors for one reason and some have two connections for another reason. In this blog, I discuss the most common reasons. Let’s begin. A dSCR or dCSS LNB will allow a Sky Q box to be connected on a single feed which is helpful for when extra cables can not for any reason be installed between your satellite dish and Sky Q box. When you do this, you must change the LNB setting to ‘SCR’ mode with the settings menu on the Sky Q box. There is not switching on the LNB again, it instead looks for the frequency of the transponder for the channel that the satellite receiver has requested and oscillates it to the lowest available frequency. This allows for multiple programmes to be recorded at the same time without the need for extra satellite LNB connections,like is required with universal LNB’s. As I mentioned above, the frequency range utilized by Wideband LNB will cancel out that of terrestrial TV services. The combined style multiplexed wall plates accept coax cables with signals that are already combined, and separate them before they reach your equipment. This won’t work with Wideband LNB, as – aside from Quad models – they only feature one satellite cable connection. When buying a satellite system, it can often seem pretty daunting reading the specification, understanding the terms and what they mean for you. One thing people often write about is the LNB. So what is an LNB? This guide explains what an LNB is and what you need to consider when purchasing a satellite system. There are 3 main reasons for selecting the correct LNB.An LNB is a device mounted on the dish, designed collect and amplify the satellite signals and convert them from a high frequency to a lower frequency. LNBs can be controlled to receive signals with different polarisation (horizontal and vertical). The signals can then be carried down the cable cable to a satellite receiver. You’re probably already aware that there are loads of different types of coaxial cables on the market and if you’re looking for the best cable to be wiring your TV system with, then read this article for all you need to know. I will go through all the common coaxial cable types and terms, showing which coax cables to avoid and what to look out for. Once reading this you will be able to decide what coaxial cable will be best for your aerial or satellite system. It could also be that you're have poor TV reception and replacing the connecting coaxial cable will help improve your TV signal. ASTRA Universal Wideband LNBs with an oscillator frequency of 10.40 or 10.41GHz are entering the market. The intermediate frequency band is much wider than in a conventional LNB, as the high and low band are not split up.

One way of getting the cable cost down is to reduce the amount of copper inside the cable. This is where Copper Clad Steel & Copper Clad Aluminium cables come in. Although you save money, you lose out considerably in terms of performance so I would opt for all copper conductors instead if the budget allows it. The steel conductor in CCS is prone to rusting over time and the steel conductor doesn’t have it very good current carrying capacity. As there is a considerable voltage drop with cables lengths exceeding 30m using a CCS cable for satellite LNB connections is not a good idea as the voltage drop could cause issues with the LNB switching. When installing a coaxial cable, it is imperative at that the centre conductor and the cable braid and centre never touch, even one single strand of the cable braid touching the centre conductor will create a cable short and could result in loss of TV signal altogether. This definitely will happen where line power is present which could be powering your satellite dish, amplifiers and magic eyes. As the dielectric inside a coax cable is to primarily stop the conductors touching this must made from a non-conductive substance with insulating properties. This is most commonly a foam filled substance,but some coax cable types use a PVC/ air where the PVC keeps an air separation.The dielectric also helps define the impedance of the coaxial cable, so it is also carefully keeping the correct distance between conductors. For this reason,it is important not to squash the cable at terminations or kink the cable when installing it. It’s good that I have already gone over how universal LNB’s work as it will help you understand the Sky Q LNB and how the Sky Q LNB is different to a universal LNB. Sky Q LNB’s have two separate cable inputs like a dual LNB but they work very differently. One cable is connected to a vertical output and the other a horizontal output. There is not switching of the LNB between horizontal and polarised signals as both the cables are carrying different services. This means when using a Sky Q wideband LNB that the Sky Q box must be connected with two cables must be connected to receive all the services and channels. There are ways of connecting a Sky Q box with a single cable as I mention later on the blog. But as always a hard mains reset and a 'first time install' to correctly identify the attached cables/LNB type may be needed.

Universal LNB’s 

There are other types of coaxial connection which you may confuse with a satellite twin tuner, LNB out or something similar. I have listed some of the most common below. Aerial Input Throughout the world, most satellite TV transmissions use vertical and horizontal linear polarization but in North America, DBS transmissions use left and right hand circular polarization. Within the waveguide of a North American DBS LNB a slab of dielectric material is used to convert left and right circular polarized signals to vertical and horizontal linear polarized signals so the converted signals can be treated the same. For your reference universal LNB’s oscillate signals within the KU satellite band which is 10.7Ghz to 12.75Ghz down to the IF satellite band, 950Mhz to 2150Mhz. That's why it was a good idea to try and aim the dish between the two slots, so you got good coverage of both. Unfortunately, if you use the on-screen meter, it uses just one specific transponder. When you see the terms SDU and MDU, these stand for Single Dwelling Unit and Multiple Dwelling Unit meaning domestic and communal basically. This means that cable that is certified for “MDU” use is suitable for both domestic and communal installations but not the other way around.