Sab23 wroteThank you for your input.
The thing is we already have a satellite cable from the dish guy. The person who installed the tv told us about the machine and said that it will be a link between the dish cable and the tv, which got me a bit confused. Unfortunately I was not home to ask him more about it and that is my first smart tv experience.
Is it the same box as you are talking about?
He may be talking about an HDMI cable, but it is sort of confusing. If you have a box from an 'ishtirak cable' guy, the box won't be hd no matter what. If you bought a receiver from a regular satellite guy and now you need to upgrade the receiver, then follow what I said before. If otoh, your receiver is HD ready, then you need an HDMI cable. If you need a cable, make sure you get something have decent though. The 5-10kLL ones aren't ones I would recommend.