DVB-T is an abbreviation for "Digital Video Broadcasting — Terrestrial"; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in the UK in 1998.
DVB-T2 is an abbreviation for "Digital Video Broadcasting – Second Generation Terrestrial"; it is the extension of the television standard DVB-T, issued by the consortium DVB, devised for the broadcast transmission of digital terrestrial television. DVB has been standardized by ETSI.
As of 2014, it was implemented in broadcasts in the United Kingdom (Freeview HD, eight channels across two multiplexes, plus an extra multiplex in Northern Ireland carrying three SD channels).
Digital Video Broadcasting - Satellite - Second Generation (DVB-S2) is a digital television broadcast standard that has been designed as a successor for the popular DVB-S system. It was developed in 2003 by the DVB Project, an international industry consortium, and ratified by ETSI (EN 302307) in March 2005.
Logical Channel Number. The LCN is the digital channel number that is used to select a channel on your box, for example 1 for BBC1 or 40 for BBC News 24. LCNs are constant, just as you might find almost every analogue TV has BBC1 on the first button, BBC2 on the second and so on.
An electronic program guide (EPG) is an application used with digital set-top boxes and newer television sets to list current and scheduled programs that are or will be available on each channel and a short summary or commentary for each program. EPG is the electronic equivalent of a printed television program guide.
It would be great if all TV’s had LCN and weeks EPG however it seems this is not the case, with the Sky box the LCN and EPG works well, but with other boxes and TV’s it seems to be hit and miss. Specially with satellite, where often you need to tune into the channel before the guide starts to work, and even then it lags behind. My old Panasonic TV worked very well, the old LG TV was slow and patchy which was a pain as the LG had a built in hard drive so you really needed the week EPG so set it up to record. With some set top boxes all I got was now and next.
Today with “Smart” TV’s the program guide could be sent on the internet, but it seems it rarely is, only Sky seems to have integrated so you can click on a program either internet or live and it will record it for you.
I have many times returned to the TV or set top box set to record and it has failed, again Sky seems to have got it right, and very rare for the Sky box to miss one.
If I bought a TV costing £500 and above I would expect the TV to have all bells and whistles, but last two TV’s cost £150 each, one 32” the other 43” and for that price I have to expect there will be some problems. I had not a clue what LCN was until after I bought my TV's. And as to EPG it is pot luck. At home my TV is in real terms a simple monitor, the Sky + HD box does all the clever stuff. So I do not want to pay out for a all bells and whistles TV. At my mothers house however the Sky is not really set up, and it would be nice to have Freeview working. However it seems Freeview can't make up their minds what they are doing, so it is a regular thing to get a notice coming up asking one to retune. But it is cheap, not free you need a licence, but still cheap.