back to article British 4G mobile data rollout 'will mean NO TELLY for 2m homes'

A pressure group campaigning for high-quality broadcasting has warned that 4G phone networks could knock out TV in one in ten UK homes - and by the time anyone notices it will be too late to fix. The Voice of the Listener & Viewer, a membership and donation-funded lobbying body, wants guarantees that once next-gen mobile …

COMMENTS

This topic is closed for new posts.
  1. RayG
    Go

    Destroying TV availability for better mobile internet? Bring it on!

    1. Anonymous Coward
      Anonymous Coward

      TV is far superior to mobile internet, especially while it's so damn expensive to even use mobile internet and I would prefer to use a proper full size keyboard and laptop over some 'smart' phone. OFCOM proves themselves to be useless yet again!

      Note: I am NOT 'Anonymous' I don't condone DDoS or any of their childish antics, just 'cos The Reg staff in their infinite wisdom, forces me to wear their stupid logo!

      1. BristolBachelor Gold badge
        Pint

        I feel sorry for you. Perhaps you need to upgrade your laptop? Mine gives me a whole array of icons to choose. For example this one is for BEER

  2. Anonymous Coward
    Anonymous Coward

    Lucky Them

    There's only crap on TV these days.

  3. Big_Ted
    Angel

    If it will speed up 4g they can put an antenna in my garden.

    They can knock out my tv as well, thats what iplayer etc is for..........

  4. Anonymous Coward
    Anonymous Coward

    A partial solution...

    Re: "Some respondents argue that by the time 4G coverage is extended into the rural areas where Freeview signals are weak, and where old people live, then the issue will disappear thanks to the magic of technology (such as better base-station filters)."

    Perhaps if 4G deployment was delayed by a year or two, all these old people will have died off?

    Maybe the government could introduce cutbacks in rural healthcare to speed up this process?

    Maybe the BBC could employee Russell Brand and Jonathon Ross as programme schedulers to further speed up the 4G rollout?

    Finally, maybe TV programmes could be made available over 4G with better reception than the few surviving old people originally had?

    1. This post has been deleted by its author

  5. Bradley Hardleigh-Hadderchance
    Go

    Ha Ha!

    I don't own a tube TV!

    (Or any other come to think of it)

    1. Anonymous Coward
      Anonymous Coward

      Re: Ha Ha!

      we have a 15" trinitron from some disgusting old bat when she died so you know it was never used. picture is beautiful. looks crisp as hell with standard SD freeview, flickers a bit but thats kinda sexy for me now that all my other screens are LED backlit.

      thank you so much for reading my post

      1. Anonymous Coward
        Anonymous Coward

        Re: Ha Ha!

        What a plonker. Sadly he may breed and produce more.

  6. Ken Hagan Gold badge

    Adjacent?

    These signals can't be adjacent to every DTT band, so we could just move the handful of worthwhile channels out of the way and put shopping channels in the line of fire.

    1. Phil O'Sophical Silver badge
      Boffin

      Re: Adjacent?

      You've misunderstood the problem. Most current amplifiers are wideband, accepting signals across the whole DTT band. When some DTT signals are moved out of part of that band, and stronger 4G signals appear on those frequencies, the amplifiers will pick up those signals and may overload. At that point the *whole* DTT band gets messed up as it passes through the overloaded amplifier.

      That's the allegation, whether it will be widespread is another matter.

      1. Brian Morrison
        Boffin

        Re: Adjacent?

        Given that many of the amplifiers in use are of typical TV industry design and build quality, I don't see them being very likely to cope well with the LTE signals within their passband.

        The problem is that the amplifier either compresses sufficiently on the LTE signal so that its gain falls and reduces the DTTV signal levels or that in addition intermodulation between the various signals causes the signal:noise ratio of the DTTV signals to reduce and the error rate to go up noticeably. Putting filters in the base stations will not help at all unless the DTTV receivers are very close to an LTE base and hence are receiving noise sidebands from the LTE transmitters, it requires the filtering to be applied at the receive end and in many cases the state of the kit in homes and particular in shared access TV properties such as tower blocks and rented properties will be dreadfully poor.

        It's going to be ugly, there are so many diverse ways of receiving TV that every fix implemented is likely to be bespoke.

      2. Test Man
        Stop

        Re: Adjacent?

        @Phil O'Sophical - Oh! OK, so, in theory, would buying an amplifier or aerial for a specific transmission group (lets say group A for the London region -which only covers UHF channels 21-37) negate this particular problem?

        1. Phil O'Sophical Silver badge

          Re:grouped amp

          The best answer is probably "maybe". If the 4G signal is being picked up by the aerial, and if the filter at the amp input is reasonably sharp, then it may be OK. That's the principle of the add-on filters being proposed.

          If the interfering signal is strong enough to be picked up by the amp directly (and very few are in screened cases) then no amount of filtering/grouping will help.

          A better solution may be to remove the amp altogether. Many people fitted amplifiers to improve their DTT reception when it was broadcast at low power. Now that the switchover is almost complete most transmitters have increased the power of the DTT signals to a level where an amp should only be necessary to feed multiple TVs, and they're usually pretty low-gain (10dB, versus 26dB for a masthead amp).

        2. Richard 12 Silver badge

          Re: Adjacent?

          It would, except that almost everywhere now has or still needs wideband antenna and amps.

          Originally because of Channel 5, later due to the various Freeview shuffling stages as even if the final result was a given band, the muxes went through others to get there.

          Most of greater london has no need of amps anyway, it's once again people in the countryside (notably Scotland and Wales) that will get hit the worst.

      3. Dave Bell

        Re: Adjacent?

        The amplifier problem may be a hangover fromn the past. When the transition was made from mixed analogue/digital to digital only, transmitter power was increased, and we were able to stop using an amplifier.

        From my own experience, there were some pretty dodgy aerial installers in the early days of digital, and there is still a lot of low-quality cable being used, in a combination of poor initial specification and age.

  7. Anonymous Coward
    Anonymous Coward

    Give me 5

    Do you recall just before Channel 5 (in the UK) came on the air, they had to send a fleet of techs around to peoples houses around the UK, to retune poor sods VCRs as Channel 5 was interfering with the VCR to TV signal?

    Something like 10 million homes, if this has any accuracy: http://www.spokesman.com/stories/1996/sep/17/britains-new-tv-channel-must-retune-nations-vcrs/

    1. Test Man
      Thumb Up

      Re: Give me 5

      Yeah. In some regions (like the London region), Channel 5 could only be placed at UHF channel 36 (-ish), which is what some external equipment (such as VCRs) were also defaulted to ("broadcasting" down the RF lead). Those needed to be "retuned" (changed to broadcast on another UHF channel) by twiddling a switch thing using a screw or similar implement.

      This wouldn't have affected any region where Channel 5 was at a different UHF channel (such as the Yorkshire region, I'm pretty sure that their channel lineup started at around UHF channel 40-something - I remember having to tune my TV back in Bradford Uni in the 90s). It also didn't affect anything (IIRC) connected via SCART or other connection other than the RF lead.

      This is different though, as it's not equipment being affected but potentially the actual reception of certain "digital" muxes that broadcast on UHF channels 60-68 and only in certain areas.

      That was in areas where the analogue signal used UHF channels that covered UHF channel 36, which was where Channel 5 was roughly. For homes where the TV channels started at UHF channel 40, there would have been no problem

    2. Anonymous Coward 15

      Channel 36 isn't just VCRs

      A lot of old computers too.

      1. Test Man
        Happy

        Re: Channel 36 isn't just VCRs

        Oh God, YES! :D

        BBC Micro, Commodore 64, those were the days when you hooked up your computer to the TV via an aerial!

  8. JohnMurray

    Not

    just old people. LOADS of young people also couldn't see the miniscule screw on the vcr rear to tune the vcr output to the tv channel.

    Then along came scart..

    I've got freesat....maybe not even that soon....I'm considering the validity of becoming a TV-free house....even with the hectoring threatening letters from capita.....

    1. LinkOfHyrule
      Thumb Up

      Re: Not

      I've gone telly free - its great - right now the house is all lovely and peaceful!

      My peace was spoilt the other week by some bloke from TV licensing knocking on my door, I just ignored him and he popped a note through my letter hole saying he'd be back - bring it on! Next time ill hand you back all the unopened letters from your organisational telling me I must be a criminal because I don't watch endless repeats of Come Dine With Me!

      1. Anonymous Coward
        Anonymous Coward

        Re: Not

        They will find a way oh yes they will find a way.

      2. UMTS =(

        Re: Not

        Careful though, you may not have a TV but you still need a licence for mobile phones and pc's. Although I'm not sure how they'd prove you watched TV.

        1. JohnMurray

          Re: Not

          You only need a licence to receive broadcast television.

          If you use the inter-web/net/trash to watch on-demand services, then you need a licence only if they are being broadcast at the same time as you watch them.

          You do not need a licence for mobile phone video unless as above.

          Who cares whether they can prove it...to date all they do is drown you in mail and then the visits start, and then they visit you at various times in the evening.

          Note, from the licencing website:

          "Our officers may visit the licensed place at any time to check that our records are correct and inspect TV equipment. However, you don’t have to let them into your home or business"

          That's that solved then: FUCK OFF

          1. S4qFBxkFFg
            Trollface

            Re: Not

            "If you use the inter-web/net/trash to watch on-demand services, then you need a licence only if they are being broadcast at the same time as you watch them."

            Hmmmmm. If I watched TV this might be something to ponder - given the short delay inherent to digital broadcasts would they even count as being watched "at the same time"?

            Claims of this sort could be taken to a possibly ludicrous extreme, given c isn't infinite...

            "Your honour, given that my client lives about two hundred miles away from the transmitter, he was watching the programme at least one millisecond after it was being broadcast."

            1. Test Man
              Happy

              Re: Not

              S4qFBxkFFg - the short delay wouldn't negate the "same time" point of the licence requirements. I recall that the full explanation is that if the programme is still being broadcast, then watching it, even if you were watching it from a different point, counts as watching at the "same time".

          2. UMTS =(

            Re: Not

            Sorry missed out the "live" but my point still stands.. But yes you could just tell them to jog on

    2. Test Man
      Stop

      Re: Not

      @JohnMurray - To be fair, SCART had been around for yeeeears already before then and completely avoided that problem entirely, although it wasn't massively widespread.

    3. Anonymous Coward
      Anonymous Coward

      Re: Not

      * minuscule

  9. Andrew James

    I'd quite happily go tv-free if it meant getting a good 4G signal everywhere (that didnt cost a ridiculous amount). My wife and kids on the other hand probably wouldnt.

    I dont think i could bare my house if the tv suddenly stopped receiving a signal.

    1. Big_Ted
      Angel

      I watch about 1-2 hours live telly a week, and thats the news in the morning, everything else is streamed from iplayer etc plus eurosport player, netflix blah blah blah

      Wouldn't be a big loss to me........

    2. Test Man
      Stop

      If you're in a region that doesn't broadcast in the transmission groups C/D and E (like the London region), then I wouldn't worry about it at all - none of the muxes are anywhere near the UHF channels 60+ that would potentially be affected by 4G.

      1. Mike Dimmick
        FAIL

        Some relays in London do

        The main Crystal Palace transmitter may use only Group A, but many people in the London region use relay transmitters that *will* be affected. The Reigate transmitter, which carries all services, uses UHF channel 60.

        Channels from 61 to 68 are being cleared by switchover or, where switchover happened before the decision to clear 61 and 62, or international agreement wasn't obtained in time, through a subsequent clearance programme. The problem is that to make it worth auctioning this band, there cannot be sufficient separation between the lowest frequency used for 4G and TV services on UHF 60.

        Part of the problem is that people in the London area have replaced perfectly good Group A aerials with widebands, which are *designed* to pick up C61-C68, and in fact have far more gain up that end than at the low end where it's really needed. Having said that, grouped aerials still have some frequency response outside their group, it's just not designed for good gain across the whole band and one grouped aerial will have different response from another. Filters are still necessary to ensure that the pick-up of 4G signals is low enough to avoid overloading amplifiers - including the amplifiers within the receiver's tuner front-end.

  10. Test Man
    Go

    Pfff

    From what I remember, the 4G signals will be deployed at a similar frequency to UHF channel 60 and above. So this will likely affect any region that uses transmission group C/D and E, as they cover UHF channels up to UHF channel 68.

    Fortunately, the London region use UHF channels 22-30 (transmission group A) so we won't be affected. :p

  11. Chris Fox
    Facepalm

    What was the point, again?

    TV viewers, and secondary users, were obliged to pay to cope with the delights of the digital switch-over largely to free up spectrum that the government could sell off, but after all that they may still face the prospect of interference? Some people are not going to be very happy.

    If the base-stations can avoid causing interference by having better filters, doesn't that suggest that without such filters they are causing avoidable interference? I thought there were rules about that. Are we to assume that Ofcom is once again incapable of applying them when they conflict with commercial interests?

  12. Anonymous C0ward

    Why do we have radio licensing authorities

    if they are considering allowing this sort of thing? Just because you've got a driving license doesn't mean you're allowed to drive up the wrong side of the road.

  13. Anonymous Coward
    Anonymous Coward

    The EE solution

    We break it, but if you pay us some public money, we'll fix it. Maybe.

    The spirit of Don Corleone lives on.

  14. Craigo
    Joke

    Not a problem

    To be honest, by the time we've had the spectrum auction, the telco's will have spent all their money on licensing the frequencies so wont be able to deploy 4G let alone maintain it, 2G and 3G all together.

    Joke icon as hey, it hasn't happened before eh?

  15. mhoulden
    WTF?

    Couldn't they just use a different frequency for LTE?

    Incidentally, wasn't Voice of the Listener and Viewer the old name for Mary Whitehouse's gang?

    1. TseTT
      Facepalm

      As far as i can remember , The MW gang was going to be called,

      "Clean Up National Television."

      Until its acronym was spotted!.............

      1. Anonymous Coward
        Anonymous Coward

        Clean Up National Television

        They'd have started with the Grampian region, which was originally going to be called Scottish Highlands and Islands Television. Would have made a great DOG...

        1. mhoulden
          Holmes

          Re: Clean Up National Television

          Strangely enough, when I posted earlier I was wondering what Mary would have made of 2 Girls One Cup.

  16. Pypes
    Terminator

    DIY filter kits...

    Because average Jo office worker is going to have no trouble what so ever terminating coax.

  17. Alan Brown Silver badge

    Oh FFS

    Just give people in the affected areas satellite dishes and freesat decoders.

    1. Daniel Evans

      Re: Oh FFS

      Which works great, until you find a house where you can't get decent satellite coverage - the rather large hill to the south of my home (and the other 34 houses on the road) would make it pretty difficult for me to see any geostationary satellite without a rather large tower for the antenna. Oddly enough, I don't believe that the council would be too happy with someone attempting to stick up 20m poles with antennae on top in a conservation area...

  18. Andrew Jones 2
    FAIL

    Lovely - and in the Borders we do indeed receive our Freeview in the UHF60+ band.....

    And don't bother suggesting palming me off with Freesat - I want access to the channels I currently receive - I don't care how I get them - providing all the TV's in the house can get them - and I can receive them in all weather types. But please note if you intend to change the platform I currently receive all my TV with - you WILL also have to replace my PVR with one that both works on the new platform and also has the same functionality as my current PVR - Namely - I can record 2 channels at once and watch a third that is broadcast on one of the 2 multiplexes being recorded. It must continuously record a 2 hour buffer of the channel currently being watched - as we find that useful when we switch the TV on and discover that an interesting programme is just ending so we rewind it back to watch it from the beginning (or rewind it back to the start and hit record - yes the Humax PVR9200T allows you to retrospectively record TV that has already been broadcast)

    I refuse to give up any of the functionality of my existing kit just so some poncy network can introduce a technology that no-one needs, there will be no kit to use it for at least 6 months after the launch, and that will have such expensive bandwidth and stupidly low data caps - that no working class people will be able to afford to use it.

    Freesat DOES NOT carry the same channels that Freeview does - I know - I've tried it.

    1. xyz
      Unhappy

      I'm also in the borders and it's pretty gauling that post "having to buy your own analogue hilltop mast" in order to get a picture or hitch your ass to FreeSat from Sky or "real" FreeSat, we're about to get shafted just when we managed to get a 21st century picture.

      The government is a bunch of c**** and whenever you see anything with a percentage of losers about to take a hit for the "common good" you can bet it's Scotland (again) who's going to take one up the pipe, so who gives a stuff.

  19. JeevesMkII

    Wait, What?

    I don't believe there's such thing as "a pressure group campaigning for high-quality broadcasting."

    I believe what you meant to write was "an industry lobbying group astroturfing as a campaign for high-quality broadcasting."

    1. TheMidnighToker
      Meh

      Re: Wait, What?

      I like to believe someone out there is desperately campaigning against the swill of repeats and general low brow-and sensationalist "educational" programming that permeate the airwav---

      Sorry, my mistake; we're talking about the broadcast medium.

  20. Talset
    Thumb Up

    No problem for me.

    I'd say 90% of my tv viewing is online, and the other 10% is on a cable box for the freeview channels, so bring on the 4g.

  21. zaax

    I never understood why we (the UK) spent a fortune moving to terrestrial digital anyway. We should have used the money to give everyone either cable or satellite.

  22. Keith 17
    Go

    All the extra channels are crap

    Freeview is rubbish, freesat is rubbish, apart from football sky is rubbish. Too many channels competing for the same advertisers so no-one has the cash to actually produce quality original programmes.

    Bring on 4G and go back to five channels on analogue, they'll get a decent budget and we might actually get some tv worth watching again.

    Problem solved. Thanks for the applause. I'll waive the fee.

    1. Lamont Cranston

      Re: All the extra channels are crap

      I'm tempted to agree with this, but then I'd not have 5USA, and so be unable to fall back on guaranteed repeats of CSI, when there's nothing else on.

      Maybe we could replace BBC1 and ITV with endless CSI and films where stuff blows up? That'd keep me happy.

      1. electricmonk
        Go

        Re: All the extra channels are crap

        Just so long as I can have ITV4 for the three weeks of the year that it's showing the Tour de France. (Haven't a clue what it shows the rest of the time)

  23. Iain Leadley
    FAIL

    4G? Whats that

    Where I live its just GSM, how about they actually get everyone onto 3G first?

    As broadband rate increase we don't get anything other than fatter webpages so whats the point anyway.

  24. ForthIsNotDead Silver badge
    Meh

    And?

    Does anybody actually watch TV these days? Would anyone notice?

  25. Anonymous Coward
    Anonymous Coward

    How about

    Forgetting terrestrial and just use freesat instead, just a box, dish and LNB, no amplifiers required and importantly small room for cowboys to make money unless they try and hoodwink you into taking a multiswitch if you need to use a PVR in mre than one room.

    TIP: its cheaper to get multiple dishes

    1. Phil O'Sophical Silver badge
      WTF?

      multiple dishes

      You can get 8-output LNBs these days, how many PVRs have you got?

  26. Anonymous Coward
    Anonymous Coward

    Why not just use 700Mhz

    and pander to those iPad3's that can't use 4G...

  27. David Cantrell
    Thumb Up

    Anything to wean people off the TV teat is a good thing.

  28. Anonymous Coward
    Anonymous Coward

    ... and the US government whinge about Lightsquared potentially interfering with some old GPS receivers (chosen by the GPS manufacturers) that are picking up frequencies they should not....

  29. Anonymous Coward
    Anonymous Coward

    The quicker we move to on demand and IPTV the better... perhaps the government should decree all new TVs have to be IPTV compatible so at least you only have to wait around 5-10 years for the current installed base to die / be replaced.

  30. Andrew 63
    Facepalm

    Moan moan moan... but have they tested this?

    How do they know its going to knock out freeview? Its digital technology like freeview is, and therefore should be minimal leakage across mhz like there is with analogue....

    Once again people kicking off without testing shizzle.

    1. Andrew 63
      FAIL

      Re: Moan moan moan... but have they tested this?

      *minimal leakage compared to Analogue...

      I can't type.

      1. Anonymous Coward
        Anonymous Coward

        Re: I can't type

        Yes, where's the ROTFLMAO icon when you need it?

    2. Test Man
      FAIL

      Re: Moan moan moan... but have they tested this?

      *facepalm* Somehow I think the people who actually design and produce devices, as well as the people who allocate the spectrum know a bit more than you do, "Andrew 63".

      It being digital tech doesn't mean it's impervious to interference. You still have to keep competing unrelated signals at a distance, or there'll be interference - and with "digital" signals, the result can be worse.

      Digital terrestrial television is transmitted in the same way as analogue and every other transmission kit - over electromagnetic waves.

      Analogue and digital is transmitted in the 470-862MHz range, which is split into UHF channels. 4G for the UK is being proposed to use the 800MHz range, which is the same range as what some digital muxes are already being transmitted at in some parts of the country (UHF channel 60+).

      Therefore, there'll likely be interference which won't merely produce snow (with analogue), but knock the relevant muxes out entirely (as digital means if the kit can't correct the errors, it fails completely). It might be worse with equipment that is "wideband" (i.e. designed to accept signal from the entire UHF range for TV), as this interference at the top end of the UHF channel range might affect the equipment's ability to receive anything over the UHF range.

  31. Snar
    Thumb Down

    Ofcom are not fit for purpose

    First we have PLT's knocking out Short Wave and VHF, and now this retarded use of spectrum.

    I find it quite funny, really

    ,,,-.-

  32. M7S

    Alternative solution.

    Whilst I am personally a fan of broadcast TV as a relatively resilient system, and shudder at the thought of losing analogue radio in the future as well as TV, with all the various costs that need to be spent here there and everywhere to fix the problems arising, would it not be better to simply put all these monies into one big pot and use it to roll out FTTH to the entire country with a universal service obligation that would cover "landline" telephony, non-subscription TV, internet etc

    That way more radio frequencies could be freed up for mobile services, although I'd personally want to have a backup of broadcast public media for when the local power supply (and therefore switches) stops for any reason.

    It just seems that it could be a bit better in the long run and there might be side benefits if it was done as a national infrastructure investment. One proviso would that our definition of "super fast broadband" would need to be altered to match that of say South Korea, and no sodding contention ratio issues either.

    1. Test Man
      Stop

      Re: Alternative solution.

      Problem with that is that it'd cost a fantastically high amount of money just to get something like that set up, let alone run, as well as take a very long time to complete. Who is going to be the one who would want a "universal service obligation" imposed on them? BT? Virgin Media? Yes they're already rolling out fibre but look how long that is taking, as well as the fact that they can't (or won't) roll it out to areas that are completely uneconomical to do so. Even someone like Virgin Media, who has a national cable network, doesn't cover a lot of the country, so would you force them to do it?

      And where is this mythical money supposed to come from anyway?

      As it is now, we already have a national terrestrial TV setup in existence (that covers virtually all the country), so from a business point of view, it doesn't make sense and it's far far easier to deal with some interference with a relatively small amount of people than build a whole new system for delivering broadcast TV from scratch, which will cost so so so much more. Yes, it probably sucks but this is the reality.

      In these "credit crunch" times, it's a complete non-starter.

  33. Matthew 17

    How would you notice if Freeview was worse?

    Never been able to get a stable picture on it.

    1. Phil O'Sophical Silver badge
      Coat

      Re: stable picture

      http://tinyurl.com/ccz88gs

  34. Purlieu

    Same time

    Indeed, towards the end of the Man U - Man City match the other day, which became time-critical at the end, the commentator actually mentioned on air that satellite viewers would be up to 10 seconds behind terrestrial (and not just because of the distance before some clever arse chips in) so given that, you are actually not watching in real time.

  35. the-it-slayer
    Alert

    Can 4G block Simon Cowell?

    Yes please! This man needs to stop producing guff for the millions of bored/senseless people who don't have anything better to do than laugh at talentless idiots. Effectively promoting mocking/bullying on people who are too gullible to sign up for these shows and then get spun round by the Cowell mob. Lure 'em in and then chuck 'em out reality TV.

    Bring back classics like Crystal Maze, The Generation Game, Gladiators (I know Sky pissed up the last attempt to bring it back), Fort Boyard etc.

  36. Dave_L

    Base station filters

    Can someone explain what these are please

  37. Frank Butcher
    Mushroom

    Be careful

    Please. won't anyone think of the Badgers ...

  38. Mark Uhde
    Stop

    Freeview...

    The UK has fantastic DTT. I live in the United States, here it's a mess. Of course, the problem is you guys have to pay for your DTT ("TV License") whether you use it or not. That's why it's so good. You have a nationwide network of coordinated translator stations that operate a centrally managed digital network that is as seamless to the user as any cable or satellite service (to compare - in the US we use ATSC, not DVB-T. ATSC has better line of sight range, but isn't nearly as resistant to multipath which tends to be a bigger issue. Every station has their own license, and can use their 6MHz channel as they please as long as it's ATSC. Every market therefore has different offerings, but I know of none as good as Freeview). This is NOT the major issue it's made out to be, and the DVB-T system is very resilient. It's simply a matter of filtering out-of-band signals from going into amplifiers designed for the whole original TV spectrum, which could overwhelm broadband amplifiers and/or the amplified signal could bleed into the DTT band. I say COULD, because to be realistic, it's not that different from the US where we have many stations coming from many places. Amplifiers to pick up distant stations rarely fail due to stronger TV stations (MUCH stronger) that are closer. It can be an issue, but, eh, not often, even when stations are close. We hear the same theoretical risk as we're re-farming TV spectrum too, and some areas have a station right up against the new 4G spectrum. So far, very very few issues - even in the areas identified as most likely to have problems. The lowest part of our new 4G/old TV band isn't widely deployed yet, but despite the cries, it's been a non-issue where it has. Worst case scenario, some people need some low-pass filters on the input to their TV or amplifier, and life's good again :D

This topic is closed for new posts.

Biting the hand that feeds IT © 1998–2020