Expecting 4G interference? Tests now show that you have a one in 300 chance
Looking back the the original posting, Ofcom moves to protect Freeview interference from 4G mobile, we can see the Ofcom suggested that:
Of the 16.3 million UK homes with a standard (unamplified, unshared) Freeview reception, 110,000 (0.67%) would be effected.
Of the 5.2 million homes using communal aerials systems, 550,000 (10.6%) will have problems.
Of the 5.6 million homes using amplified Freeview reception, 100,000 (1.8%) will experience problems.
Today, at800 have published the results of the tests in London, Brighton and Hove and York - at800 updates estimate of likely impact of 4G at 800 MHz on Freeview:
"Following tests conducted across the country, at800, the organisation responsible for protecting Freeview when 4G at 800 MHz is rolled out across the UK, has provided a new estimate of the likely scale of the impact. If national rollout reflects the results seen during its tests, at800 expects no more than 90,000 households, with Freeview as their primary TV service, to experience disruption caused by 4G at 800 MHz. Whatever the level of disruption, at800 is ready to restore Freeview to viewers.
at800 has now sent postcards to households in London and the surrounding areas in preparation for the activation of 4G at 800 MHz masts over the coming weeks and months. at800 is also sending postcards to other areas of the UK ahead of masts switching on. at800âs mailing does not mean that 4G services will be available to consumers. For information about the availability of 4G services, people should contact their mobile operators.
In London, in particular, Freeview received from the Crystal Palace transmitter is unlikely to be affected by mast activation because of the strong terrestrial television signal and its relatively large frequency separation from 4G at 800 MHz. However, at800 is sending postcards and running a publicity campaign to ensure anyone who does experience new disruption to their Freeview service knows how to get in touch."
So with 26.50 million TV households in the UK (see Monthly universe summary - BARB) 90,000 represents 0.340% of them - that's a ONE IN THREE HUNDRED chance.
It seems that you are most likely to need a filter if:
a) you are a long way from a high power Freeview transmitter; and
b) you are very close to a 4G mobile phone mast; and
c) you are using a booster.
That's good news for Freeview viewers.
If you have had a postcode from at800 - see Received a postcard from at800?
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Gweneh: Sorry for the delay in replying to your update on the outcome of the aerial installers visit, but pleased to see that your problem has been rectified.
I found your report on the standard of reception from Tacolneston interesting, and especially when compared to that given on Digital UK's trade predictor, this proving "once again" that RF signal prediction when of a non-satellite nature is very hit and miss affair to the extent that anything seen cannot be relied upon as even remotely representing fact.
By the way, Aldeburgh is one of the higher powered relay stations radiating on 10Kw, this being most likely why you can receive it so well even although your aerial is misaligned in both polarity and direction, and of course grouping albeit that the latter plays a somewhat lesser role.
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colin: Your problem is possibly connected with the engineering work currently being carried out at the Belmont transmitter, as a "liable to interruption" notice was posted on the engineering notice board as starting from Monday 21st.
That said, it would still be advisable to double check on this by making an enquiry with a neighbour to find out if they are being similarly affected.
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We went to Freeview just before digital switchover and we have been having problems ever since. We have two TVs and we have had boosters installed and de-installed by our aerial supplier who has tried all sorts of things. The signal is strong but intermittently it drops out to no signal, the TV freezes or we get interference and this can last for seconds at a time. Sometimes we have given up watching a programme because it is happening so frequently. We are really fed up about this. We use to have cable but can no longer afford it and now we appear to be stuck with this. Both TV's in our house react the same at the same time.
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