string(8) "SJ95_41_" string(8) "SJ95_41_" Using UHF channels C61 to C69? Time to retune | UK Free TV 🔒
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Using UHF channels C61 to C69? Time to retune

As from today, the whole of the "800MHz" band belongs to Three, EE, Vodafone and O2. If you are not a giant telecoms company, and are using still them for anything, now is probably a good time to stop.

As from today, the whole of the  800MHz  band belongs to Three,
published on UK Free TV

Since 1964, the UHF band (channel 21 to channel 68) has been used exclusively for television services.

The main use, of course, has been over-the-air signals to bring five analogue (and latterly lots of extra digital) TV channels, but a secondary use has been for what is called "RF modulation".

In the days before SCART cables, and long before the not ubiquitous HDMI connections, if you wanted to get a signal from a device such as a video recorder, a games console, home computer or a satellite decoder to a TV set, the only option was to "modulate" it.



If you are still using a device with an RF modulator, you need to check that the channel allocated is not in the C61-C69 range. If it is, then you need to change it for two reasons: to stop an "illegal broadcast" interfering with 4G devices, and to stop 4G transmissions interrupting your video.



Who owns the 800MHz band? It's not you.

The most common devices are Sky Digital boxes produced from October 1998 to about 2010. See How do I change the RF output channel on a Sky Digibox? .



Please don't forget you will need to retune your TV as well as the RF modulator!

If you want to know the best channel to use, enter your postcode into "site settings" box, and see the text that appears there, as shown in this example:



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Comments
Tuesday, 19 July 2016
A
Andy
6:06 PM Milton Keynes

Hi, my postcode is MK3 5HF, how do I find the best Sky RF out channel? Many thanks!

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Andy's 1 post GB
Andy's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
R
Richard Cooper
6:43 PM Norwich

Andy: Try UHF RF channel 36 because that channel is not used by your main Sandy Heath transmitter in Bedfordshire. Richard, Norwich.

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Richard Cooper's 424 posts Gold Gold GB
Richard's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
Friday, 19 August 2016
A
Andrew
10:44 AM

Hi

What is the UHF or how do I find best channel for analogue sky please? LU6 1FD...

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Andrew's 1 post GB
J
jb38
12:43 PM

Andrew: Channel 38 can be used virtually anywhere in the UK for the analogue RF output on Sky boxes.

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jb38's 7,137 posts Platinum Platinum GB
Monday, 19 September 2016
N
Neil H
11:16 AM

I live in ST11 postcode area and have recently started to get interference on bedroom & dining room TV's thro' Sky Magic eye. RF is set to 68 which now appears to be used by 02. Which would be the best RF output channel to use in my area.

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Neil H's 3 posts GB
Neil's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
S
StevensOnln1
11:46 AM

Neil H: As per jb38's post above yours try C38. Don't forget you'll need to retune the TVs which are receiving the analogue RF output once you've changed the channel.

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StevensOnln1's 139 posts Silver Silver GB
R
Richard Cooper
12:02 PM

Neil H: Hi, Neil. Channel 38 ought to be OK. Don't use 35, or anything from 39 to 46, because these are all used by Sutton Coldfield to transmit tv signals to houses. Also, don't use anything in the range 21 to 27, because these channels are used by the Fenton (near Stoke) tv relay transmitter. Don't use the upper 40s or mid-50s as these are used by Waltham in the East Midlands.Other possible channels you could try are 29 and 30, but NOT 31 or 37, also used by Waltham. Anything at 59 or over can be used by 4G mobile phone services. Richard, Norwich.

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Richard Cooper's 424 posts Gold Gold GB
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