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Full Freeview on the Oxford (Oxfordshire, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.790,-1.179 or 51°47'25"N 1°10'46"Wsa_postcodeOX3 9SS


The symbol shows the location of the Oxford (Oxfordshire, England) transmitter which serves 410,000 homes. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.

Are there any planned engineering works or unexpected transmitter faults on the Oxford (Oxfordshire, England) mast?

Oxford transmitter - Oxford transmitter: Possible effect on TV reception week commencing 04/12/2023 Pixelation or flickering on some or all channels Digital tick

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

Which Freeview channels does the Oxford transmitter broadcast?

If you have any kind of Freeview fault, follow this Freeview reset procedure first.

Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.

 H max
C41+ (634.2MHz)295mDTG-100,000W
Channel icons
1 BBC One (SD) South (Oxford), 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 17 others

 H max
C44- (657.8MHz)295mDTG-100,000W
Channel icons
3 ITV 1 (SD) (Meridian/Central (Thames Valley micro region)), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Central west),

 H max
C47 (682.0MHz)295mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD South (Oxford), 102 BBC Two HD England, 103 ITV 1 HD (ITV Central West), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H -3dB
C29 (538.0MHz)295mDTG-850,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 35 others

 H -3dB
C37- (601.8MHz)319mDTG-850,000W
Channel icons
 Smithsonian Channel, 11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's Christmas, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H -3dB
C31 (554.0MHz)319mDTG-850,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 235 Al Jazeera Eng, plus 20 others

 H -10dB
C46 (674.0MHz)295mDTG-1210,000W
Channel icons
from 22nd December 2014: 7 That's Oxford,

DTG-8 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)

Which BBC and ITV regional news can I watch from the Oxford transmitter?

regional news image
BBC South (Oxford) Today 0.4m homes 1.6%
from Oxford OX2 7DW, 6km west-southwest (258°)
to BBC South (Oxford) region - 6 masts.
BBC South (Oxford) Today shares 50% content with Southampton service
regional news image
ITV Meridian News 0.9m homes 3.4%
from Whiteley PO15 7AD, 102km south (182°)
to ITV Meridian/Central (Thames Valley) region - 15 masts.
Thames Valley opt-out from Meridian (South). All of lunch, weekend and 50% evening news is shared with all of Meridian+Oxford

How will the Oxford (Oxfordshire, England) transmission frequencies change over time?

1950s-80s1984-971997-981998-20112011-132013-182013-1723 May 2018
C50tv_off SDNSDN

tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 14 Sep 11 and 28 Sep 11.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 500kW
BBCA, D3+4, BBCB(-7dB) 100kW
SDN, ARQA, ARQB(-10dB) 50kW
Analogue 5(-11dB) 40kW
com8(-14.7dB) 17.1kW
com7(-14.8dB) 16.4kW
Mux 1*, Mux 2*, LOX(-17dB) 10kW
Mux C*, Mux D*(-18dB) 8kW
Mux A*, Mux B*(-19.2dB) 6kW

Which companies have run the Channel 3 services in the Oxford transmitter area

Feb 1956-Jul 1968Associated TeleVision†
Feb 1956-Jul 1968Associated British Corporation◊
Jul 1968-Dec 1981Associated TeleVision
Jan 1982-Dec 2006Central Independent Television
Dec 2006-Feb 2009ITV Thames Valley
Feb 2009-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Oxford was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Wednesday, 4 January 2012
8:15 PM

thanks Dave
It isnt variable and turning of the power to it gives us nothing, do you suggest getting a variable booster

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nicola's 8 posts GB flag
Dave Lindsay

8:33 PM

nicola: At about four miles from the transmitter, there is quite a possibility that you could remove the power booster and replace it with a non-powered splitter.

If you still have issues with reception (like you have now) then you might need an attenuator as well.

If I were you, I'd try disconnecting booster and connecting the incoming aerial lead to one of the feeds to one of the Freeview boxes. Then try the same with the other box and see what you get.

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Dave Lindsay's 5,724 posts GB flag
Thursday, 12 January 2012
2:13 PM

Hi Dave,

Both TVs are running of a splitter now and recieving good-very good signal. I managed to get both boxes record the same programme to check that having both on wasnt causing problems. That checked out ok but after an hour of watching and recording my box suddenly stated no signal when trying a channel, but signal details hadnt changed.
I reset the box completely and rescanned several times before getting everything back.
Watching seems ok but when recording anything I get constant skipping again, it seems to be bbc one mainly, Is it worth trying an attenuator for my box, would you suggest a variable one or a specific db

Its great that you are helping

link to this comment
nicola's 8 posts GB flag
Dave Lindsay

3:28 PM

nicola: I would get a variable attenuator, such as that which is shown on the other page entitled "Freeview signals: too much of a good thing...". These usually give you a range up to 20dB.

Put variable attenuator into eBay and some will come up.

I would try putting it on the feed into one of the boxes. If 60 or 70% strength gives 100% quality, then I would try it at that.

If it works, then you might try putting the attenuator before the splitter and adjusting so that both devices work.

link to this comment
Dave Lindsay's 5,724 posts GB flag
Dave Lindsay

3:34 PM

nicola: Watch out because some of the attenuators have F-connectors (which are the threaded and therefore need screwing together) and some have the coax connectors on (the sort you just plug in as found on the back of TVs and recorders).

The most commonly encountered type of connector used for terrestrial aerials are the plug in coax ones, so you probably want one of these. For example:

TV Aerial Attenuator Variable 0-20Db Freeview Digital | eBay

eBay - The UK's Online Marketplace

link to this comment
Dave Lindsay's 5,724 posts GB flag
Saturday, 14 January 2012
7:53 AM

Hi Dave here is an update, I have been running both boxes on the splitter and have come across a few things, Both boxes get a blank screen when going onto really, and itv2+1 Prob others too. both boxes are skipping when recording.
my box states signal quality good, signal level around 70% so I am worried that I need to boost this rather than use an attenuater to dampen.

link to this comment
nicola's 8 posts GB flag
Monday, 16 January 2012
Dave Lindsay

10:13 AM

nicola: Be aware that the three commercial (COM) multiplexes are currently on much lower power from Oxford than its Public Service Broadcaster (PSB) ones.

Thus, you will have to ensure that you attenuate enough to make the PSBs watchable without attenuating the COMs too much so as to make them too weak for your machine to show a picture.

On 18th April the COMs will go to their full final power, which will be lower than that of the PSBs (which are already at their full final power). So it is to be expected that there is a difference in signal strength.

The scale on different boxes will differ, so ultimately it is try it and see. As an example, my Sony recorder (HXD-RDR870) gave strengths of around 50 to 60% before switchover and it worked fine. The quality was 100% and therefore the picture wasn't degraded.

If the 70% is on BBC or ITV1/C4 and ITV2+1, Really is breaking up or gone, then you need to reduce your attenuation to let some more of the signals through.

For a full list of Freeview services and what multiplex they are carried on, see here:

DTG :: DTT Services by Multiplex

Basically, I would look at the first service in each multiplex. So check BBC One, ITV1, BBC One HD (if applicable), ITV3, Pick TV and Yesterday. As I say, the trick will be not to attenuate too much so as to loose the last three, but enough to reduce the level of the first three enough.

Come 18th April this will be easier because the COMs won't be so weak with respect to the PSBs.

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Dave Lindsay's 5,724 posts GB flag
5:03 PM

Hello again,

I just checked the channels that you suggested and I dont get ITV3 and PickTV at all despite them showing up on the program guide.This is without a booster or attenuator connected, would an antenuator not make this worse rather than better and would a variable booster be better until the signal strength of the transmitter is at full power again.

link to this comment
nicola's 8 posts GB flag
David Pinfold

7:36 PM

Nicola - where you are located you should not have any problems receiving any of the channels, even with the power restrictions on the commercial multiplexes. You should easily be able to passively split the signal to 2 receivers. Either there is too much signal (likely if you have a roof mounted aerial) or you have fault (Bad connection, short circuit in the aerial cable etc). My advice would be to have it checked by a profeesional aerial rigger.

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David Pinfold's 42 posts GB flag
David's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Tuesday, 17 January 2012
Dave Lindsay

5:48 PM

nicola: It is a possibility that the reason your receiver isn't picking up two of the (weaker) COMs is because the strong PSBs is desensitising your receiver.

That is, it is less sensitive to the weaker COMs because it is reacting to the strong PSBs.

Change to ITV3 and bring up the signal strength meter. Now connect the attenuator into the aerial lead and turn it and see what happens. Get an idea of where the strength is at its highest. See if adding attenuation actually increases it.

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Dave Lindsay's 5,724 posts GB flag
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