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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 26/09/2022 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
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C41+ (634.2MHz)295mDTG-3100,000W
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, 250 BBC Red Button, plus 16 others

PSB2
D3+4
 H max
C44- (657.8MHz)295mDTG-3100,000W
Channel icons
3 ITV (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, 30 E4 +1, 35 ITV +1 (Central west),

PSB3
BBCB
 H max
C47 (682.0MHz)295mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV Central West), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -3dB
C29 (538.0MHz)295mDTG-850,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H -3dB
C37- (601.8MHz)319mDTG-850,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 H -3dB
C31 (554.0MHz)319mDTG-850,000W
Channel icons
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Aljazeera English, plus 19 others

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

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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 (183°)
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
VHFC/D EC/D EC/D EC/D EC/D E TW TW T
C2BBCtvwaves
C29SDN
C31com7com7
C37com8com8
C41BBCA
C44D3+4
C46_local
C47BBCB
C49tv_offC5wavesC5waves
C50tv_off SDNSDN
C51tv_offLOXLOX
C53tv_offC4wavesC4wavesC4waves+BBCA+BBCA+BBCA
C55tv_offArqBArqBArqBcom7tv_off
C56tv_offCOM8tv_off
C57tv_offBBC1wavesBBC1wavesBBC1wavesBBCBBBCBBBCB
C59tv_off-ArqA-ArqA-ArqA
C60tv_offITVwavesITVwavesITVwaves-D3+4-D3+4-D3+4
C62SDN
C63BBC2wavesBBC2wavesBBC2waves

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.

Comments
Tuesday, 9 August 2011
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

1:58 PM

Gaetan: It appears that the radiation pattern of the new main antenna at the Oxford transmitter is a bit different from the old one, and this could have had an effect on your reception. I believe it is actually more circular than before, and also the old aerial did not actually allow the ERP of 500kW to be reached, which means you could well be getting more signal than originally intended.

If you're using a booster, remove it. If not, try adding an attenuator. If neither of these helps, complain to the property management company - the Master Antenna TV system should be adjusted so that levels on all channels (analogue and each digital multiplex) are within acceptable ranges at each socket provided.

Do other residents in the building have the same problem? If so, that would definitely point to a problem with the system. Do ensure that you keep your mobile phone well away from any TV aerial cables, whether visible or likely locations for them to be buried in the walls, because GSM phone frequencies are very close to the top of the TV band, where Mux 2 lives.

The management company should definitely be arranging for the system to be adjusted on 14 and 28 September, as the levels required for BBC A are going to be quite different from those for Channel 4 analogue (which the high-power BBC A multiplex replaces on C53), and the commercial multiplexes will use frequencies never before used at Oxford.

If the system is not adjusted you may well end up with too much signal after switchover, and/or be unable to get the commercial multiplexes at all, depending on how the MATV system is constructed.

For general advice on communal TV systems, see PARAS - Professional Aerial Riggers Against The Sharks .

The actual prediction at your location is for 99-100% probability of reliable reception, on all multiplexes, both now and after switchover, so unless there are issues not covered by the predictor - trees or large buildings nearby - there is some problem with the system. There are a few large trees there, but it should have been possible to site the aerial somewhere that they wouldn't block the path to the transmitter.

link to this comment
Mike Dimmick's 2,486 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

2:09 PM

R.Strawson: I would strongly advise against getting an aerial from a high-street retailer or DIY store. They don't know what they're selling. The MZ40T is a 'contract' type: these tend to have very uneven response across the band - the gain on one channel may be very different to that on another, giving strange results.

At your location I would go for a small log-periodic such as the DM Log or Log40 at Online TV FM DAB Aerial sales . You are in a very strong signal area and should have no trouble unless trees block line-of-sight to the transmitter.

If you have a booster, you should remove it. It's very unlikely to be doing anything useful and could easily be overloaded. You may find that you need to use attenuation even with a lower-gain aerial.

I would also check that the cables are in good condition. If they've been up for more than 10 years, replace them. Use 'satellite-grade' cable with copper-braid-over-copper-foil screening, such as Webro type WF100. Ensure that you clip down the cable as it passes over brickwork and tiles - see Satellite, Television, FM, DAB, Aerial, Coaxial Cable, Plugs, Sockets, Connectors & Leads for ensuring it can't move.

Your problem could well be that water has got into the cable, which changes the cable's performance, increasing losses but increasing losses at higher frequencies to a much greater extent than lower ones. Or, the cable run could just be too long - the longer the cable, the more signal is lost, and it's worse at higher frequencies than low ones.

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Mike Dimmick's 2,486 posts GB
Saturday, 20 August 2011
Brennig Jones
9:54 PM

Things here in OX28 have been fine lately. Everything seemed to have settled down to good quality digital television.

Until tonight. ITV1 and C5 have been pixellated to buggery and the sound has been like Norman Collier on acid.

I thought digital was supposed to bring a quality improvement? This is ridiculously poor.

link to this comment
Brennig Jones's 12 posts GB
Sunday, 21 August 2011
J
JM
10:55 AM

Hi,

I live in the OX5 area (Yarnton) and was experiencing a perfect digital service up until a few months ago at which point we're now unable to receive ITV1,2,4 etc Channel 4, Film4 etc and only intermittently receive Channel 5, Fiver etc.

Any ideas what has been causing this and if we're ever likely to go back to the service we had before?

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JM's 1 post GB
Monday, 22 August 2011
Briantist
sentiment_very_satisfiedOwner

8:53 PM

Brennig Jones: You have not provided a postcode so I can't really be specific.

The digital services are not yet at full power, they will be when the analogue services are closed.

If you have the problem you describe, please see Single frequency interference | ukfree.tv - independent free digital TV advice .

link to this comment
Briantist's 38,844 posts GB
Thursday, 25 August 2011
D
David Pinfold
sentiment_satisfiedBronze

8:28 AM
Banbury

JM: In your location you are pretty much in as strong a location to receive a signal as is possible from the Oxford transmitter. ITV, CH4 & CH5 are working fine here in Banbury so it may well be that you are getting too much signal. If there is an amplifier attached remove it. You may need to fit an attenuator to reduce the signal level (maplin do a variable for £7.99). If this is the case then your problems will only increase after DSO.

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David Pinfold's 42 posts GB
Monday, 29 August 2011
M
MR
3:54 PM
Kidlington

JM:
I am in Yarnton too (OX5) Cassington Rd. Around a year ago the ITV signal was good, now it isn't.

Regarding details on this problem.
Was fine with Nokia 221T, later fine with TVOnics PVR box. Then stopped being fine, became patchy, sometimes "norman collier" sometimes nothing, occassionally fine (to lure you into watching a film).
Recently got a new TV and still rubbish. TV reports low signal (4 out of 10 on a good day). If I put the PVR in-line, then the signal drops lower (indicating to me that it isn't too much signal).

I had assumed that the problems coincided with the fire at the mask in Beckley.

My hope is that when the DSO happens that things will sort themselves out. If not I will have to investigate attenuators, aerials, and cabling.



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MR's 3 posts EU
Tuesday, 30 August 2011
M
MR
11:42 PM
Kidlington

So, couldn't help myself.

Went up to loft to tweak aerial position. Managed to improve the signal from 21dB to 24dB (according to my cheapo Philips freeview box). So ch68 is worse than any of the others but (in the evenings) the picture no longer suffers from drop-outs.

Also discovered that my DVD player (old Panasonic S35) stuffs up the signal if it is turned on.

Looking forward to DSO.

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MR's 3 posts GB
Thursday, 1 September 2011
Briantist
sentiment_very_satisfiedOwner

8:42 AM

MR: You might want to check that the DVD player doesn't have an RF modulator...

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Briantist's 38,844 posts GB
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