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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 25/03/2024 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-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

PSB2
D3+4
 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),

PSB3
BBCB
 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

COM4
SDN
 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, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

COM5
ArqA
 H -3dB
C37- (601.8MHz)319mDTG-850,000W
Channel icons
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 TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

COM6
ArqB
 H -3dB
C31 (554.0MHz)319mDTG-850,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

LOX
 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
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
Sunday, 19 January 2014
R
rob
sentiment_satisfiedBronze

8:56 AM
Kidlington

Hi again,
will try the neighbors first, but could be tetra then as the interference only affects the channels 60 programmes then?

lets hope its the neighbors!

thanks again
Rob

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rob's 25 posts GB flag
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P
pikpilot
sentiment_satisfiedBronze

12:57 PM

As moving the tv or changing lead length makes so much difference and as you are relatively close to the transmitter, don't rule out the possibility that there is a break in the coax lead from the aerial to the set. The signal you are getting may be just the coax acting as the aerial, thus giving differences in signal strength as you change coax length and position. A break will also give you different effects on each frequency as it will not be a 75 Ohm match

It is very easy to test with a multimeter. At the aerial end, join the inner and outer of the coax and then at the set end use a multimeter (or even a battery and torch bulb) to check for continuity between the inner and outer of the coax.

I have seen this before and the lack of a shield on the wire (in effect) also produces resonance at strange frequencies. Check continuity also at your spurs to other sets as a break in their coax will act as another input on a different (interfering) frequency.

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pikpilot's 23 posts GB flag
R
rob
sentiment_satisfiedBronze

1:17 PM
Kidlington

If it was a break in the coax would i not be getting the interference on all the channels? I am only experiencing issues off channel 60 mux. No other channels are an issue not one.
really find this frequency stuff confusing, thanks for all the help.

Rob

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N
nickwilcock
sentiment_satisfiedBronze

7:58 PM

Were any taxis operating in the vicinity? Or police vehicles? Both used to upset my TV reception if they used their radios nearby.

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nickwilcock's 24 posts GB flag
R
rob
sentiment_satisfiedBronze

8:30 PM
Kidlington

I live near Thames valley headquarters in kidlington and near the police station too. However never been an issue before and lived here 12 years now.

regards
Rob.

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P
pikpilot
sentiment_satisfiedBronze

11:07 PM

A break in the coax means you have an unterminated length of wire that is resonant at a frequency that is set by its length and the velocity factor of the wire. This can enhance or nullify signals at one frequency. Worth a check as it is simple to do.

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pikpilot's 23 posts GB flag
Monday, 20 January 2014
Transmitter engineering
sentiment_very_satisfiedOwner

10:23 AM

OXFORD transmitter - Over the next week Oxford main transmitter: TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 149,799 posts xx flag
R
rob
sentiment_satisfiedBronze

10:40 AM
Kidlington

Hi All,
Could this be the problem, strange how there are now works on the mast. Does anyone know the detail of the works, are they relating to channel 60 issues?

Regards
Rob

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rob's 63 posts EU flag
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R
rob
sentiment_satisfiedBronze

5:30 PM
Kidlington

Right, neighbors are yet to get back to me on anything the other side of the wall. I have borrowed a SLX dvb-t signal meter, lights up 80 top figure on the device, after the splitter 60 at socket down stairs. 50 at back of tv, still the same issue with everything on channel 60 having intermittent blocky picture and sound clipping, not all the time just hiccups at random times but can be every 20 seconds or wait 2-3 mins and starts again.

again thanks for the help all.


Rob

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R
rob
sentiment_satisfiedBronze

10:16 PM
Kidlington

Well hi all again, my neighbors still have not got back to me so tried a borrowed set top box and placed it on top of my hard drive recorder and not a blip all night, could this still mean its interference on the Sony tv or is the tuner on the blink?
again any advice would be appreciated.
Regards
Rob

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