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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 03/10/2022 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
Wednesday, 15 January 2014
R
rob
sentiment_satisfiedBronze

10:10 PM
Kidlington

The signal is 100% with the set top, but still some interference but that could be cars, could this mean an Ariel replacement is required? Really confusing me.

link to this comment
rob's 63 posts GB
R
rob
sentiment_satisfiedBronze

10:19 PM
Kidlington

Does seem like less interference on set top Ariel. Still blipping but not as bad, still driving me mad, do i need a high pass filter?

link to this comment
rob's 63 posts GB
R
rob
sentiment_satisfiedBronze

10:39 PM
Kidlington

Update, started again with set top Ariel and really breaking up so back on main Ariel again. Might be some local interference but why only on channel 60 tv stations?

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rob's 63 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

10:46 PM

rob: I wonder if this could be due to the presence of a 4G base station operating in the 800MHz band (C61 upwards). It might be worth enquirying with at800 to see if this could be a possibility:

Contact at800 / DMSL | General Enquiries | at800

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Dave Lindsay's 5,724 posts GB
R
rob
sentiment_satisfiedBronze

11:08 PM
Kidlington

Cheers David, have checked already but they say there is nothing online in my area at the moment. Could it be from the police headquarters or a baby monitor or something as we have new neighbors with a baby, there seems to be no pattern to it, but all on channel 60 only nothing else.

link to this comment
rob's 63 posts GB
Thursday, 16 January 2014
J
jb38
sentiment_very_satisfiedPlatinum

12:08 AM

rob: If indeed your problem is being caused by some form of localised interference then its likely to be a harmonic of whatever is causing the problems fundamental operating frequency and not something actually transmitting on C60, as harmonics (especially from a transmitter device located nearby) can in many instances be just as bad, although harmonic signal interference usually falls off rapidly as you move away from the source, this being why I suggested moving the set top aerial away from the TV and also trying a test by connecting the Sony TV into your daughters aerial socket which I believe to be upstairs?

Another possible source of interference is from "some" types of broadband powerline adaptors, as they can introduce harmonics into the ring mains wiring system.

Tetra interference is another possible source, as the first harmonic from a Tetra base station (on high 395 Mhz) as used by the Police / Fire services etc is close enough to C60 to cause problems.

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jb38's 7,179 posts GB
R
rob
sentiment_satisfiedBronze

7:36 AM
Kidlington

Thanks again jb for the advice, would this not effect my daughters tv running on the same Ariel? Also how would i get rid of these types of interference? Is there anything u can do? Or do i have to go to the expense of freesat?

regards
Rob

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rob's 63 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

11:19 PM

rob: Some brands of Freeview receivers are more prone than others as far as reacting in an adverse way to any forms of localised interference that may happen to be around, and especially if the source of the interference is located nearby such as possibly from something sited on the other side of a properties separation wall, this being my reason for suggesting that if at all feasible to try the Sony TV up in your daughters bedroom, as you really do have to eliminate the possibility that the problem is associated with where the TV is presently located.

You could of course try your daughters TV on the aerial connection used by the Sony and see how it performs, but as aforementioned, interference affects some TV's more than others when operating "close" to a source of interference and so the test is more valid if the Sony is tested out using daughters aerial outlet point.

If though the problem still occurs then that could suggest that its down to a fault in the TV's tuner, because if the signal level received was totally over the top then its unlikely that your daughters TV would not be affected in some adverse way.

Another point I was wondering about being, as you are not using any form of powered splitter then what arrangement are you using to feed the aerial into the two outlet points?

Another test that I would like you to try is to carry out a signal strength / quality check on your daughters TV whist its on BBC1and making a note of the indications seen, then carrying out a similar check on the ITV1 channel followed by comparing that seen with the indications obtained from the BBC1 mux.

If for any reason the signal cannot be checked in this way on your daughters TV then go into the TV's tuning menu and select "manual tune" and entering C53 (BBC) into the channel box but with this action NOT being followed by pressing search or scan, as on most devices the level that the signal is being received at will appear in the strength / quality bars, on completion of the BBC1 indications carry out a similar check on the ITV1 mux by entering C60 into the box and giving an update on results.

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jb38's 7,179 posts GB
Friday, 17 January 2014
R
rob
sentiment_satisfiedBronze

12:22 AM
Kidlington

Daughters tv has 64 strength and 99 quality on bbc 54 and 99 on itv. Will try and get Sony upstairs tomorrow. Splitter in loft is just one from screwfix with no power.
cheers
Rob

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rob's 63 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

6:34 AM

rob : Thanks for the update! I would also appreciate if you could let me have the model number of the Sony in question as I would like to check out the service manual for the set, this being something I should really have requested before now.

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jb38's 7,179 posts GB
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