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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
Sunday, 10 November 2013
M
MikeB
sentiment_very_satisfiedPlatinum

7:47 PM

Jeff Boyle: Looking at the various posts to your reception problem, something stands out - the main reason for concentrating on 4G interference is because that is what you strongly suggested it might be.

However, without that suggestion, the symptons of the problem would point to other factors.

Looking at the basics of the problem, you have recently lost all mux's, apart from the BBC PSB1. You have a loft aerial, with a powered splitter.

Unfortunately, you've given no postcode, so there is no way to check which transmitter, signal path, etc, but its unlikely that any change to a transmitter would result in less signal strength over the long-term. If anything, its the reverse.

If you had lost all muxs, or nearly all, it might be that this was becuase you had possibly retuned to another (more distant) transmitter, the signal of which was just enought to get you PSB1, but no more. However, its unlikely that this would happen on more than one TV (although its always worth checking).

I would suggest you look at your own system. If youe losing signal strength suddenly, its likely to be within the home system. Although you state that nothing has changed at your end, there could well have be a frayed coax, some moisture, a loose connection, etc which has degraded the signal to such an extent that you've lost all but the strongest signal.

Since you have a booster amp, check that the amp is actually working properly, there are no loose connections, and that the power supply is working properly.
PaulN on the Divis thread annouced 5 days ago that his loft amp's power supply had gone, and thus killing his signal . As he wrote 'Back in business with repaired loft amp. It must have been slowly dying for a while' - so it could be that part of the system slowly degrades, rather than stops working altogether suddenly.

If you give a postcode, we can see if there are any 4G stations near you, etc. However, if you look at the number of people who blame 4G, there are actually relatively few who seem to have a problem which is cured by a filter, which suggests that 4G was not a factor in the first place. The fact that yours was not would point to that conclusion.

link to this comment
MikeB's 2,579 posts GB
P
Pierre Josling
9:44 PM
Hungerford

MikeB: Hi Mike
I live in Lambourn RG17 8NP which receives Freeview from the lambourn repeater
(signal starts at Hannington). Since about the 22nd October the commercial stations (ITV, Ch4 Ch5 etc) all started to have audio and video drop out. I have a new wideband digital aerial designed for poor reception areas and the problem still occurs, although Ch 4 seems to have improved.
My neighbour across the road also has the same problem. I have also this weekend installed new cable and changed TV's
Any idea's could it be 4G?

Any idea's would be useful.
Rgds
Pierre

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Pierre Josling's 1 post GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

10:49 PM

Pierre Josling: If there is going to be one channel from Lambourn that is affected then it will be PSB2 (which carries ITV, Channel 4, Channel 5 etc) as it is on the highest UHF channel, it being C58.

Judging by the fact that the metal tower to which the TV broadcast antennas are fitted also has what appear on Streetview to be three sets of mobile phone antennas (so possibly three network operators) there is the possibility that it is being used for 4G transmissions. Obviously with your aerial pointing to the TV transmitter it is also pointing to any potential 4G base station at that location.

I suggest that you give at800 a ring and see if there are any 4G base stations in your area - see at800 | 4G & Freeview | 4G Interference | 4G Filters | at 800 MHz

By the way, I'm not sure why you've changed your aerial. There is no such thing as a "digital aerial" and a wideband aerial isn't required for Lambourn. It is perhaps wishful thinking that you might get more channels than you have!

All channels from Lambourn are within Group C/D, as they were for the former analogue. And the transmission power is, in real terms, a little above that of the former analogue.

I put myself on Hungerford Hill on Streetview and the other side of the valley can be seen. Even with a power of 2W, with clear line-of-sight at 3/4 mile you won't need anything special.

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

10:58 PM

Pierre Josling: If you have a signal amplifier (booster) connected then perhaps you don't need it and indeed, perhaps it is that which is overloading.

link to this comment
Dave Lindsay's 5,724 posts GB
Tuesday, 12 November 2013
N
Neil
5:16 PM

Just to report back on my problems from
"Friday 5 July 2013 5:38PM Newbury"

I finally got a TV engineer round and he turned the aerial to point at Hannington but still got too low db reading at TV end. Then he checked masthead pre-amp and discovered it was dead (well -10db instead of gain).

Really weird thing is it also picks up CP (which is almost 90deg and much further away). The only reason I can think of is that now it has swung round it is very close to our neighbours aerial (not in use I suspect) that points at CP. Anyway, had to manually tune everything and turn off the auto detect feature otherwise the perfectly good channels get replaced by duff ones (grrrr).

link to this comment
Neil's 5 posts GB
Wednesday, 11 December 2013
T
Tig Minor
sentiment_satisfiedBronze

2:06 PM
Faringdon

Is anyone else experiencing reception problems today from the Oxford transmitter? I can only receive BBC1 and BBC2 at the moment. Thought it might be to do with foggy conditions but these have now cleared. Reception usually perfect. Post code SN7 7HY

link to this comment
Tig Minor's 28 posts GB
S
Stevie D
8:44 PM

How com every time we have slight fog we loose signal ?. Surely in anticipation of fog you could boost the signal in advance to stop everyone moaning. SN3 area.

link to this comment
Stevie D's 3 posts GB
Thursday, 12 December 2013
K
k w parker
11:18 AM

Why can I not receive any bbc programms and a variety of others from one tely yet in the bedroom on the 2nd telly all is ok.
I am in a block of flats all using the same aerial system.
This started yesterday and was ok at 7 30 am today but faild at 8 45am.


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k w parker's 2 posts GB
K
k w parker
11:25 AM
Swindon

Failed to submit my postcode which is
SN1 3LW

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k w parker's 2 posts GB
R
Robin
8:22 PM

I'm soon moving to Chinnor, fairly close to the phone transmitter, but it's not in my line of site to the tv transmitter. What would be a suitable type of aerial to give an appropriate strength signal for an in loft location? (post code OX39 4df).

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Robin's 1 post GB
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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