Full Freeview on the Oxford (Oxfordshire, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 51.790,-1.179 or 51°47'25"N 1°10'46"W |  | OX3 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 04/11/2024 Pixelation or flickering on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
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 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.
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?
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
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-80s | 1984-97 | 1997-98 | 1998-2011 | 2011-13 | 2013-18 | 2013-17 | 23 May 2018 | ||
| VHF | C/D E | C/D E | C/D E | C/D E | C/D E T | W T | W T | ||
| C2 | BBCtvwaves | ||||||||
| C29 | SDN | ||||||||
| C31 | com7 | com7 | |||||||
| C37 | com8 | com8 | |||||||
| C41 | BBCA | ||||||||
| C44 | D3+4 | ||||||||
| C46 | _local | ||||||||
| C47 | BBCB | ||||||||
| C49tv_off | C5waves | C5waves | |||||||
| C50tv_off | SDN | SDN | |||||||
| C51tv_off | LOX | LOX | |||||||
| C53tv_off | C4waves | C4waves | C4waves | +BBCA | +BBCA | +BBCA | |||
| C55tv_off | ArqB | ArqB | ArqB | com7tv_off | |||||
| C56tv_off | COM8tv_off | ||||||||
| C57tv_off | BBC1waves | BBC1waves | BBC1waves | BBCB | BBCB | BBCB | |||
| C59tv_off | -ArqA | -ArqA | -ArqA | ||||||
| C60tv_off | ITVwaves | ITVwaves | ITVwaves | -D3+4 | -D3+4 | -D3+4 | |||
| C62 | SDN | ||||||||
| C63 | BBC2waves | BBC2waves | BBC2waves |
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
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Saturday, 18 January 2014
J
jb388:55 AM
rob: Many apologies for the delay in replying, this purely being down to work commitments in other areas and the time consuming travelling associated with same.
However, your latest reports / tests carried out etc does seem to indicate that the problem is indeed connected with interference being emitted from a device located on the other side of the dividing wall in your neighbours property, but though with the offending device not necessarily always being positioned in exactly the same place hence the erratic nature of the interference.
As far as filters are concerned, these devices will only work "if" the interference is entering the TV via its aerial socket and is not being directly injected into the set via the mains cabling etc, the other point being that your under floor cabling would not appear to come into the equation by the fact of you still experiencing the problem when using the temporary fly lead.
I feel that the only way of finding a solution to the problem is by "subtly" bringing the subject up with your neighbour, because if it is being caused by them having recently started using such as a baby alarm or some other recently acquired device then they could easily move whatever to another position within the same room as interference from these type of devices usually falls off rapidly over short distances.
As far as filters are concerned, these devices will only work "if" the interference is entering the TV via its aerial socket and is not being directly injected into the set, or maybe even via the mains cabling etc.
On the subject of your COFDM query, put in somewhat simplified terms it refers to the type of modulation system used for digital Freeview reception (DVB-T) and with the AGC referred to being the level of automatic gain that's applied by the tuner relative to the strength of the signal being received and likewise with this being subject to wide variations being seen, although the figure being indicated is always higher in strong signal areas due to the tuner levelling the signal out
You might also have seen various other technical info being mentioned such as pre and post viterbi figures etc and which are basically referring to the "before and after" bit error code correction (BER) or quality of the signal, however Sony is one of the few brands that care to provide this type of information and which it has to be said is of no assistance whatsoever to the average viewer, as its something more allied to that seen on professional signal meters as used by aerial installers etc.
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S
Simon J Bolton9:15 AM
Rob/JB38 and all - I've been following this topic with interest but I have to ask: Why be subtle with your neighbour? Just go round, explain the problem and ask them if they have anything against or near the party wall which might be causing interference. If they're nice neighbours they'll tell you anyway, and if they're not there's no point in being subtle!
If there is some sort of mobile device next door causing intermittent interference then if the neighbours are reasonable they will reposition it and that may indeed solve your reception problem. Surely better to be direct with your request rather than hope the neighbours understand subtle? Just a thought...
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R
rob10:50 AM
Kidlington
Thanks all especially jb38, will have to have a word with my new neighbors and see if they have anything on the other side of the wall. Just one more question (sorry) is it normally fir this type of interference only to effect certain programs, in my case all the ones on channel 60. Others are not affected at all.
again many thanks
Rob
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rob's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
Sunday, 19 January 2014
J
jb3812:33 AM
rob: Yes, but only if the interference is caused by a harmonic of another frequency, for example such as in the case of interference from a Tetra base, if though the interference is cause by general digital noise then it would affect a range of channels.
This is a link to a filter that covers interference from both sources.
4G / LTE / TETRA / GSM / TV AERIAL INTERFERENCE FILTER | eBay
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R
rob8:56 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: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
P
pikpilot12:57 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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rob1:17 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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rob's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
N
nickwilcock7:58 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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rob8:30 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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rob's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
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pikpilot11:07 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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