All posts by Chris.SE
Below are all of Chris.SE's postings, with the most recent are at the bottom of the page.
Paul Branson:
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
As already posted by Mike, it will "sort itself out" in due course, but it is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and as noted by Barry Hardwick it only affected one frequency for him, but it can/will be different for others.
Andy Dodds: this has nothing to do with 5G, it's as I've posted above. However it's quite understandable that you haven't appreciated this and people like chris ashton, Carole, Paul Ellam, Josephine Evans, Patrick Dent and other that have posted wonder what is going on and think there is a transmitter problem. People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception!
As already mentioned, you are advised not to retune as you will probably lose correct tuning. As noted by another Andy, the UHF channel listing here for Sandy Heath (and elsewhere & for many other transmitters) is incorrect. There are over 1100+ transmitters in the UK and the site owner here has been unable to keep up with all the 700MHz clearance changes.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes. For Sandy Heath the correct UHF channels are at present as follows -
C27, C24, C21, C51, C36, C48, C55, C56 & C35 for the multiplexes PSB1/BBCA, PSB2/D3&4, PSB3/BBCB HD, SDN, ArqA, ArqB, COM7 HD, COM8 HD and the Local Cambridge mux., reception of the Local Multiplex will be very dependent on location. Also note there is a retune event due on the 12th Feb.2020.
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S knowles:
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
You are advised NOT to retune whilst this continues which could be for a couple more days. Many have posted elsewhere about similar problems. People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception!
If you have retuned, you may have lost correct tuning. You will have to try again and it could be hit and miss whilst these conditions continue. If you are able to do a manual tune the correct UHF channels for Dover are -
C33, C35, C36, C39, C42 & C48. If you don't have an HD tuner, ignore C36.
You may still receive interference or the wrong channels whilst this unusual propagation continues.
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Ken Reaveley:
It has nothing to do with 5G!!
Quote "It is not sunny and warm, so no signal inversion." Sorry, WRONG, Sunny and warm isn't necessarily directly relevant. But it is unusually warm for the time of year!
All: There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes. For Bluebell Hill the correct UHF channels are C32, C34, C40, C43, C46 for the SD multiplexes, C45,C55,C56 for the HD multiplexes and C21 for the Local Multiplex. Reception of particular multiplexes, especially the COMs7&8 and Local will depend very much on location.
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Rex Bartlett and others:
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes.
The UHF channels for Oxford are C41, C44, C47, C29, C37, C31, C55, C56 for (PSBs1-3, COMs4-8).
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Rex Bartlett:
Further to your remarks about Seagry Court, this requires an aerial with the rods vertical pointing virtually due E (bearing 88 degrees). So whilst your aerial is pointed at Oxford (rods horizontal) bearing 64 degrees (approx. ENE) you are unlikely to get a signal from Seagry Court. FYI its channels are C39, C42, C45, C40, C43, C46 it has no COMs7&8.
As you probably know, Seagry Court is West region, whilst Oxford is Meridian.
Also note that your reception of the COM muxes, especially ArqB and COM7 from Oxford could get a bit more iffy during/after Feb/Mar/April next year due to transmitter retunes elsewhere which may cause a bit more interference.
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Lib. :
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes.
The correct UHF channels for Ridge Hill (Central) are C28, C25, C22, C21, C24, C27, C55, C56 If you don't have an HD tuner ignore C22 & C55/C56. You may not get C55/56 - COMs7&8 at your location anyway.
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Mrs oliver, J Clark & Tim:
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes.
The correct UHF channels for Tacolneston are C40, C43, C46, C42, C45, C39, C55, C56, C32 for multiplexes PSBs1-3, COMs4-8 & Local. If you don't have a HD tuner ignore C46/C55/C56. Reception of multiplexes will depend on location especially COMs7&8 & Local which may not be received.
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christine:
Your location is not predicted to have good reception of most multiplexes unfortunately. There is not a problem with the transmitter. I'd suggest that you check all your coax plugs, connections, flyleads etc, unplug connectors check for corrosion or other problems and reconnect them. Flyleads are a common problem, try swapping/changing them. See what signal strengths and quality you are getting for the multiplexes shown in your Box/TV's tuning section. Also check that your downlead looks undamaged (especially if it is old) and that your aerial seems intact and pointing in the correct direction.
Problematic connections, water ingress etc. can seem to affect reception of just an individual or several multiplexes.
For reference, the correct UHF channels for Tacolneston are C40, C43, C46, C42, C45, C39, C55, C56, C32 for multiplexes PSBs1-3, COMs4-8 & Local. If you don't have a HD tuner ignore C46/C55/C56. Reception of multiplexes will depend on location especially COMs7&8 & Local which may not be received.
Having said the above, currently there are interference issues. If you still have problems after this clears up, you might be advised to get a local aerial expert to check you have the optimal installation for your location.
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes.
eric priestley:
Please note the above. You are predicted to get Good reception from the Heathfield transmitter under normal circumstances. The correct UHF channels for Heathfield are C41, C44, C47, C40, C43, C46 for PSBs1-3, COMs4-6.
If you don't have an HD tuner ignore C47.
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Vicky:
In addition to what StevensOnln1 has said there is also interference currently.
There are unusually high levels of "Tropospheric propagation" at present, often associated with High Pressure weather systems.
These levels of propagation are unusual at this time of year - they cause signals from more distant transmitters to travel a lot further than normal. It is currently affecting different parts of the country by varying degrees and signals can change by the second or remain stable for much longer periods.
In the old "analogue" days there was a lot of talk about "continental" interference often in the summer months, but the interference can come from transmitters anywhere in the UK or Europe and even further afield. At the moment some people are getting DAB radio from the Netherlands and FM Radio from France as well as the interference to DTV.
It is predicted to continue for a couple more days, and you are advise NOT to retune as you will likely lose the correct tuning that you had. The "propagation" can be very frequency dependent, and it can only affected one frequency or several, but it can/will be different for others.
People will however have noticed the unusually mild weather which the Met office is referring to as a "Foehn effect" but it's not helpful that it seems none of the major broadcasters are making any reference to the interference being caused to TV and Radio reception! So it's no surprise that people wonder what is going on and think there is a transmitter problem.
For those that have retuned and lost correct tuning, you will have to try again and it could be hit and miss whilst the unusual propagation continues. If you are able to do a manual tune for the correct UHF channels, you may still receive interference or the wrong programmes.
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Sunday 29 December 2019 11:24PM
Martin Ridley:
As StevensOnln1 says this is likely to be some form of electrical interference. If you actually mean 1.00am ie 0100hrs, this is often around the time when Economy 7 (or off-peak supply) switches onto the low overnight rate for storage and similar heating. If you or a near neighbour have this, you may have an "arcing" connection or thermostat somewhere and you should try and find it sooner rather than later.
How long does the loss of Freeview continue?
Also, you have posted on the Fenham transmitter page but your predicted transmitter should be Pontop Pike - your aerial should be pointing pretty well SW (bearing 228 degrees). If your aerial has moved in recent high winds, this could weaken your signal and make it more vulnerable to all sorts of interference.