All posts by Chris.SE
Below are all of Chris.SE's postings, with the most recent are at the bottom of the page.
Arch A: & Chris Dale:
As has been mentioned previously by posters on this site, the website owner has had other commitments and has not been able to keep all aspects of the site up-to-date.
For current channel & mux information etc I'll repeat part of my post made on 6th March 2018 (p171) -
For those wanting to do a manual retune, the UHF channels are as follows -
UHF33 (ArqA-COM5), UHF48 (SDN-COM4), UHF49 (BBCA-PSB1), UHF51 (LBS) reception depends on location, UHF52 (ArqB-COM6), UHF54 (D3&4-PSB2). For those with HD tuners - include the following - UHF35 (COM8), UHF36 (COM7) and UHF58 (BBCB-PSB3).
For those wanting a list of Digital changes at Mendip, consult Freeview UK at Coverage Checker - Detailed View
To check reception at your own location, click on Change Address just below the big pink menu bar and then enter your postcode, make sure you have Detailed View ticked.
A list of current Freeview channels can be seen here - Digital UK | Channel listings
Planned Engineering work can be seen here - Digital UK | Planned engineering works
Note - There is planned engineering at Mendip this week with possible service interruptions.
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I expect there will be a belated Transmitter Engineering post to advise that all muxes other than COMs 7&8 and LBS went off-air shortly after midnight.
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Zoi: (and others)
I agree with you it is very annoying when this happens (even when you know it can/will). Unless you complain to the operator as MikerP has suggested, nothing will change! The muxes all came back shortly before 0330.
Advice to you and everyone, re-tuning should ALWAYS be the LAST RESORT and only then if you have checked all else.
If you have lost signal to more than one set then retuning should NOT be carried out (unless you know a transmitter re-tune event has occurred and they are usually messaged on-screen days before the event and can be checked on-line).
IF you seem to have lost signal, the first check to see if ALL channels/muxes have lost signal. If some are still being received, this reduces the chances it might be your aerial system or connections, BUT movements in aerial and bad connections can sometimes have this effect. Use your set tuning system (where possible) to check the strength and quality of the signals you are receiving, if they are normal, then check for transmitter maintenance or faults. Also plug out and in any aerial connectors/flyleads which may help if there's a "dirty" connection. Also consider swapping/replacing a flylead in case it's gone faulty - it can happen.
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Peter Whitehead:
Unfortunately the predicted coverage of COM7 at your location is poor and COM8 will also become poor during Q1 2020 when there are some retune events. You can see this from the Digitaluk coverage checker Coverage Checker - Detailed View
The strange thing is that the mapping shows the whole of Blackpool well within the coverage area of COM7 (& COM8). Whilst I would normally say that this problem is likely to be due to interference from other transmitters as COMs 7&8 are now/becoming SFNs (single frequency networks) all sharing the same UHF channels 55 & 56. However looking at the map, I'm currently at a bit of a loss as to which transmitters might be causing that in your location. Further investigation is needed.
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Peter Whitehead:
I'm hoping someone else might offer a feasible explanation, but at the moment it seems odd. Whilst you have line of sight to all the surrounding transmitters, other than Winter Hill only Moel-y-parc will be using UHF 55&56 and it isn't at present.
You are however surrounded my mobile phone masts, so whether this is due to interference from 4G transmissions from them is difficult to say. In the absence of any other information, I'd suggest contacting AT800 - at800 | 4G & Freeview | 4G interference | 4G Filters | 800 MHz on 0808 1313800 - at800 | 4G & Freeview | 4G interference | 4G Filters | 800 MHz contact-us/ and see if they can supply you with a free filter which might (note might) help resolve the situation. Other than anything that comes to light, good luck with this.
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The channels currently listed as at 21st Mar 2018 are actually the final channels for 2020 with the exception of D3&4 still listed on its current channel of UHF54 when it will be moving to UHF35 in Q4 2019.
Also BBCB is currently on UHF58, and ARQA(COM5) is currently on UHF59.
Full details can be seen on Digital UK's page at Coverage Checker - Detailed View For predicted reception at your own location, click > Change address near the top of the page and put in your postcode.
Any Engineering works will be shown at Digital UK | Planned engineering works under Meridian.
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AntD:
This maybe a question best address to BBC Engineering, try 03700 100 123 as it seems no-one has come up with some ideas.
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Chris: & Alan overy:
There is Planned Engineering work at Bluebell Hill this week with "Possible Weak signal". That's probably what you are seeing the effects of. I'd just be patient.
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Clevedon Resident: & B Daniels Mr: & Lordgeous
There have been a few "bursts" of No Signal over some recent days. As Mendip is not reporting any faults and there is no Planned Engineering this week, I suspect it's the current weather conditions with the high pressure weather system. Patience will be what's required and don't go retuning as you may lose more and tune to incorrect signals or none at all.
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Wednesday 2 January 2019 5:44PM
Nigel tofield;
As has already been said, this sounds like a problem with interference. It's unclear from your post if it just "starts" at some point between 7pm and 7.30pm, or is present for exactly that period only. Whichever, it's clearly a regular event probably on a timer. The most common things are central heating, hot-water heating (Immersion heaters) etc. Igniters or thermostats may have gone faulty, but external flood lighting is another possibility, nor should you rule out any internal lighting such as fluorescents (compact or otherwise) and I'm afraid some LEDs (non-filamentary types which are the most common) all of which may have developed a fault.
Check the timing of your own electrical equipment, and also see if neighbours are having similar issues. It could be a near neighbour that has the faulty equipment.