All posts by Chris.SE
Below are all of Chris.SE's postings, with the most recent are at the bottom of the page.
Fred:
Hello Fred, you haven't said where your aerial is, whether the rods are horizontal or vertical and which way it's pointing!
Is it accessible? If you can see the end of it, can you see if it has a colour bung in the end?
The bung might be Green, Yellow, Black, Brown, or if pointing at Amlwch it could be Red or Grey.
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David Roberts:
Yes, but it does NOT say on that page that the simulcast ceases on the 20th. You have read too much into that. If you search for the more detailed information about the retunes in the various other pages & documents available, it's all quite clear. Clearly you are doubting me because you haven't researched enough!
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David Levitt:
Ah, now that you've mentioned an amplifier, you may have too much signal, as the power on PSB1 & PSB2 was upped from 0.4kW to 0.8kW. If the amp has variable gain, try turning it down a bit, otherwise try without it in circuit to see what you get (not just switched off - aerial direct to TV). You need to be aiming for maybe a touch less than 100% signal so that you get 100% quality.
Otherwise good luck with the engineer visit who will no doubt resolve it if you can't in the meantime.
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Brian Day:
The UHF channels now used at Emley have been explained in several recent posts, but in particular see my post at 7:48pm on the 5th Feb. on p217 here.
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Michael Salway:
Mendip uses the following channels C30, C32, C33, C34, C35, C36, C48, C55, C56
You can pick a free channel, but as you may know it's best to avoid channels where an adjacent channel or C+5 or C+9 might interfere. Personally I would pick a high channel well above C56 - as high as you like! Another thing to watch is that your modulator signal isn't too strong and doesn't desensitise your tuner's front end. If it's not adjustable and you have a problem then perhaps try a variable attenuator.
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Cliff Phillips:
Unfortunately you are not in a good spot there for reception of the COM multiplexes from Carmel, but you should be having no trouble with the PSB ones which you should have tuned on C23, C26 & C29 for the BBCB HD mux.
Are you getting COM6 on C48?
The fact that you say that the remaining channels are poor reception and subject to atmospherics makes me wonder how old your aerial is? The original Aerial Group for Carmel was a C/D and the changes now mean the all but COM6 are in Group A, so ideally a Group K aerial is best, although a Group T /Wideband covers the channels depending on the aerial chosen it's not as sensitive. A Group C/D aerial has a Green plug in the end if you can see the end of the aerial.
You mention that you are now getting better quality BBC/ITV from the South West (presumably Huntshaw Cross?). Apart from such signals travelling quite well across the water, if this was the last few days and/or back around the New Year period there have been some quite strong "atmospherics" - "Tropospheric Ducting" that can come with high pressure, but it has been unusually strong for the time of year, as is often not as strong even in summer. You are probably picking these signals up on "side-lobes" of your aerial's reception pattern. If you are not getting C33 & C36, you could try C32 & C34 from Huntshaw Cross but no reception is predicted but specific locations can have unexpected results. I'd not be optimistic because all those just mention channels are used by Mendip, which in all probability may give enough interfering signal at your particular location. You could try C42 & C45 from Wenvoe, but they aren't in your aerial's normal beamwidth and in any event you might get interference from Preseli.
Back to aerials, if you have an old Group C/D this will be the primary issue and it's a shame you didn't say something about it back then because you could get free support (normally a 3 month time limit) from Freeview if you don't have Satellite or Cable. However as you had problems with the PSB multiplexes lately with the Tropospheric Ducting I'd still see if you can get some free help - ring Freeview on 0808-100-0288 tell them it's been bad since July but especially so with the recent weather.
If you don't have an old aerial, post back with some more info and I'll make some other suggestions.
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David Levitt;
This is odd. You should not be getting anything on C26 as according to Freeview documents PSB1 (BBCA) should have moved from C26 to C31 and PSB2 (ITV.Ch.4/5) from C23 to C37 as in my previous post.
Have you tried manual tuning on C31 and C37?
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Michael Dawson:
You have missed out C33 which is now used by Emley for the SDN/COM4 multiplex, however if you aren't getting programmes on C33, C36, C41 etc., you should do as StevensOnln1 has stated.
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David Levitt:
The current storm is unlikely to have any effect - unless it damages your aerial or downlead!
So it sounds like someone may have visited the transmitter and resolved the problem.
Personally I would turn off auto update of tuning because if there is future "atmospherics" - "Tropospheric Ducting" which sometimes come with High Pressure, which we've has a bit of lately - normally more common in summer - then your set could retune to stronger signals from other regions or foreign stations, or just loose current tuning if the incoming signals just caused strong enough interference.
There aren't any more "multiplex retunes for Chesterfield anyway. The only need to retune is if broadcasters move there channels to different multiplexes - which we've had some of lately, or rename them (some sets will do this automatically anyway - renaming is not technically a retune).
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Thursday 6 February 2020 8:38PM
To be clear, in case anyone gets confused, the reduction in power to 47.86kW is for the COMs 7&8 multiplexes, the main multiplexes PSBs & COMs are all 174kW.