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All posts by Chris.SE

Below are all of Chris.SE's postings, with the most recent are at the bottom of the page.

C
Map of all DAB transmitters
Friday 7 January 2022 1:42AM

George Lindsay:

Well, I know you've asked this several times, but there is no specific information except one source says a mast was promised back in 2004!!
The only thing in the future is "Small Scale Licences" , where OFCOM will be advertising for a licence for the Dunfermline and Kinross area in a future round (TBD - sometime after Round Three which hasn't been advertsied yet, was initially going to be Q4 2021 !).

That said you are surrounded by masts, although Kirkton Mailer just south of Perth doesn't have the BBC National multiplex Block 12B: 225.648 MHz, the others do and you are predicted to get good reception of 12B from them all.

All of them also have the D1 multiplex on Block 12A: 223.936MHz. They are -
Craigkelly (nearest), to your ~SSE, Angus to your ~NE, Earls Hill to your ~WSW, Kirk O'Shotts to your ~SW).

Of those latter 4, the first two have the SDL multiplex on Block 11A: 216.928 MHz.
Angus has a Local multiplex on Block 11B: 218.640 MHz, the other three should have a Regional mux on Block 11D: 222.064 MHz.

I can't find any decent predictions for the Commercial National muxes, but from the masts that have the BBC National 12B, I would hope you'd get the commercial muxes as well, but not necessarily the Local ones.

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aytch:

Those figures are good except strange that K29 is down on quality a bit.
You have nothing for K47 because that's an HD multiplex and you need a T2/HD tuner for HD which yours obviously isn't.

I think the only way we are going to arrive at the best solution (and the most cost effective/cheapest) is for you to do some practical experimenting.

Now we have the DTT signal information for your existing set up. I don't know how you assess your FM reception - maybe by the weakest signal you get with acceptable noise? Whatever, make a note of it.

1) Disconnect the FM aerial coax from the TV aerial and then note the signal/quality figures for each TV channel again. Then connect the aerial direct to the TV without the amp and note the signal/quality for each channel again.

2) Remove the coax from the TV aerial and connect it to the FM aerial. Assess you FM reception, first without the amp (coax straight to the tuner) and then second with the amp.

3) Reconnect everything as you had it originally and post all the TV figures and your assessment of FM reception in both cases in 2) and compared to your original setup.

Then I'll try to make some further suggestions.

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Aytch:

No problem, I didn't expect you to rush, in your own time. Yes, I noted the need for Arctic-wear when putting some Xmas decorations away :)

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Pixie:

Ch4 are highly unlikely to see your comments here as this isn't their website (it's an independent technical help-site).
You should contact Ch4 about your concerns - Contact us | Channel 4
I would use the on-line form and keep a copy of your comments (text copy/paste), (I've not used this latest version before so there may be an option at the end to email you a copy of your comments.
IF they do not broadcast subsequent episodes with subtitles, you may care to copy your comments to OFCOM as well.

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Dave
Saturday 8 January 2022 10:15PM

Jon Taylor:

Dave is carried on the ArqA/COM5 multiplex, so if this is a signal reception problem you should have the same problem with other channels on that multiplex eg. Really LCN 17, Sky Arts LCN 11 etc.
See Channel listings for Industry Professionals | Freeview for which channels are carried on which multiplex (note there's no Local mux at Angus).

The Angus transmitter isn't currently listed for Planned Engineering, nor can I find any current faults listed.
You should normally have near excellent reception from Angus.

As ArqA is on UHF C36 at Angus, you haven't got any old equipment with an RF modulator switched on per chance? Eg. an old games console , an old Skybox etc. A lot of them used C36 as the default channel for their analogue output.

Other than that, I would check that your aerial seems intact and pointing in the correct direction and that your downlead looks undamaged (especially if it is old) and is secure and not flapping in the wind.

Have you checked the connections behind your TV?
I'd 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.

Problematic connections, water ingress, Aerial misalignment etc., can seem to affect reception of just an individual or several multiplexes.

What's the signal like on channels on the ArqB multiplex which is on UHF C48 - eg. EPG LCN 23 Dave ja vue, LCN 26 Yesterday, LCN 33 Great! Movies etc. ?

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Mr&Mrs Williams:

If it is due to "high winds" it's highly unlikely to be a transmitter issue, but more likely a problem with your own aerial. But as we don't know which transmitter you get your signal from, we don't know if there's a transmitter fault.
We'd need a full postcode and ideally the direction your aerial is pointing to check on that.

I would check that your aerial seems intact and pointing in the correct direction and that your downlead looks undamaged (especially if it is old) and is secure and not flapping in the wind.

Have you checked the connections behind your TV?
I'd 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.

Problematic connections, water ingress, Aerial misalignment etc., can seem to affect reception of just an individual or several multiplexes.

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Mr&Mrs Williams:

My apologies, you imply you get your signals from Caradon Hill as you've posted on its transmitter page. I can't find any listed faults for the transmitter and it's not listed for Planned Engineering.

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Anthony:

What you say is obviously correct about capacity using DVB-T2 format, I don't believe there is anything restricting Arqiva from starting to convert any of it's two multiplexes (ArqA, ArqB) to T2. I wouldn't think such a change would take place country wide in one go, I'd suspect it would be region by region, or maybe transmitter group by transmitter group.
I think it highly unlikely that any of the PSB multiplexes would be first as there are still many people without T2 receivers. Once the COM muxes were converted then the PSBs could be done and maybe a scheme similar to that for DSO with set-top boxes for the low income families/pensioners etc. for the few remaining people that didn't have T2 receivers.

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Tracey Williams:

Without a postcode, I can only assume you are in the Southern/SouthWestern part of Somerset if you can also receive Stockland Hill. How did you get tuned to Stockland Hill? Did you do a retune and why?
If you happened to retune when you had no signal (from Mendip) then that's why. If you were correctly tuned to start with, It is never advised to retune when you have no signal.

The best solution in these situations is usually as follows -
Unplug your aerial from the TV and then do an automatic full retune. As you should have no signal at all, this should clear all previous tuning.
If you are using something like a Youview box instead, this might not clear the channels, you may have to end up doing a reset and so watch what it may do to any recordings, you'll probably have redo any scheduled recordings you've set.

Then, plug the aerial back in and on your set select manual tuning do you can tune to Mendip's UHF channels.
Mendip's correct UHF channels are C32, C34, C35, C48, C33, C36, C55, C30. That's is the order BBCA/PSB1, D3&4/PSB2, BBCB HD/PSB3, SDN/COM4, ArqA/COM5, ArqB/COM6, COM7; Local mux. You most likely won't get the Local Mux to the south of Mendip as the Local mux is beamed northerly towards Bristol and South Gloucestershire. You may not get COM7, that's very location dependent.

See Channel listings for Industry Professionals | Freeview for which channels are carried on which multiplex.

If for some reason your set doesn't give a manual tuning option, then automatic retune should allow you to select the region which should be West not Southwest.

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Eirian Williams:

I'm assuming that you could well be in the same location as Tracey Williams -
see my reply Mendip (Somerset, England) Full Freeview transmitter | free and easy

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