All posts by Nick
Below are all of Nick's postings, with the most recent are at the bottom of the page.
I see Sudbury has the fourth engineering works since they supposedly upgraded the service in July. Please does anyone know if so much engineering work is usual, ie, does it denote a problem?
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I am sort of pleased to hear that, Tony.
Anyone else with problems, esp from the mux on ch 60, would like to hear about.
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Certainly the muxes on 56, 58 and 60 are severely down on the others within the old group B, and that is using a wideband aerial, with c 60 being far and away the worst.
May interest you to know, Peter, that your Clacton transmitter is coming in all the way here, but not a lot of point as it is 'light' and only carries the channels already received well from Sudbury.
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That is very interesting, Dave., In other words, they have not got their act together with the coms.
Please would you explain 'beam tilt?'
I notice that the aerials on the mast are at different heights, if that is what is meant by 'xxx datum.' But the strange thing is that ITV 3 appears to be on the lowest position yet comes in more reliably than the mux using channel 60, which is higher but downright appalling.
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JB, you are a wonderful fella, thank you for such a long detailed reply.
It may be a silly thing to say, but don't those responsible for setting up the transmitter test such things?
In analogue days the only problem was from the Dutch, and I was proud of my set up which brought in C5, on a fifth the power of the others, 100%
Beam tilt means the aerial on the tx might be pointing a bit towards the ground?
Would it be a fair assumption to say that with 4 sets of engineering work since upgrade in July, they might be aware of a problem?
Meanwhile, for your info, Dover continues to come in well. I had only one day when I lost the main BBC and ITV muxes, it was foggy. The strange thing was that the muxes on only half their power still came in.
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JB.
My Icecrypt box is currently tuned to C60 as there was one day conditions allowed it, but experience tells me it would be foolish to retune again manually or auto for the following reason.
The signal strength and quality bars vary a little on the other channels as I watch them, but on C60 they flash between 0 and 90% in fractions of a second. I really cannot fathom this, and it is this which stops the box finding c60 if I do a retune. Any ideas please?
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Thanks JB, but I thought we had more or less decided it WAS a transmitter problem.
I know aircraft cause signals to flutter, noticeable on fm, but my 0-90% is only for fractions of a second, only on C60, and happens at Aldeburgh and Hollesley, sufficiently far apart not to be suffering from the same object in the way. What did you think of my notion that the tx aerial might be facing a bit downhill, and therefore struggling to go far?
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Thursday 18 October 2012 6:54PM
Aldeburgh
Could be Kevin, but the radiation pattern should be the same for all muxes. You are closer to the xmitter. I still think there is a problem, just with this mux, as I can get all manner of transmitters with the aerial turned, including Dover, but that is no good for local news.