All posts by will
Below are all of will's postings, with the most recent are at the bottom of the page.
Peter Snape: I give up. Why?
Seriously, if you want an answer, we need details like:
a) makes and models
b) how they get their signals
c) anything else that might have a bearing
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MikeP: According to this Digital UK document:
About us | Freeview
BBCB changed from UHF ch25 to ch37 on the 4th September.
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john: Sony Movies Christmas, formerly True Movies, is only available on Local Multiplexes.
The Bluebell Hill Local Multiplex is on UHF channel 21.
It may be that the Local Multiplex is not available at your location.
We need your postcode to see the predicted coverage at your location.
You can see for yourself if you go to About us | Freeview and enter your postcode in the Coverage checker.
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Ray Taylor: I've assembled some links that might contain an explanation:
Bluebell Hill - Possible weak signal
Planned engineering works | Freeview
Coverage checker for TN14 7JW
About us | Freeview
New relay:
"11 July 2019
The BLUEBELL HILL transmitter group, serving north and mid Kent
Gillingham MOT
RF Channel
32PSB1 (BBCA)
34PSB2 (D3&4)
45PSB3 (BBCB)
Power change: the ERP will launch at 400W for all multiplexes":
About us | Freeview
Coverage checker for a Gillingham postcode:
Gillingham Testing Centre
About us | Freeview
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Chris.SE: Caldbeck Scotland, which is co-located with Caldbeck, has BBC B on UHF channel 21 and looks almost as good as Caldbeck from the given postcode - it's running at half the power of the Caldbeck BBC B.
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MikeP: Yes Mike, it's a poor show.
They are different. "Liverpool TV" is on - you guessed it - L-LIV but L-MAN has "That's TV".
What's more, this:
About us | Freeview
shows both LOC1 (MAN) and LOC2 (LIV) moving from 56 to 24.
Confused? Not half!
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fincher: Try asking Sony:
Sony Movies Christmas | Sony Movies UK
There's a Contact Us link on the page.
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Denis: But, assuming we aren't powering something, do we need a DC connection at all, given that the stray capacitance between the centre conductor and pin is a virtual short at these frequencies?
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richard: The Coverage prediction for your postcode is good but assumes a group T aerial. Your current aerial is likely a group B, which will not now provide sufficient signal for BBC4 HD since the change to a higher band.
If you have no other way of getting BBC4 HD, you may qualify for a free replacement aerial.
Find out how, here:
Important changes to Freeview | Freeview
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Monday 22 July 2019 10:00PM
Preece J: There is a trade-off between available capacity and the amount of error correction.
The more error correction there is, the easier it is to get the multiplex without error, but at the cost of available capacity.
The PSBs, BBCA and D3&4, have 1/3 of the transmitted data devoted to error correction, leaving 2/3 for actual services.
The COMs ARQA, ARQB and SDN have 1/4 of the transmitted data devoted to error correction, leaving 3/4 for actual services.
So, for example, BBCA has an available capacity of 24 Mbps (Mega bits per second) while SDN has 27 Mbps.