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-   -   Terrestrial DTV in the UK - Channel offsets (http://www.homecinemabanter.com/showthread.php?t=59080)

Andy Wade June 23rd 08 12:14 AM

Terrestrial DTV in the UK - Channel offsets
 
Scott wrote:

Does this mean they will end with analogue switch-off?


No, the use of offsets will continue after DSO.

Will the decoders in affected areas need a rescan even if the channel
numbers on paper remain the same?


Yes, regardless of offsets.

--
Andy

Mark Carver June 23rd 08 08:25 AM

Terrestrial DTV in the UK - Channel offsets
 
Scott wrote:
Will the
decoders in affected areas need a rescan even if the channel numbers
on paper remain the same?


Yes. As Andy says regardless of offsets. Without exception, all transmitters
will have at least the three PSB muxes moving allocation (normally to occupy
three of the present four or five analogue channels) and even if they're not,
the post DSO muxes will be different configurations, so that alone will
require a rescan.


--
Mark
Please replace invalid and invalid with gmx and net to reply.

charles June 24th 08 07:15 PM

Terrestrial DTV in the UK - Channel offsets
 
In article . co.uk.invalid,
Alan Pemberton wrote:
Andy Wade wrote:


Except that -ve offsets are never used on ch. 21, nor +ve offsets on ch.
68. There are strict out-of-band spectrum masks to meet.


Ah, that will be where those System I-1 analogue transmitters come in
then, with their reduced lower sideband (0.75MHz instead of 1.25). That
wouldn't work on E67/68 of course, but surely E69 is within the
broadcast band, and therefore spillable-into, even though it's not used
by any UK tv transmitters?


There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but in
the UK it was originally 88 - 95. Then 88-100, then 88 -104 and finally
88-108.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11


Bill Wright June 24th 08 07:36 PM

Terrestrial DTV in the UK - Channel offsets
 

"charles" wrote in message
...
In article
. co.uk.invalid,
There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but in
the UK it was originally 88 - 95. Then 88-100, then 88 -104 and finally
88-108.


There are RSLs below 88.0MHz.

Bill



charles June 24th 08 07:44 PM

Terrestrial DTV in the UK - Channel offsets
 
In article ,
Bill Wright wrote:

"charles" wrote in message
...
In article
. co.uk.invalid,
There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but
in the UK it was originally 88 - 95. Then 88-100, then 88 -104 and
finally 88-108.


There are RSLs below 88.0MHz.



I wrote approx. The band actually starts at 87.5MHz

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11


Bill Wright June 24th 08 07:46 PM

Terrestrial DTV in the UK - Channel offsets
 

"charles" wrote in message
...
In article ,
Bill Wright wrote:

"charles" wrote in message
...
In article
. co.uk.invalid,
There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but
in the UK it was originally 88 - 95. Then 88-100, then 88 -104 and
finally 88-108.


There are RSLs below 88.0MHz.



I wrote approx.

I'll let you off then.

Bill



Marky P June 24th 08 09:02 PM

Terrestrial DTV in the UK - Channel offsets
 
On Tue, 24 Jun 2008 18:46:56 +0100, "Bill Wright"
wrote:


"charles" wrote in message
. ..
In article ,
Bill Wright wrote:

"charles" wrote in message
...
In article
. co.uk.invalid,
There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but
in the UK it was originally 88 - 95. Then 88-100, then 88 -104 and
finally 88-108.


There are RSLs below 88.0MHz.



I wrote approx.

I'll let you off then.

Bill

There's quite often RSL's on 87.7

That really wasn't very good english were it ;-)

Marky P.


charles June 26th 08 08:44 PM

Terrestrial DTV in the UK - Channel offsets
 
In article o.uk.invalid,
Alan Pemberton wrote:
charles wrote:
There's the "Broadcast band" and the "UK Broadcast Band" Ch69 has other
allocations in the UK. Rather like Band 2. It was 88-108 (approx) but
in the UK it was originally 88 - 95. Then 88-100, then 88 -104 and
finally 88-108.


You sound like just the chap to answer this, then, Charles: Channel B14
(216-221MHz) was always included in channel frequency lists, though as
far as I know there were never any transmitters allocated there in the
UK. Was it not available to UK broadcasters after all?


can't help. by the time I got involved with frequency allocation, Band 3
had stopped being available for broadcasting in the UK. I'm sure you're
correct, UK broadcast bands always seemed to be limited by other people.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11



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