Annoying Sound Problem

On Monday, December 27th, 2010 at 16:54:06h +0000, Bod explained:

For what it's worth, I have freeview and Freesat HD, the quality of SD
broadcasts off of the satellite is almost as good as HD quality. The
picture is that much sharper and clearer/better colours etc.

I thought that quite a number of the ITV-1 regions on satellite were
broadcast with a far below SD needed bit rate resulting in a picture
far worse than that available on Multiplex 2 / PSB-2 ?

"Terry Casey" wrote in message
...
In article ,
says...


I had sky here in the UK and wifi for five+ yrs with no problems. The
sky box and router where approx 10ft away from each other with a brick
wall between though laptop and mobiles registered a strong signal in the
room where the sky was installed.


Signal level halves every time you double the distance so, taking your
10ft example, the
Sky box would see double the power if the separation was 5' and four times
the power at
2' 6".

RF normally follows the inverse square law so doubling the distance reduces
the signal level to a quarter.

--

Brian Gregory. (In the UK)

To email me remove the letter vee.

In message , "Brian
Gregory [UK]" writes
"Terry Casey" wrote in message
...
In article ,
says...


I had sky here in the UK and wifi for five+ yrs with no problems. The
sky box and router where approx 10ft away from each other with a brick
wall between though laptop and mobiles registered a strong signal in the
room where the sky was installed.


Signal level halves every time you double the distance so, taking your
10ft example, the
Sky box would see double the power if the separation was 5' and four times
the power at
2' 6".

RF normally follows the inverse square law so doubling the distance reduces
the signal level to a quarter.

I've got a feeling that my cordless mouse (27MHz) might have been making
my Ross SD FTA satellite receiver crash occasionally. It was only around
18" away from the computer-end external transceiver thingy, so I've
moved it a bit further away. There's also a wireless router (2.4GHz)
about 4' away from it. I'm keeping a watching brief on the situation.
--
Ian

In article ,
says...

On 27/12/2010 11:01, Terry Casey wrote:
In ,
says...


I had sky here in the UK and wifi for five+ yrs with no problems. The
sky box and router where approx 10ft away from each other with a brick
wall between though laptop and mobiles registered a strong signal in the
room where the sky was installed.


Signal level halves every time you double the distance so, taking your 10ft example, the
Sky box would see double the power if the separation was 5' and four times the power at
2' 6".

Put them next to each other - say 1' 3" apart, and the power level will increase
eightfold. In metric terms this would be 3m, 1.5m, 750cm& 375cm.

This is in free air - the brick wall, of course, will add additional attenuation!

It is interesting when the above is applied to mobile phones, where an additional factor
comes into play.

Because the base station has to handle many incoming transmissions at once, it likes to
have them all arriving at the same level, so there is an ongoing dialogue between base
and mobile which adjusts the mobile's transmit power appropriately.

Think about this the next time some parent starts crowing about their success in
preventing the big, bad mobile operator from putting up a mast near little Billy's
school, then happily send little Billy off to school with a microwave transmitter
(mobile) which now needs to transmit at a much higher power a mere 2cm from little
Billy's brain!


My virginmedia V+ box is 50cm from my Netgear routerwhich is 10 cm away
from my TV with no effect either.


Hardly surprising as the discussion involves 2.4GHz wifi interference with satellite
reception.

Ther highest frequency on most VM networks is 750MHz [1] and the highest possible is
862MHz

[1] Ex ntl networks. Although some network build had 862MHz capacity, older 600MHz
networks were only upgraded to 750MHz.

--

Terry

"Bod" wrote in message
...
On 26/12/2010 21:19, Walt Davidson wrote:
On Sun, 26 Dec 2010 19:51:13 -0000, "the_constructor"
wrote:

Did you have a protracted argument with them before they would accept
your cancellation? I believe they require 30 days' notice (paid for)
of cancellation!

Oh yes Walt, too true I did. I finished up telling the lad to stop
giving me
the third degree, shut his mouth, open his ears and listen...... I JUST
WANT
TO CANCEL MY SUBSCRIPTION....
He gave me all the bumf that he was only asking and not pressuring me in
any
way, funny, I thought he was trying to bully me into putting the sky in
another room..... I just told him that I had SKY Freesat in every room
bar
the lounge, which I have, that shut him up.
I know the poor sod is only trying to do his job as per SKY protocol.
Jim G1SSO

Ha ha! I thought as much. I actually cancelled my subscription once
before, in 1999, and even then they gave me the third degree! I told
them I was going to university for three years and would not have a
television set. They had no answer to that!

Now I am seriously considering cancelling again. At the moment I have
the full programme package (including HD but not 3D), and they have
very recently increased the monthly subscription to about £64 which is
more than I am content to pay. Freesat would suit me fine ... except
that I would be rather sorry to lose the 40 or so subscription HD
channels.

Walt (G3NYY)



For what it's worth, I have freeview and Freesat HD, the quality of SD
broadcasts off of the satellite is almost as good as HD quality.
The picture is that much sharper and clearer/better colours etc.

--
Bod

Who invited you here????

Mr Pounder

school, then happily send little Billy off to school with a microwave
transmitter
(mobile) which now needs to transmit at a much higher power a mere 2cm from
little
Billy's brain!

Except that little Billy or rather billie with be TxT'ing more often
than not...

--
Tony Sayer

In article , says...

school, then happily send little Billy off to school with a microwave
transmitter
(mobile) which now needs to transmit at a much higher power a mere 2cm from
little
Billy's brain!

Except that little Billy or rather billie with be TxT'ing more often
than not...

So it will be microwaved fingers instead, then ...?

--

Terry

On Wed, 29 Dec 2010 15:58:11 +0000, Paul Martin wrote:

Which is most odd, given that your Sky box and your Technomate are using
exactly the same datastreams off Astra 2 at 28.2°E (and 28.5°E for
Eurobird 1).

But there remains the question of whether or not upscaling is involved,
and if so, if the Technomate is doing better job at upscaling than the
$ky box?

On 29/12/2010 15:58, Paul Martin wrote:
In article ,
Walt Davidson wrote:
On Mon, 27 Dec 2010 16:54:06 +0000, Bod
wrote:

For what it's worth, I have freeview and Freesat HD, the quality of SD
broadcasts off of the satellite is almost as good as HD quality.
The picture is that much sharper and clearer/better colours etc.

Thanks. That's reassuring to know. I already have a Technomate
satellite receiver and I have noticed that the quality of SD pictures
received on that is often better than the SD pictures received on the
Sky HD+ box.

Which is most odd, given that your Sky box and your Technomate are
using exactly the same datastreams off Astra 2 at 28.2°E (and 28.5°E
for Eurobird 1).

Not really as the data stream is compressed and the picture quality will
depend upon the quality of the decoder as well as the graphics engine,
this is before we start talking 'upscaling'

"Bill Wright" wrote in message ...
Terry Casey wrote:
In article , lid says...
In metric terms this would be 3m, 1.5m, 750cm & 375cm.


Whoops!

In metric terms this would be 3m, 1.5m, 750mm & 375mm.

or ...

In metric terms this would be 3m, 1.5m, 75cm & 37.5cm.

They only use cm in junior schools don't they?
Measuring everything in mm is like saying my kitchen worktop is
1536 1/16ths of an inch.

And then there's those "single issue" sub-units like the Decileter.

--
Graham.

%Profound_observation%