DECT interference
 

Bill Wright wrote:
Nick Le Lievre wrote:
Just been round to me mams she has a Sky HD box the below channels
breakup;

188 True Ent
321 True Movies 1
322 True Movies 2
365 Chart Show TV
366 The Vault
367 Flava
372 Bliss
374 Scuzz
376 DanceNationTV
382 NME TV
616 POP
617 Tiny POP
625 Tiny POP +1
626 POPGirl
627 Kix!
629 POPGirl +1

Signal is at 100% Quality at 80% on all the above channels, because
there are so few is it dish alignment or something else.
Someone else who has to do with Sky boxes than me might correct me here,
but I was under the impression that the quality and strength reading
does not relate specifically to the channel the box had been on before
the menu button had been pressed.
It is quite normal for Sky boxes to display impressive quality and
strength readings, yet have missing channels. All the channels you list
except one are on the same transponder, which suggests any or all of the
following, assuming you have given a full list:
Faulty receiver (unlikely because if it was that you'd be reporting
channels on the same satellite IF but other muxes)
Terrestrial microwave interference (unlikely because if it was that
you'd probably be reporting channels on the same satellite IF but other
muxes)
Faulty LNB. I had a problem job a few weeks ago which turned out to be
the LNB's noise peaking on a particular frequency, and this was on one
of the four modes only.


Another known cause of specific transponder
interference is a DECT base station installed too
close to the cable or receiver. In fact, that
transponder frequency (11642 MHz) downconverts to 1892
MHz on the cable from the LNB to receiver - right in
the middle of the DECT band.
http://www.techwatch.co.uk/forums/72...reception.html

Move the DECT phone base and the problem should be solved.

DECT interference
 

Jim wrote:

Another known cause of specific transponder interference is a DECT base
station installed too close to the cable or receiver. In fact, that
transponder frequency (11642 MHz) downconverts to 1892 MHz on the cable
from the LNB to receiver - right in the middle of the DECT band.
http://www.techwatch.co.uk/forums/72...reception.html


Move the DECT phone base and the problem should be solved.

Oh I must be going mad! I had a problem with this only a few weeks ago
and yet I forgot all about it when answering this OP.

The job a few weeks ago had the phone right at the other side of the
room to the sat box.

Bill

DECT interference
 

On Tue, 16 Nov 2010 15:19:44 +0000, Bill Wright
wrote:

Jim wrote:

Another known cause of specific transponder interference is a DECT base
station installed too close to the cable or receiver. In fact, that
transponder frequency (11642 MHz) downconverts to 1892 MHz on the cable
from the LNB to receiver - right in the middle of the DECT band.
http://www.techwatch.co.uk/forums/72...reception.html


Move the DECT phone base and the problem should be solved.

Oh I must be going mad! I had a problem with this only a few weeks ago
and yet I forgot all about it when answering this OP.

The job a few weeks ago had the phone right at the other side of the
room to the sat box.

Bill

I have a new Panasonic phone which has the base station as part of a
corded phone and DECT cordeless extensions. One of these sits right
next to a PURE DAB radio. My wife has just commented that when the
phone rings, the DAB radio mutes. The sound comes back on as soon as
the phone is answered. I think that she thought this was some sort of
clever design feature!

DECT interference
 

ChrisW wrote:
On Tue, 16 Nov 2010 15:19:44 +0000, Bill Wright
wrote:

Jim wrote:

Another known cause of specific transponder interference is a DECT base
station installed too close to the cable or receiver. In fact, that
transponder frequency (11642 MHz) downconverts to 1892 MHz on the cable
from the LNB to receiver - right in the middle of the DECT band.
http://www.techwatch.co.uk/forums/72...reception.html


Move the DECT phone base and the problem should be solved.
Oh I must be going mad! I had a problem with this only a few weeks ago
and yet I forgot all about it when answering this OP.

The job a few weeks ago had the phone right at the other side of the
room to the sat box.

Bill

I have a new Panasonic phone which has the base station as part of a
corded phone and DECT cordeless extensions. One of these sits right
next to a PURE DAB radio. My wife has just commented that when the
phone rings, the DAB radio mutes. The sound comes back on as soon as
the phone is answered. I think that she thought this was some sort of
clever design feature!

It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.

Bill

DECT interference
 

On Wed, 17 Nov 2010 02:24:23 +0000, Bill Wright wrote:


It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.

Never mind - you'll forget about it soon...


--
Geo

DECT interference
 

Geo wrote:
On Wed, 17 Nov 2010 02:24:23 +0000, Bill Wright wrote:


It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.

Never mind - you'll forget about it soon...


Oh dear...

Bill

It is DECT interference
 

"Bill Wright" wrote in message
...
Geo wrote:
On Wed, 17 Nov 2010 02:24:23 +0000, Bill Wright wrote:


It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.

Never mind - you'll forget about it soon...
Oh dear..

I just want to say thanks for the heads up about DECT phones. My mother has
a cordless phone on top of the TV stand in close proximity to the Satellite
receiver and today I finally got round to testing whether this was causing
the breakup on the channels listed. Essentially it was, I unplugged it and
the picture was clear, plugged it back in and it began breaking up. We are
going to leave the phone there as we do not watch the few channels which it
affects but it seems to affect all types of Satellite receiver as I remember
having the problem with a normal Sky box, a Freesat HD box and the current
Samsung Sky + HD Box.

Once again thanks, saved a call out to the Satellite engineers responsible
for the maintenance of the system and have finally got to the bottom of the
problem. I had never heard of DECT interference before and did not even know
my mothers phone was a DECT phone.

It is DECT interference
 

In article , Nick Le Lievre nicklelievr
lid scribeth thus
"Bill Wright" wrote in message
...
Geo wrote:
On Wed, 17 Nov 2010 02:24:23 +0000, Bill Wright wrote:


It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.

Never mind - you'll forget about it soon...
Oh dear..

I just want to say thanks for the heads up about DECT phones. My mother has
a cordless phone on top of the TV stand in close proximity to the Satellite
receiver and today I finally got round to testing whether this was causing
the breakup on the channels listed. Essentially it was, I unplugged it and
the picture was clear, plugged it back in and it began breaking up.

So this wasn't actually in use making a call then?..


We are
going to leave the phone there as we do not watch the few channels which it
affects but it seems to affect all types of Satellite receiver as I remember
having the problem with a normal Sky box, a Freesat HD box and the current
Samsung Sky + HD Box.

Once again thanks, saved a call out to the Satellite engineers responsible
for the maintenance of the system and have finally got to the bottom of the
problem. I had never heard of DECT interference before and did not even know
my mothers phone was a DECT phone.


--
Tony Sayer

It is DECT interference
 

tony sayer wrote:
In article , Nick Le Lievre nicklelievr
lid scribeth thus
"Bill Wright" wrote in message
...
Geo wrote:
On Wed, 17 Nov 2010 02:24:23 +0000, Bill Wright wrote:


It's funny how some things bother you isn't it? I was really mad with
myself for forgetting about DECT phones.
Never mind - you'll forget about it soon...
Oh dear..
I just want to say thanks for the heads up about DECT phones. My mother has
a cordless phone on top of the TV stand in close proximity to the Satellite
receiver and today I finally got round to testing whether this was causing
the breakup on the channels listed. Essentially it was, I unplugged it and
the picture was clear, plugged it back in and it began breaking up.

So this wasn't actually in use making a call then?..

My understanding is that some DECT bases transmit all the time.

Bill

It is DECT interference
 

"Bill Wright" wrote in message
...

So this wasn't actually in use making a call then?..

My understanding is that some DECT bases transmit all the time.

To confirm, yes the phone/base station was not actually in use just plugged
in and switched on. Switched off at the mains the picture immediately
cleared up.