Why are they switching analogue off?

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#1
Fair enough, digital is good and all that. Clear picture, more channels. But why are they switching the analogue signal off? :confused

Surely we need the aerial to work to get the digital signal? :D
 

Analoguesat

Administrator
Staff member
Messages
45,684
Likes
8,350
Location
Scottish Borders
My Satellite Setup
TM 5402HD
Skybox F3
Sky+ UK.
My Location
Scottish Borders
#2
1) much of the capacity used by the analogue signals will be sold off for other purposes - The government has its beady eyes on the oodles of squids that may come their way in the "digital dividend"

2) the bits not sold off are needed for the new improved clearer digital services - which will soon be ruined by mulitiplex owners squashing more and more channels in to make a few more squid from their muxes..
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,698
Likes
1,286
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#3
Saturlight said:
Surely we need the aerial to work to get the digital signal? :D
Now that bit confuses me. :confused
 

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#4
rolfw said:
Now that bit confuses me. :confused
If that confuses you, then I know something's not right.
 

Lancelot

Specialist Contributor
Messages
3,638
Likes
8
My Satellite Setup
SS1.
125cm Gibbi with Channelmaster feedhorn and Inverto C120 twin.
36v H to H 62E - 61.5W
My Location
South central
#5
They're not switching the carriers off, just the analogue signal .
(think that's what you meant).


L.:)
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,698
Likes
1,286
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#6
I was more confused with what that question meant. ;)
 

Analoguesat

Administrator
Staff member
Messages
45,684
Likes
8,350
Location
Scottish Borders
My Satellite Setup
TM 5402HD
Skybox F3
Sky+ UK.
My Location
Scottish Borders
#7
Seeing as most of the transmitters are being replaced the carriers will be going off as well at some point :D
 

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#8
And we come back to TV through the mains again. ;)
 

2cvbloke

Bulbs need shelter too...
Messages
9,430
Likes
1,707
My Satellite Setup
No satellite stuff for the moment (aside from a 43cm minidish that was on the house already), Samsung SyncMaster T27B550 Smart TV & Monitor, and a few computers...
My Location
Near Pontop Pike, Co. Durham
#9
I think what saturlight meant, is how the heck are we to align our aerials without an analogue signal to go off??? :D
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,698
Likes
1,286
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#10
The same way we do with digital satellite. :)

With a £2,000 spectrum analyser. :-lmao :-rofl2
 

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#11
What I meant, without ANY ANALOGUE signal, how can you get a digital signal.

It's like milking a cow for milk, and you're pulling the farmer's udders instead.
 

PaulR

Dazed and Confused Admin
Staff member
Messages
15,777
Likes
3,128
My Satellite Setup
-----------See sig-----------
My Location
Wirral, NW UK and Vaucluse, France.
#12
Saturlight said:
What I meant, without ANY ANALOGUE signal, how can you get a digital signal.

It's like milking a cow for milk, and you're pulling the farmer's udders instead.
Whoa, shaky analogy.

Both digital and analogue signals are radio signals and both are transmitted from a big mast , usually on a mountain. Radio waves are collected by the aerial and sent down the coaxial lead where they are then processed by your receiver - be it analogue or digital.
 

Llew

cerca trova...
Staff member
Messages
14,464
Likes
3,403
My Satellite Setup
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
#13
Saturlight said:
What I meant, without ANY ANALOGUE signal, how can you get a digital signal.
With a digital receiver :-doh2

They have a brilliant invention - a menu for finding your muxes :-rofl2

Llew
 

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#14
Llew said:
With a digital receiver :-doh2
:confused Yes, and...LOL. Are we speaking the same language here? LOL. :D :D
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,698
Likes
1,286
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#15
Ah I get it now, it was a hair splitting question. :-deadhorse
 

Saturlight

Regular Member
Messages
1,197
Likes
0
My Satellite Setup
Motorised dish, dvd players and recorders; a freeview box, broadband, VCRs, four TVs, mobiles, pcs, a mac, Ipod, digital cameras...the lot!
My Location
North Tyneside
#16
No it wasn't. It was a genuine question... :(
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,698
Likes
1,286
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#17
OK sorry, but it was beginning to sound that way. :)

The digital signals are modulated onto a carrier wave. Whether the neighbouring analogue channels are there or not, makes no difference to being able to find the digital multiplexes, they are transmitted on their own carrier waves, what is received at the user end is a digital datastream.

As far as I know and I'm not theoretically knowledgable, a carrier wave is neither analogue nor digital until it is modulated. I'd be interested to hear whether that is actually the case. :)
 

Llew

cerca trova...
Staff member
Messages
14,464
Likes
3,403
My Satellite Setup
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
#18
It's analogue - that's why I can see the digital muxes on my analogue spectrum analyser display :)

Llew
 

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
25,153
Likes
5,608
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
#19
rolfw said:
As far as I know and I'm not theoretically knowledgable, a carrier wave is neither analogue nor digital until it is modulated. I'd be interested to hear whether that is actually the case. :)

There are suppressed carrier systems in analogue transmissions, requiring a receiver based beat oscillator, and (as far as I got before leaving the learning curve) digital radio communication - spectrum and ultra wide band - as there is no conventional carrier wave.
COFDM will also be a reduced or null carrier system for HDTV if it isnt already.

As to the original question - beats me, though I am under the suspicion that digital TV by its integration with the receiving box (and how it understands the protocol in the signal), is the beginning of regionalising content, what you are not supposed to have, you wont get, regardless of the array you have on the roof.
The government will happily sell to the highest bidder, so your box may be set up only to get content from one provider (not that it would ever happen in this day and age with monopolies commmissions and all that).

Think yourself lucky this country has a multitude of satellite companies all competing for the space that is up there. :eek:
 

moosegoose

bog standard
Messages
296
Likes
0
My Satellite Setup
80 cm dish hh motor teco tm1000 dreambox 7020
cas 3interface
dragon cam.promax tv explorer 2.
My Location
norwich
#20
why dont they use vertical and horizontal polirisations on the same transmiters . or is this the plan when analouge is turned off.
 
Top