Astra 2F Testing Reception Reports

[satesco]

V; 12460H. Thus, it can be assumed that ASTRA 2F is capable of transmitting signal in this bands:
11700-12100MHz (Band E)
12100-12500MHz (Band F)

It seems that SES is considering transmitting signal even in 12500-12750 Mhz.band!A frequency has been activated at 12,591 V.I found it this morning:

ps_I'm not sure but I think it's signal at 12518 H , 12539 H.In my area the signal is weak in these frequencies.

 

[park_gate]

Frequency reuse will be on the spot beams UK and WEST AFRICA which are 3500km apart so no problem there

Isn't Tenerife slightly nearer West Africa than the UK?

So how can you say no problem?

My main interest is in the Costa Blanca and after looking at the footprints of the West African beam and the Arab beams and considering the angle of the dish at the satellite it seemed unlikely it would cause a problem in the Costa Blanca. But that is pure speculation on my part as we are talking about the performance of the dishes outside there published footprints.

I note on the official UK spot footprint the signal compared to 1N has been "tweaked" to give a stronger signal in the south east of England. Could they be worried about interference from the West Africa beam?

Terry

 

[Huevos]

the official UK spot footprint the signal compared to 1N has been "tweaked" to give a stronger signal in the south east of England. Could they be worried about interference from the West Africa beam?

You are joking, right?

 

[strs65]

It seems that SES is considering transmitting signal even in 12500-12750 Mhz.band!A frequency has been activated at 12,591 V.I found it this morning:

ps_I'm not sure but I think it's signal at 12518 H , 12539 H.In my area the signal is weak in these frequencies.

This is what I get now, a signal at 12590V, and maybe there is a weak signal at 12518V

 

[Huevos]

it appears to me from some of the test signals, it wasnt until i re read each post from solly and others i noticed the pattern as suggestion frequency reuse and it appears like it can be very effective maybe that why they didnt mind about the spot beam

Frequency reuse across they entire spectrum is a fantasy. First they need customers for all those spot beams. Then they need enough upload bandwidth, and this is not subject to reuse. So if they frequency reuse the entire spectrum on 4 or 5 beams as some people might have you believe they would need 5 times the uplink bandwidth, and that just isn't there, not even double, which is only enough to run 2 beams. And then, even when there is some reuse, the beams need to be far enough apart to not cause any interference to one another, and that's going to mean a good 1000km between beam centres, or probably more. And they're certainly not going to be reuse any transponder in the PE beam catchment area because the intended audience would be the same.

 

[andrewcrawford]

Frequency reuse across they entire spectrum is a fantasy. First they need customers for all those spot beams. Then they need enough upload bandwidth, and this is not subject to reuse. So if they frequency reuse the entire spectrum on 4 or 5 beams as some people might have you believe they would need 5 times the uplink bandwidth, and that just isn't there, not even double, which is only enough to run 2 beams. And then, even when there is some reuse, the beams need to be far enough apart to not cause any interference to one another, and that's going to mean a good 1000km between beam centres, or probably more. And they're certainly not going to be reuse any transponder in the PE beam catchment area because the intended audience would be the same.

i mean current tests are suggesting there testing frequency reuse i cant be sure they will use it commerical operations, nor can i be sure what beams there using it on but it seems like that is what there doing in tests jus tnow

 

[satesco]

Hi Huevos,
I believe also that SES do tests for the whole band.They actually check all the signal carriers.Don't even need to use all the transponders.In the dispute with Eutelsat they are prepared to use this position in case they win.

 

[welshman234]

What I an curious about is why does SES bother with pan european beams at all if the target audience is in a limited geographical area......... there are 2 possible explanations 1. Sky says in covert corridor discussions that they have lots of expat viewers and SES obliges with PE footprints or 2. if they need say 2E somewhere else in the future a large enough beam is there to cover a large area ie eastern europe Russia etc.

AS for frequency reuse I see Huevos point theres no point putting say tart on a sofa type programmes on the one hand on the pan european beam at the same frequency as BBC1 as there may be people in the UK who want to watch both on the same frequency (why????).....if that makes sense.

 

[Huevos]

i mean current tests are suggesting there testing frequency reuse

There are no frequency reuse tests. They are just testing different beams. Why do frequency reuse at the testing stage when you've got the whole spectrum to play with?

 

[Huevos]

why does SES bother with pan european beams at all if the target audience is in a limited geographical area.

Well for one, the satellite has to be future proof. Also, PE means a channel can be used for multiple audiences. For example say Sky are transmitting National Geographic, that channel could be viewed by their subscribers in the UK, Germany and Italy under different encryption systems. That means 1 channel, 1 transponder, 1 beam, 3 audiences, rather than 1 channel, 3 transponders, 3 spot beams, 3 audiences as it would be with frequency reuse. I know which one looks more cost effective (to me at least). And this isn't some future fantasy, it's today's reality, just look on 1W for plenty of examples.

 

[andrewcrawford]

There are no frequency reuse tests. They are just testing different beams. Why do frequency reuse at the testing stage when you've got the whole spectrum to play with?

if that is the case then they must be able to steer the spotbeams

 

[Huevos]

if that is the case then they must be able to steer the spotbeams

Well it would be a major flaw if they couldn't as the satellite would only ever be able to be used to its full potencial in one role.

 

[andrewcrawford]

Well it would be a major flaw if they couldn't as the satellite would only ever be able to be used to its full potencial in one role.

i always thought the spots where supposed to be fixed as the spots are intended for it wokring life not dying years being used to get more out of it before it dies

but it could still be rfequency reuse at the end of the day its tests

 

[park_gate]

You are joking, right?

Which part of my post do you think is a joke and why?

I take it from your post you think there is no chance of overspill from the West African beam and the UK.

How can you say this with such certainty?

As I understand it this is a new beam and we have no experence of what will happen.

Terry

 

[park_gate]

Frequency reuse across they entire spectrum is a fantasy.<snip>

I don't believe anyone is suggesting this.

All they need do is reuse the frequencies for BBC and ITV to cause major disruption.

Are you saying they can't do this?

Terry

 

[andrewcrawford]

I don't believe anyone is suggesting this.

All they need do is reuse the frequencies for BBC and ITV to cause major disruption.

Are you saying they can't do this?

Terry

that is what i was meaning only handful of frequency not them all but ui do think thefe tyesting it for future deployment

 

[TENERIFEFORUMTV]

Isn't Tenerife slightly nearer West Africa than the UK?

So how can you say no problem?

My main interest is in the Costa Blanca and after looking at the footprints of the West African beam and the Arab beams and considering the angle of the dish at the satellite it seemed unlikely it would cause a problem in the Costa Blanca. But that is pure speculation on my part as we are talking about the performance of the dishes outside there published footprints.

I note on the official UK spot footprint the signal compared to 1N has been "tweaked" to give a stronger signal in the south east of England. Could they be worried about interference from the West Africa beam?

Terry

sorry i was talking about everyone else going on about FRU inside europe HERE it will be A MAJOR PROBLEM as UK BEAM is 3000km AWAY but DAKAR (1m dish required) is only 1500km away on the WEST AFRICA BEAM
so.... unless they are not going to use the freqs. they use now ´´2d´´ ones on the UK BEAM the ONLY totally safe freqs for the WEST AFRICA BEAM is the ´´2d´´ ones ...someone was going on about E28A freq being re-used .that wont work as you only need a 1m dish here for that satellite

 

[TENERIFEFORUMTV]

Which part of my post do you think is a joke and why?

I take it from your post you think there is no chance of overspill from the West African beam and the UK.

How can you say this with such certainty?

As understand it this is a new beam and we have no experence of what will happen.

Terry

BECAUSE the distance between the two is Land's End to John o' Groats to Land's End to John o' Groats to birmingham

 

[solly]

12516h
12580h
12551h
12725h
11675h
11623h
11193v
11055h
11191h

 

[Pietclock]

new strong analogue black screen carrier on 11030H right now !
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