Astra 2E at 28.2E: General Discussion Part 1

[wolzy67]

Which channel ? There was a megawobble event earlier this evening on 2F:

Hi thanks for reply what do you think could be potential reason for this.

 

[Lazarus]

There are 351 Members and Guests viewing Satellites.co.uk right now (Plus an interminable number of Bots, Crawlers etc.), chiefly due to the 2E Topics activity.

Long may it continue!

 

[wolzy67]

AFAIK no uk PSB channels have been tranfered yet!

Hi Sorry but i wasn't implying that.
Just irregular signal deviation last night and tonight.
During peak viewing

 

[Pride Of Cucamonga]

Now, correct me if I am wrong, PE 2E and 2F footprints are slightly different 2f covers Madeira at the expense of larger size on Canary Islands while 2E does not cover Madeira but has a higher eirp in Canary Islands. On the other side Astra 2E has a higher eirp in Poland than 2F that has a more uniform power over the east european side.

Whether this is due to different dish construction, feedhorn arrangement or just SES drawing trickery remains to be seen. My money is in that the UK footprints are going to be identical hence the sidelobes, I am holding to that by now, I have been on the lucky side of 2F, it is only a couple of days to discover all the truth!!, unless ses activates other UK spot from 2E sooner.

I;m in Valencia too, but that's wishful thinking. Even if we can't get 2E, the only missing PSB channel will be BBC2; hopefully resolved with launch of BBC2 regions.

 

[Deso]

There are 351 Members and Guests viewing Satellites.co.uk right now (Plus an interminable number of Bots, Crawlers etc.), chiefly due to the 2E Topics activity.

Long may it continue!

And we have 2G to come later in the year.

 

[solly]

And we have 2G to come later in the year.

it last satellite give resolte to slot 28.2e

 

[Huevos]

Just irregular signal deviation last night and tonight.
During peak viewing

Probably your satellite dish about to drop off the wall.

 

[dvdfilm]

I;m in Valencia too, but that's wishful thinking. Even if we can't get 2E, the only missing PSB channel will be BBC2; hopefully resolved with launch of BBC2 regions.

Indeed,people will require reception of just one satellite(2E or 2F) to get at least some psb channels

 

[Menorca Man]

Agreed. The gradients of nulls and side-lobes are by their very nature immensely steep leading to highly localised effects on the ground. Most unlikely 2E's will coincide with 2F's.

Myself and quite a few others here are keeping our fingers and toes crossed that the new bird doesn't have the same steep notch over Cataluña and the Balearics!!

 

[DishDick]

12285v on 2a

I blame King of Sat as they list it as 1N.
"Astra 1N 12285.00 V 30 Pan Europe"

Thought it was strange only one worked!

 

[skomedal]

Myself and quite a few others here are keeping our fingers and toes crossed that the new bird doesn't have the same steep notch over Cataluña and the Balearics!!

Bit egoisitic that thought

How about members in the other ( northern ) fringe area.

 

[cazhh]

Hi thanks for reply what do you think could be potential reason for this.

Well. Some force acting on the satellite so that its momentum wheels can't keep the attitude stable anymore. It could be fired thrusters, some meteoride or a solar flar or something else. As soon as the 2E spotbeam will be up we can probably narrow down that list.

 

[Waveguide]

Agreed. The gradients of nulls and side-lobes are by their very nature immensely steep leading to highly localised effects on the ground. Most unlikely 2E's will coincide with 2F's.

My money is in that the UK footprints are going to be identical hence the sidelobes, I am holding to that by now, I have been on the lucky side of 2F, it is only a couple of days to discover all the truth!!, unless ses activates other UK spot from 2E sooner.

My bet is also that 2E and 2F will have almost the same antenna patterns for the UK beam.
(unless SES by design has modified the antenna)
First, the beam is someting like 5 degrees wide and is sort of wide(ish). Such antennas have
less variation and peakiness of the sidelobes. (An omnidirectional antenna has no sidelobes at all.)
Second, the manufacturing tolerances are extremly tight for satellite components. Not neccesarily as a guarantee for good functionality but as a quality indicator for the supplier and
his processes.

 

[Pride Of Cucamonga]

Myself and quite a few others here are keeping our fingers and toes crossed that the new bird doesn't have the same steep notch over Cataluña and the Balearics!!

Even if 2E is exactly the same as 2F, the nulls would shift south as 2E's UK spot transponders are at lower frequencies than 2F's. Hopefully not as far south a Valencia.

 

[cazhh]

Even if 2E is exactly the same as 2F, the nulls would shift south as 2E's UK spot transponders are at lower frequencies than 2F's. Hopefully not as far south a Valencia.

East you meant ;)

 

[cazhh]

There are 351 Members and Guests viewing Satellites.co.uk right now (Plus an interminable number of Bots, Crawlers etc.), chiefly due to the 2E Topics activity.

Long may it continue!

How many users from the SES IP address ranges ?

 

[wolzy67]

Probably your satellite dish about to drop off the wall.

Why would my dish be falling off ?

 

[cazhh]

My bet is also that 2E and 2F will have almost the same antenna patterns for the UK beam.
(unless SES by design has modified the antenna)
First, the beam is someting like 5 degrees wide and is sort of wide(ish). Such antennas have
less variation and peakiness of the sidelobes. (An omnidirectional antenna has no sidelobes at all.)
Second, the manufacturing tolerances are extremly tight for satellite components. Not neccesarily as a guarantee for good functionality but as a quality indicator for the supplier and
his processes.

I agree. The problem might be that we might have a pointing error (according to the literature that could be 0.15 degrees, which probably is the reason for the difference between summer and winter signal we saw here). Question is how much in sync 2E and 2F will be, ie how much external forces have an influence on that pointing error.

 

[solly]

I agree. The problem might be that we might have a pointing error (according to the literature that could be 0.15 degrees, which probably is the reason for the difference between summer and winter signal we saw here). Question is how much in sync 2E and 2F will be, ie how much external forces have an influence on that pointing error.

what i ask
if astra 2e
it live move left from astra 1n
?

 

[skomedal]

We in the fringes live in hope that any NULLS miss our location.

Personally I look forward to the UK PSB transition to whatever SAT then we know the true picture ( or not )