Astra 2F Testing Reception Reports

[BlindFaith]

/edit
11450H/V could be home made.

11450-9750=1700
1700+10600=12300

spurious frequency 12300 was already reported by me. What is at 1700MHz?

 

[hvdh]

Not the slightest hint of a signal on 11448.

However let me add the frequencies that were used for telemetry during the LEOP of Astra 2F: 11452, 11711.5 and 12491 MHz (see several documents on licensing.fcc.gov). Nothing here either.

 

[gonzobaby]

again a short proof that the bird is on the route. Both pictures are recorded today at 09:00 p.m UTC

First 40.2E (position checked from my side at 06:15 p.m. UTC) -> -47,3 dBm



Now the sat is on exactly 40.0E -> -47,1 dBm

 

[Huevos]

again a short proof that the bird is on the route. Both pictures are recorded today at 09:00 p.m UTC

First 40.2E (position checked from my side at 06:15 p.m. UTC) -> -47,3 dBm

View attachment 50352

Now the sat is on exactly 40.0E -> -47,1 dBm

View attachment 50354

Well that's about 1.75º/day over that period. If that motion were linear over a 24 hour period that mean the satellite would make the journey in less than 9 days, 2 of which have already elapsed.

 

[Llew]

Now, if the freqs/TPs change when she is moving, it could be so as not to wipe out any other birds but on the other hand it could be that SES are trying something new

As I suggested earlier, AFAIK there aren't any working TP's on that frequency on any satellites likely to be within the range of the intended arc travel of 2F, so it could well keep on the present frequency.

 

[hvdh]

/edit
11450H/V could be home made.

11450-9750=1700
1700+10600=12300

spurious frequency 12300 was already reported by me. What is at 1700MHz?

1690...1710 MHz shouldn't be a trouble area, with just meteo satellites, and GSM begins at 1710 MHz.
But there are video transmitters available for 1700 MHz, meant for US market or simply illegally using these quiet frequencies.
How does the spectrum and/or constellation diagram look? Maybe an analog receiver shows video.
Replace the LNB with a short piece of wire at the coax centre conductor, and a world of interference will open up!

 

[Cala d'or]

Made a timeline, assuming 1.2 deg/day, and looking at this board's reports
(times in UTC)
8 Nov 14:16: TLE has Astra 2F stable on 43.5 East
8 Nov afternoon: still testing (Solly, BlindFaith, Huevos)
8 Nov evening: start of drift
9 Nov 00:00: 43.2 East
9 Nov afternoon: Huevos 11630...11670 & 12498 --> 1880...1920 & 1898 MHz --> DECT telephones
10 Nov 00:00: 42.0 East
10 Nov afternoon: Huevos 116xx --> DECT
11 Nov 00:00: 40.8 East
12 Nov 12:00: 39.0 East
15 Nov 00:00: 36.0 East
17 Nov 12:00: 33.0 East
19 Nov 12:00: 30.6 East
21 Nov 12:00: 28.2 East
To be taken with a grain of salt, & Huevos please no offense!

According to 1 sat tracking site , 2F now has a longitude of 38.6
I presume that it is definitely moving, is this correct ?

 

[BlindFaith]

yep, that's correct. Though it's difficult to evaluate the exact speed..

 

[Llew]

Within Hellasat 39E territory now -

 

[solly]

the signal no much strong but it move west fast 1.60 deg

 

[Analoguesat]

The tle's on n2yo have caught up - 2F's location was over the Somali coast yesterday - shes now over Kenya

-http://www.n2yo.com/?s=38778

 

[gonzobaby]

confirm actual 38.6°E

 

[hvdh]

With this TLE #41 from n2yo (it's not yet on Celestrak), arrival at 28.2 East on 21 Nov at 07:00 UTC.

 

[Huevos]

Food for thought...

I was trying to get an idea how Solly and Satesco managed to get the spotbeam so far east, so I wrote a program to draw footprint maps. The maps are for a conventional parabola aerial, circular not shaped beam, but are still interesting. Just enter a location for beam centre and the orbital slot and the program draws a map, based solely on maths, not art.

Three lines, blue = 0.5º off axis, green = 1.0º off axis, and red = 1.5º off axis.

Three maps.
1) slotted at 28.2E and pointing at central UK (Birmingham);

2) slotted at 43.5E and pointing at central UK;

3) slotted at 43.5E and pointing 15º east of the central UK.


Just a bit of fun while waiting for 2F to arrive at 28E, so please don't take this too seriously.

BTW, if anyone wants any other scenario mapped just post the orbital slot and the location of the beam centre (as long as it is Europe).

 

[solly]

it look footpint gows more west when satellite arrive to 28.2e
on 43.5e low band i see litel strong peak more 1.5 db
i got emil interesting sat calculator web site
"
Hi !

According to tracking data the ASTRA 2F is now positioned at 38.5 E moving west
1.25degrees/day. It is located 100km outside the clarke belt. Unfortunatly there is a delay in the published tracking data.

United States Strategic Command/NORAD released new trackingdata today but the tracking measurements was actually done on at Sat Nov 10 2012 22:22:36 UTC. This means for sure that the ASTRA 2F satellite for sure was moving on Saturday. Based on current movement of 1.25deg/day ASTRA 2F has most likely been moving since Tuesday 12'th of November.

You can see the current drift rate of 1.255 deg/day west "

 

[welshman234]

Food for thought...

I was trying to get an idea how Solly and Satesco managed to get the spotbeam so far east, so I wrote a program to draw footprint maps. The maps are for a conventional parabola aerial, circular not shaped beam, but are still interesting. Just enter a location for beam centre and the orbital slot and the program draws a map, based solely on maths, not art.

Three lines, blue = 0.5º off axis, green = 1.0º off axis, and red = 1.5º off axis.

Three maps.
1) slotted at 28.2E and pointing at central UK (Birmingham);
View attachment 50369
2) slotted at 43.5E and pointing at central UK;
View attachment 50370
3) slotted at 43.5E and pointing 15º east of the central UK.
View attachment 50371

Just a bit of fun while waiting for 2F to arrive at 28E, so please don't take this too seriously.

BTW, if anyone wants any other scenario mapped just post the orbital slot and the location of the beam centre (as long as it is Europe).

Just posted these diagrams on the website pensioners in Tenerife- how to get uk tv -expect a backlash soon!!!!!!

 

[buckshee]

You can see the current drift rate of 1.255 deg/day west "

1.255 deg/day west equates to 12 days in my book from departure.
20th - 21st Nice work boys

 

[hvdh]

This morning brings already TLE #42, epoche of yesterday 12 Nov 15:23 UTC, with Astra 2F then at 38.7º East.
Arrival at 28.2 East on 21 Nov at 04:00 UTC.

 

[Huevos]

Just posted these diagrams on the website pensioners in Tenerife- how to get uk tv -expect a backlash soon!!!!!!

Where is that?

 

[BlindFaith]

ATM at about 37.5E