Express AM7 (40.0° E)

Analoguesat · Mar 31, 2015

Thats Turksat 3A @ 42E ponti.

3A west beam

pontiend · Mar 31, 2015

Thought that it must be wrong.
Never thought of 42E.

tempo · Mar 31, 2015

Since nobody has frequency plan of Express AM7, I guess it will be copy of AM4 for C-band and Ka-band, and copy of AM6 for Ku-band.
http://frequencyplansatellites.altervista.org/Express/Express_AM4.pdf
http://frequencyplansatellites.altervista.org/Express/Express_AM6.pdf

hvdh · Mar 31, 2015

It will be a bit different, but thanks to your and Marcus' checks soon we will find out!
What we know: 24 C-band and 36 Ku-band transponders (plus 2 L-band).

Express AM7 has no Ka-band.

In C-band, you and Marcus reported 3825, that could mean 24 * 40 MHz transponders in 3600...4.200 range.

In Ku-band, you found 12730, that could mean 12 * 36 MHz transponders in 12.5...12.75 range.

There are 24 transponders left, if they are also 36 MHz they would fit 10.95...11.2 and 11.45...11.7 perfectly!
It would be nice if they used 10.7...10.95 and 11.2...11.45 instead, but that's just my wishful thinking...
Like before with Express AM1, receiving AM7 Ku-band in Europe will be a challenge.

Marcus_21 · Mar 31, 2015

From the information I have, has 80 Txp...
C-Band: 30 for 40 Mhz on three beam, Global, Fixed 1 (Russia) and Steerable.
Ku-Band: 48 for 36 Mhz on three beam, Fixed 1 (Russia), Fixed 2 (Europe) and Steerable
L-Band: 2, Navigation payload

Vipersan · Mar 31, 2015

I'm just hoping for something...ANYTHING from this bird in Cband ..
this part of the arc is pretty much empty for me in C band
;)

hvdh · Mar 31, 2015

I hope you're right Marcus_21. The counts I found were as mentioned by Tsenki, Airbus and (repeated probably) by Gunter's.
What source is your count from?

Edit: indeed here increased transponder count:
http://mapgroup.com.ua/kosmicheskie-apparaty/27-rossiya/1215-ekspress-am7

Vs, sure you'll get C-band, I'll wish for strong transponders like before with AM1!

Marcus_21 · Mar 31, 2015

Taken from an official document....

tempo · Apr 1, 2015

From that document:
C-band = 24 TPs (30 in the start of satellite's lifetime)
Ku-band = 40 TPs (48 in the start of satellite's lifetime)
So part of TPs are just for reserve purposes and will be used if main TPs will be brocken, with the same frequencies.

tempo · Apr 1, 2015

Today they started full C-band test.
Test carriers 3475R, 3525R and 3575R (active at the moment)

hvdh · Apr 1, 2015

This is surprising, wouldn't have thought a new satellite would still use 3.4...3.6 GHz that mobile broadband operators are pushing for (WiMAX) and will cause a battle during next WRC-15. Russia will not use it (I hope)?
http://spacenews.com/satellite-operators-told-to-take-half-a-loaf-of-c-band/

tempo · Apr 1, 2015

I'm not interesting inWiMAX, but as far as I know, the future of 3.4...3.6 GHz subband in Russia is the same unknown as in Europe. I already have interferense signals on 3421 MHz and 3546 MHz, can be seen on my C-band spectrums.

BTW, test carrier 3625R active right now.

Marcus_21 · Apr 1, 2015

Test carrier 3475 R, 3525 R, 3575 R and 3625 R

tempo · Apr 1, 2015

Test carrier 3675 R

Marcus_21 · Apr 1, 2015

3675 R

Anonymous_1 · Apr 1, 2015

tempo said:
Test carrier 3675 R

Strong

william-1 · Apr 2, 2015

http://www.flysat.com/expressam7.php

Looking good so far,
Ku band test carriers have started,

CERIN · Apr 2, 2015

Здравствуйте
Наблюдал - 3975 R - время Московское - 12: 09
3925 R - время Московское - 08: 51

hello Watched - 3975 R - Moscow time - 12: 09 3925 R - Moscow time - 08 : 51

Mod note,
Please use English translation.

tempo · Apr 2, 2015

Test carriers 3725 R, 3775 R, 3875 R, 3925 R, 3975 R, 3825 R

william-1 · Apr 2, 2015

*Please note, 2 sample spot beams are shown for both Ku & C-Band. Once launched, there will be only one Ku & one C-Band spot beam, which will be positioned according to demand.

http://www.earthlyorbit.com/express-am7-pre-launch-footprints/

I wonder which spot beams it will be ? North East Africa v South Africa for Ku band & West Africa v South Africa for the C band steerable spot beams.

Express AM7 (40.0° E)

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