EL053B

Session: Oct 2015 (session 3)

Wavelength: 3.6 cm

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Zelenchukskaya (Lysenkova M. at Sun Oct 25 15:11:45 2015) Success:

Svetloe (Stepanova I. at Sun Oct 25 15:12:03 2015) Success:

Onsala (Jun Yang at Mon Oct 26 07:19:55 2015) Success:

Onsala (Jun Yang at Mon Oct 26 07:20:04 2015) Success:

Onsala (Jun Yang at Mon Oct 26 07:20:28 2015) Success:

Onsala (Jun Yang at Mon Oct 26 07:20:59 2015) Success:

Onsala (Jun Yang at Mon Oct 26 07:21:33 2015) Success:

The 1-second interval of snap file was used as RadioAstron moved closer to the Earth. The tracking error was <10 arcsecond, at the quite good level. The RadioAstron signal was about 50 dB higher than our noise floor on the monitor of our HP spectrum analyzer.

Onsala (Jun Yang at Mon Oct 26 07:21:51 2015) Success:

Comparing with the previous EL053A, it was about 4 dB stronger. Again, a 10dB attenuator was used. Moreover, the DBBC2 gain was locked to a high account 45000 (normally 38000). The DBBC2 worked OK after the adjustment. No Tsys data were available as the antenna was not under the control of the FS computer.

Effelsberg (Uwe at Mon Oct 26 15:47:23 2015) Success:

Again a bit off from the true satellite position, but signal was still visible. Satellite tracking is new for Effelsberg and the procedure in the control system needs some improvement. Will be done soon.