James Miller G3RUH reports reception of the Rosetta spacecraft signal at a distance of 805 million km from Earth using the 20 metre dish at the Bochum amateur radio facility
Just a quick note about Rosetta X-band. I checked it this morning from Bochum.
2014 Jan 21 [Tue] 0934 utc
R 805 Million km
CNR 25.5 dB(Hz)
QRG 8421.786900 MHz at the spacecraft
Rosetta is about 14 dB weaker than Stereo A/B.
The system at Bochum has a G/T approx 40 dB(1/K).
Bertrand Pinel F5PL, located near Castelnaudary, France, 65km from Toulouse, successfully tracked Rosetta on January 21, 2014 at 10:00 UT, using a 3.5m dish antenna, see
ESA Rosetta Blog http://blogs.esa.int/rosetta/
ESA on Facebook https://www.facebook.com/EuropeanSpaceAgency