News Nov. 2014 TX power of Rosetta is 28 W using a antenna dish sized 1.8 m The effective isotropic radiated power from Rosetta (HGA in X-Band) is 57 dBW.

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News Nov. 2014 TX power of Rosetta is 28 W using a antenna dish sized 1.8 m The effective isotropic radiated power from Rosetta (HGA in X-Band) is 57 dBW At Rosetta’s current distance (2.7AU), the received power will be -225 dBW ESA’s New Norcia 35m station as a reference, and thanks to its 1000m2 antenna collecting surface and gain of 68 dBi Rosetta’s weak signal is captured and results in a received power of -157 dBW – just 1.8 Femto-Watts. LNA is operated at -2600 C  Noise Floor kT equals -183 dBm/Hz

News Nov. 2014 100 kHz/Div ©Bertrand Pinel, setileague.org Rosetta is presently sending signals to the ground stations at about 28 Kbps X-Band 8.421 GHz. Downlink telemetry commands 2 kbit/s, Instrument data 26 kbit/s with a square wave subcarrier of 260 kHz which is BPSK modulated Command telemetry: PM with a square wave subcarrier of 16 kHz which is BPSK modulated (high Doppler resistant)