1. 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 dBW – just 1.8 Femto-Watts.
LNA is operated at C  Noise Floor kT equals -183 dBm/Hz

2. 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 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)