Mars Science Laboratory - Curiosity
Launched on the 26th November 2011 and arrived at Mars on the 6th August 2012. The Curiosity Rover High Gain Antenna is 25.5dB gain with 15 watts of power at 8401.419752MHz. The Descent Stage uses a Medium Gain Antenna with 19.2dB gain and same power / frequency supplied by waveguide from the rover.
Signals detected from MSL on the 26th November 2011. The sinusoidal wobble is caused by the spacecraft rolling during the cruise phase.