@karthikeyan's excellent answer links to The Rotation and Interior Structure Experiment on the InSight Mission to Mars (Folkner, W.M., Dehant, V., Le Maistre, S. et al. Space Sci Rev (2018) 214: 100. https://doi.org/10.1007/s11214-018-0530-5), and includes this image from there.
Question: Are there any preliminary results from Mars lander InSight's RISE antennas? Have they been at least tested yet? If so, what did they transmit and/or receive?
Related: 3D celestial puzzler; why InSight's two RISE horns point slightly south of east, and north of west?