"plasma noise"?
It was my belief that the initial lander signal loss upon re-entry was due not to it being overwhelmed by "plasma noise", but rather to the plasma blocking signal propagation. A quick web search reveals a paper from the 1960s discussing ways to overcome the plasma blackout which suggests that the main issue is that the plasma strongly *refracts* radio signals so they do not reach the ground.
Any commentards have actual knowledge about this?