Getting raw telemetry is always a challenge
I'd love to get my hands on some raw Viking, Pioneer Venus and/or Pathfinder telemetry. I have a 6-DoF code that I'd like to validate and need some flight data to do that. Unfortuantely I have no clue how to get the data. I once saw some raw Galileo Probe telemetry on the web and promptly downloaded it. I'm glad I did because that source disappeared. I think you'd be wasting your time with the radio telescope Huygens telemetry. You can't get a signal out of white noise.
Gary