The communication bands (X- and S-band, which are the microwave range) are pretty well regulated, so they aren't that noisy, relative to other bands. And on th

The communication bands (X- and S-band, which are the microwave range) are pretty well regulated, so they aren't that noisy, relative to other bands. And on the receiving end, we have decent arrays of antennas to pick up the signals. Here's a nifty document detailing the coms of Voyager: https://voyager.gsfc.nasa.gov/Library/DeepCommo_Chapter3--141029.pdf https://voyager.gsfc.nasa.gov/Library/DeepCommo_Chapter3--14... Fig 3-4 on page 46 (page 10 in the document) shows the signal flow.