Hacker News Reader

Also, the exact uplink and downlink frequencies are not published.

https://voyager.gsfc.nasa.gov/Library/DeepCommo_Chapter3--14... seems to include pretty specific up/down carrier frequencies and channels used.

I wonder why the frequency was redacted in this tweet.

Maybe they're hiding the current Doppler shift? Or just trying to prevent noise from randos experimenting in that range?

They removed the frequencies from some of the more popular sites. That started during early stages of the Ukraine invasion.

But it's still super easy to find them.

Usually it takes a few hours until the sat ham guys find them and post spectrums.

The frequencies of most research satellites are all well known. But it takes more than 30 seconds of Googling.