I don't know.
STL comms has the advantage that it's easy to compare timestamps on the signals and get an accurate position. When Earth is 2 light minutes behind you, Mars is 3 minutes behind, Atalante is 5 minutes behind and Jupiter's fifteen that's good enough to figure out where you are. You don't need to send much data, just enough to carry a timestamp. It should be possible to receive anywhere within the solar system.
That said, star-sighting was good enough for Apollo.
________________________________
--m(^0^)m-- Wot, no sig?
STL comms has the advantage that it's easy to compare timestamps on the signals and get an accurate position. When Earth is 2 light minutes behind you, Mars is 3 minutes behind, Atalante is 5 minutes behind and Jupiter's fifteen that's good enough to figure out where you are. You don't need to send much data, just enough to carry a timestamp. It should be possible to receive anywhere within the solar system.
That said, star-sighting was good enough for Apollo.
________________________________
--m(^0^)m-- Wot, no sig?