Then again, who knows what they had stashed in their cabin? Probably the badges just contacted the interstellar transceiver in the hut, which then contacted the starship.Well at least we know the comm-badges of the 24th century permeate subspace. Voyager was talking with Janeway and Chakotay (who were stuck on 'New Earth' after being bitten by a mosquito) even after being how far away exactly?
Weeks?
Similarly, when Picard contacts Starbase 74 across interstellar ranges in "11001001" by slapping his commbadge, he's probably just contacting the ship's transceiver which then contacts the starbase. He might not entirely trust his ship's computer and especially its more humanlike interface functions at that plot point...
OTOH, the away team does stay in contact with the ship for a rather long time in "The Schitzoid Man". Or then it doesn't, as the communications could well be one-way at that point...
Lots of ways to interpret the evidence. And lots of ways to downplay future technology, or then to adorn it with futuristic functionalities that the original writers never thought of.
Timo Saloniemi
The only issue I probably see is that the technology by itself is in fact quite superior and capable of doing what I mentioned but it's the writers who often dumb it down for the sake of the drama (even though it could be adapted to suit the more advanced technology).
The novels have a tendency of using technologies as they were envisioned ... at least most of the ones I read for example.
It's a shame the serialized versions don't do the same and as a result many things suffer.
Yes there is lots of ways to interpret the evidence, but we got a distinctive impression that while they were on New Earth, aside from the communicators and a shuttle (which was mentioned as being left for them but would presumably be not powered up unless they would be able to leave the planet) they had nothing else to contact Voyager with.
Both Janeway/Chakotay never expected Voyager to return for them.