[ It takes a moment for Tosh to reply, due to her brain suffering a momentary geekgasm. ]

Um. Well it was a pretty thrown-together sort of thing, we didn't really have all the materials we needed, but basically -- we made several small signal receivers and put them in areas around the ship. Or at least places we could get to. And then used them to bounce the transmission signals and measure time and distance to narrow down the area where the signal originated from. It's a work in progress.