Interesting. I'd like to think it'd alert them if her particular device popped up. Although you'd need very specific coordinates to actually find something in a landfill. That would require mapping signal strength cross-referenced with the helicopter's GPS position.Don't believe so, from my understanding sniffer device is basically a fancy bluetooth receiver dialed into a specific frequency. It would notify you if it gained a connection like when a phone pairs to headphones. Also it would be more work to analyze it on the ground later, because you would have to figure out where during the flight it got a signal. Versus in the helicopter if you got a hit- you can visually mark the approximate area to tell a ground team to search.
Detecting a precise position with the Mk. I Eyeball from 500 feet up is tough. This is coming from someone who once was tasked with hitting a target with a sandbag from the side window of a Cessna. haha