https://www.theverge.com/22985101/dji-aeroscope-ukraine-russia-drone-tracking

Something that stuck out to me:

The AeroScope signals are not encrypted, despite what we wrote in a previous version of this post — even though DJI and an independent source both told us they were encrypted, and DJI insisted they were when we did a fact-check, DJI now admits that they aren’t encrypted at all. So they could be picked up by other kinds of receivers.