Comment by kotaKat
At this point someone needs to run an SDR and start capturing as much RF spectrum as possible, especially on any communications device that has a 'selective calling' feature.
The pagers could have been set off with a page sent to a 'group' capcode in a hidden slot with a unique beep pattern that a little tiny MCU picked up and set off the detonator.
Radios -- same thing. Possibly a group calling feature of a signalling system was used with a "secret" group hidden away in the radio programming?
> especially on any communications device that has a 'selective calling' feature.
I wonder if it’s even dumber than that. Entirely separate from the paging network and tuned to listen for a pulse at a specific RF frequency and then blow up.
Also gives the ability to target certain geographic areas.
But even if listening to pager spectrum, the paging network is incredibly insecure. Anyone could send out fake pages with the right RF setup (e.g. from a drone).