Old hat. But functional. 

 Flippzero and hackbat could do this at lower power.

https://www.leg.ba/the-burning-man-private-networks/

 

 Buy a hackable femtocell/enodeB for under $250, install it near yout local 3 letter agency hq and "man in the middle" them back.

nostr:nevent1qqsvwdps8pundpm8yjs7wqv779yv6wkn6uy9h5fvtv6j63jyh5k7e8spz3mhxue69uhhyetvv9ujuerpd46hxtnfdupzqevk6qqae8hq46de9yraeyq9gcsfsj3zzwy6385we4rxppzwre0dqvzqqqqqqyta83q9 

 6 January at the Capitol Building.