Outside a local school window.
I’m guessing it has to do with networking but I’m curious about why they’re outside, especially as they’re not that high off the ground and can easily be tampered with from the street.
Stickers on them read “ROCK” and “ROLL”.
Sirius XM had two satellites above the continental US called Rock and Roll. Maybe dedicated antennas for either and whatever someone has decided to measure or experiment with? Would match the format of typical Sirius antennas.