NWCD is exercising their VHF radios

from carma list

NWCD fire departments are exercising their VHF backup channels. FD1
departments went last week. FD 2 departments are going this week.
Arlington Heights and Buffalo Grove are on Fire North 154.235 MHz.
127.3 PL. Mount Prospect is on Fire South 154.205 MHz. 131.8 PL. FD 3
departments will go next week all will be on Fire South.

The tests are running Tuesday-Thursday from 0800-1700 each day.

[usually on a 800 trs iirc]
[near chicago and ohare]