In the late 1970's I was in Seattle and arranged for a tour of their fire boat station. SFD was on UHF, but still had some 33 MHz channels. In the wheel house of the boat was an old GE low band radio on 33.70MHz. I commented to the captain that LAFD used that frequency for dispatch. He said, "Oh yeah, I talk to them sometimes." Not much use of PL in those days. We also used to get strong signals from the East Coast on our local sheriff's low band frequency.
As solar conditions improve we'll see a lot more of this (I hope). Six meters has been open lately.
Thursday morning (1100 CDT), CHP Brown2, Tan, Purple, Turquoise were received in Coleman County TX for a couple of hours. Antenna is a 6 meter laird mobile.
The beauty of this location is scant trees, no power lines and nil cell phone towers!