Scanner Tales: Rise and fall of T-Band in the Chicago area - police

https://forums.radioreference.com/threads/scanner-tales-rise-and-fall-of-t-band-in-the-chicago-area.481340/

its interesting to think about how major paradigm shifts occur in
public safety wireless communications - most of it is driven by radio
manufacturers - for example - is there ANY requirement that any of the
current radio systems work well when rolling around on the ground?

T band = TV band = 470 mhz to 512 mhz - across the USA