Petersburg FD unit numberings

[NS9710]

It's been a few years since I last owned a scanner, now I got me a Uniden BCD 396XT and I now am hearing "Southside Unit 801" and everything else is now "Unit 8##", when did this change and how can I determine the difference in which unit is which?

 

[BoxAlarm187]

This occurred in the past couple of months as the regional fire chiefs agreed upon a regional numbering system. Currently, New Kent (5), Powhatan (7), Petersburg (8), and Colonial Heights (9) are the only ones using it full-time. In Petersburg, Engine 1 became Engine 801, etc.


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[NS9710]

So just drop the 80 part of the unit ID and that decodes who/what?