Heard reference to "switching to B" on an accident assist within the Troop 3 Middle Sector from 3-147. She's now on "B" (TGID 9007).
"Old 5-B" has been in use on a traffic mission on Interstate 80. Haven't heard a new channel designation for that one yet, but the "old DC-B/2-B/5-B", could be the "new 3-Detail A/3-Detail B/3-Detail C" since I haven't heard any activity on the "old District-Chicago" Detail channels in awhile
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I've seen many in Troop 3 with the new plates, and this could fall in line with the radio reprogramming reference I heard a couple days ago.
***3-147 just cleared the assist "and I'll be switching back to D" (TGID 9008)