I encourage every to (always) but particularly now, update the new call signs with RIDs in the SC21 RID pages.
wiki.radioreference.com

I encourage every to (always) but particularly now, update the new call signs with RIDs in the SC21 RID pages.
![]()
STARCOM21 Statewide Illinois - The RadioReference Wiki
wiki.radioreference.com
D5 7/10 – I-80 west of I-55 to County Line…I-55 south of I-80 to County LineNorth (Current D2-A talkgroup) will be the the Kennedy and Edens Expressways, Interstate 290 north of St. Charles Road, Interstate 355 north of Army Trail Road.
DC N1/N2 – Kennedy South
DC N3/N4 – Kennedy North
DC N5/N6 – Edens
D2 P5/P6 – I-290 north of Devon to I-90. Rt 53 north to Lake-Cook Rd (2 cars)
D2 P2/P3 – I-355 north of Army Trail to I-290. I-290 north of St Charles to Thorndale
Middle (Current DC-C Middle talkgroup) will be Interstate 290 south of St. Charles Road, the entire Interstate 290 into the city, Interstate 55 to Interstate 355.
D2 M3 – I-290 south of St Charles to 17th
DC M1 – I-290 East
DC M2 – I-290 West
D2 P1/M6 – I-55 north of I-355 to 1st Ave
DC M4 – I-55 north of Pulaski to LSD
DC M5 – I-55 north of 1st Ave to Pulaski
TWI
South (Current DC-D South talkgroup) will be the Dan Ryan and the entire Interstate 94 south of the Steel Bridge, Interstate 57 to Steger Road, Interstate 394 south of Interstate 80/294 interchange, Interstate 80 east to State Line from Interstate 80/294 interchange, Interstate 80 east of Harlem Ave.
DC S1 – Ryan North
DC S2/S3 – Ryan
DC S4 – Ryan South /I-57
DC S5 – Ford North
DC S6 – Ford South
D5 S7/11 – I-80 east of 394. 394 south of I-80. I-57 south of Steger to County Line
D5 S8/S9 – I-57 north of Steger to 119th. I-80 east of Harlem to 394
Southwest (Current D5-A talkgroup) will be Interstate 80 west of Interstate 55 to County Line…Interstate 55 south of Interstate 80 to County Line, Interstate 55 north of Interstate 80 to Interstate 355, Interstate 80 east of Interstate 55 to Harlem.
Troop 8 (District 11/18) mostly using new identifiers today: (So far)
Former D18A 17009 appears to be 8-1xx units (in former District 18 area) (8-102, 103, 105)
Former D11A 17000 appears to be 8-xx units (in former District 11 area) (8-26, 94)
Former D11B 17001 so far has been ICP 4Fxx units (4-F-30)
Former D11C 17002 so far has been DCI 7-IDA units (7-I-46)
11-K9-2 was still using his identifier today
District 11 ISPERN is still being said as "District 11 ISPERN" and saying "State Police Collinsville"
Collinsville Dist. 11 is now using
8 plus the car number it appears.
Ex. 8-116 8-57 etc.
CC and TG appear unchanged.
Yes I DID
Sorry if I upset the Cart.
Happy New Year
TOM
Forensic Service (F-Frank Units), Secretary of State (x-J-John-xx), and Department of Natural Resource Units (x-F-Frank-xx) units are retaining their call signs at this time.
DC-B (Old District-Chicago North 9006), was used by the State Fire Marshal (DA (David-Adam-5), and was answered by Chicago (don't call them District-Chicago).
Troop 3 has retained the Priority/ISPERN and Car-to-Car channels/talkgroups that were previously used.
Still some confusion, old habits going on as expected, but I'm sure they'll get the hang of it.
Posted in the new SC21 thread too but hearing T4 using 13002, T5 using 13000, T6 using 13004, T7 using 13007, all as expected. Haven't seen any other talkgroup usage than that on site 229.
Happy New Year!
Just started monitoring today in Troop 8, and won't be as much traffic on a Sunday.
But yesterday, the dispatcher told a unit to use "11A", and told another unit that their assignment was "55 talkgroup TG A". Not sure if that means along I-55 or not. A former district 18 unit was told "North Patrol" while using the old18A (which D18 would be the northern section of Troop 8.
TROOP 8
"District 18 Units" on D18 ISPERN "State Police Litchfield" (Litchfield is still sometimes said, but not usually from experience over the years)
"District 11 Units" on ISPERN "State Police Collinsville"
Hearing some units call in on 18A (8-xx) and told to go to 11A.
Currently a shooting in State Park (village southwest of Collinsville). 11A secured for incident. Others moved to 11B for dispatch.
I heard dispatch call "Troop 1 Units" on D1 ISPERN earlier. Seems D16 units are "1-" units now. D17 units seem to be "2-" units and D2 and D5 units being "3-".
Fun times!
'