New Trier Township High School District 203

System Name: New Trier Township High School District 203
Location: Northfield, Winnetka, IL
County: Cook
System Type: DMR Motorola Capacity Plus Multi Site (TRBO)
System Voice: DMR
Last Updated: October 29, 2025, 01:21 am UTC   [Updated 2 Sites]
System Notes

All talkgroups have full-time encryption, except Northfield Police SRO Channel

Sites and Frequencies

Key853.5375Ctrl control channel12452.3125 LTR / NXDN channel #
Winnetka Campus
Site 001 · 1
2 freqs
01152.34502152.285
Northfield Campus
Site 002 · 2
2 freqs
01152.952502154.490

Talkgroups

Keye / E encrypted talkgroup
DEC Mode Alpha TagDescriptionTag
101TEPPS EASTEast-Physical Plant ServicesSchools
102TESECURITY EASTEast-SecuritySecurity
103TEATHLETICS EASTEast-AthleticsSchools
104TEPPS WEST West-Physical Plant ServicesSchools
105TESECURITY WESTWest-SecuritySchools
106TEATHLETICS WESTWest-AthleticsSchools
107TEIT EASTEast-IT (Information Technology)Schools
108TEIT WESTWest-IT (Information Technology)Schools
130TNPD INTEROP West-Northfield Police-School Resource Officer: InteropLaw Tac
253TEWEST GROUP CALLWest-Group CallSchools
254TEEAST GROUP CALLEast-Group CallSchools
255TEALL CALLSystemwide-All CallSchools