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Be sure to view the St. Louis County page

Frequencies

St. Louis City

St. Louis (City) Metropolitan Police Department (SLMPD)

See the wiki for additional info

Missouri Statewide Wireless Interoperable Network (MOSWIN)
Project 25 Phase I
All St Louis Public Safety uses this system for communications
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
45.86000WPHS224 B 151.4 PL LB S/W P/P Point-to-Point (back-up to 155.37) FM Law Talk
764.05625WQFX336 M SLMPD Interop 1 Interoperability / Mutual Aid P25 Interop
764.06875WQFX336 M SLMPD Interop 2 Interoperability / Mutual Aid P25 Interop
775.99375WQFX336 M SLMPD Interop 3 Interoperability / Mutual Aid P25 Interop
794.05625WQFX336 M SLMPD Interop 4 Interoperability / Mutual Aid P25 Interop
794.06875WQFX336 M SLMPD Interop 5 Interoperability / Mutual Aid P25 Interop
805.99375WQFX336 M SLMPD Interop 6 Interoperability / Mutual Aid P25 Interop
St. Louis City Emergency Management Agency (CEMA)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.15000KJD937 F 411 DPL StL CEMA Sirens1 St. Louis City Sirens (also CSQ?) FMN Data
458.15000WAN949 F StL CEMA Sirens2 St. Louis City Sirens [CSQ] WFK499 Telm Data
St. Louis City Fire Department / EMS
Missouri Statewide Wireless Interoperable Network (MOSWIN)
Project 25 Phase I
Fire uses this system 24 Hours a day for communications. Currently 154.13 is used 2100-0700 for Station Alerts only.
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
952.71875WNTS873 F StLFD MW RF Fire: Microwave Link (Fire Alarm Manager) FMN Data
Downtown St. Louis Emergency Preparedness (DSTEP)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
153.53000WQGN237 BM 186.2 PL StL DSTEP 1 Operations 1 [Expired 3/17] FMN Emergency Ops
155.71500KDZ387 BM 179.9 PL StL DSTEP 2 Operations 2 FMN Emergency Ops
Government
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
462.66250 M 136.5 PL SLC Shrf Janitor Sheriff: Building Janitors FMN Public Works
453.20000WDT462 RM 107.2 PL StL ACT Ops Civil Courts Building: Ops (WFN221) FMN Public Works
451.93750WQTD354 RM CC 1
TG 101
SL 1
SLC Library 101 St Louis City Public Library: Ops DMR Public Works
St. Louis Lambert International Airport (STL)

See listing under St Louis County 

EMS Agencies and Hospitals

AMR Abbott EMS - Missouri

MO service area serves 658 square miles of St. Louis City and County and parts of Jefferson, Franklin and St. Charles Counties.
As of 2017 - using CAD/LOGIS dispatching.  MED-10 used as back-up (see StL County)

Missouri Statewide Wireless Interoperable Network (MOSWIN)
Project 25 Phase I
Abbott units located at some St Louis City Firehouses are dispatched on talkgroup 10201 (as of 6/22)
Hospitals
Warner Communications-BJC Hospitals (NXDN)
NXDN NEXEDGE 4800
Current system
South City Hospital

formerly St. Alexius Hospital 

FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
463.71250WQPE871 RM CC 5
TG 1111
SL 1
StAlex Security Security DMR Security
462.16250WQPE871 RM 186.2 PL StAlex Sec/Mnt B Security / Maintenance (100.0?) FMN Business
155.34000WQPW212 BM HEAR340 Patient Reports FMN Hospital
St Louis Psychiatric Rehabilitation Center

Formerly Arsenal State Hospital

FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
857.96250WPRF605 BM 205 DPL ArsSH Ops Operations (simplex, licensed as R) FM Business
453.07500KNGE389 B ArsSH PG Paging Telm Data

Schools

Schools Buses - Unidentified
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
461.42500KNNJ719 RM 051 DPL Lind Sch Bus Lindbergh School: Buses FMN Schools
St. Louis City Public Schools
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
464.90000WPUL525 RM StCy Sch Sec Security Guards (Theresa School) (186.2?) FMN Security
452.70000WPUL525 M StCy Sch Op1 Board of Education FMN Schools
457.70000WPUL525 M StCy Sch Op2 Board of Education FMN Schools
462.47500WPUL525 M StCy Sch Op3 Board of Education FMN Schools
467.47500WPUL525 M StCy Sch Op4 Board of Education FMN Schools
451.55000WQOM490 RM 54 RAN Blow Mid Sch Blow Middle School [TG 1] NXDN Schools
451.17500WQOL752 RM Jeff ElemSch Jefferson Elementary (in use) NXDN Schools
463.85000WQOL752 RM Solden HS Solden High School (in use) NXDN Schools
462.47500WQOM490 RM SLC School School (in use) NXDN Schools
451.52500WQOL752 RM Sigel School Sigel School (in use) NXDN Schools
451.65000WQOL752 RM Walbridge El Walbridge Elementary (in use) NXDN Schools
451.67500WQOM490 RM Oak Hill Ele Oak Hill Elementary (in use) NXDN Schools
452.82500WQOM490 RM Mason Elemen Mason Elementary (in use) NXDN Schools
452.82500WQOL752 RM Sumner High Sumner High School (in use) NXDN Schools
452.87500WQOM490 RM Monroe Eleme Monroe Elementary (in use) NXDN Schools
462.52500WQOM490 RM Dewey School Dewey School (in use) DMR Schools
463.85000WQOL752 RM Solden High Solden High School (in use) NXDN Schools
464.50000 M 88.5 PL CarnahanHS Bus Carnahan High School of the Future: Bus Ops FM Schools
First Student

Also see First Student under St Louis County

First Student - St. Louis (LTR)
LTR Standard
Transportation Operations (still in use 2021)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
461.37500WQBJ552 RM 173.8 PL FS StL Union Union Base (Union 70 Center) FMN Schools
464.10000WNJQ665 RM 162.2 PL FS StL Brown Brown Base (411 Brown Ave) FMN Schools
461.65000WNJQ665 RM 179.9 PL FS StLC Bus2 Operations FMN Schools
Private / Parochial Schools
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
464.55000KD36042 M Lutheran HS Lutheran High School South FMN Schools
St Louis University High School
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
464.62500WRAJ782 RM CC 1
TG 2
SL 2
STLUHS Ops 2 Maintenance (?) DMR Schools
464.62500WRAJ782 RM CC 1
TG 3
SL 1
STLUHS Buses 3 Buses DMR Schools

Higher Education

Harris-Stowe State College
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
461.78750WPTX907 RM CC 3
TG 100
SL 1
HSSC Security Security DMR Schools
Ranken Technical College
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
152.39000WQGH826 RM CC 2
TG 1
SL 1
Ranken Security Security [Expired 2017] DMR Security
St. Louis College of Pharmacy
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
462.11250WQUX931 RM STL COP Ops Operations (in use) DMR Schools
St. Louis University (SLU) / Parks College
St. Louis University (DMR)
DMR Motorola Capacity Plus Single Site (TRBO)
Athletic Department Operations
St. Louis University (NXDN)
NXDN NEXEDGE 9600
Operations
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
461.48750WQIU325 RM 134 DPL SLU Ops 1 Athletics/Event Arena: Ops FMN Schools
462.06250WQIU325 RM CC 2
TG 11
SL 1
SLU Ops 2A Ops / Parking Garage: Security DMR Schools
462.06250WQIU325 RM CC 2
TG 12
SL 2
SLU Ops 2B Ops / Parking Garage: Ops DMR Schools
451.56250WQIU325 M SLU Ops 4 Campus Ops/Athletics/Event Arena FMN Schools
452.06250WQIU325 M SLU Ops 5 Campus Ops/Athletics/Event Arena FMN Schools
452.63750WQIU325 M SLU Ops 6 Campus Ops/Athletics/Event Arena FMN Schools
457.68750WQIU325 M SLU Ops 7 Campus Ops/Athletics/Event Arena FMN Schools
457.71250WQIU325 M 244 DPL SLU Ops 8 Campus Ops/Athletics/Event Arena FMN Schools
457.78750WQIU325 M SLU Ops 9 Campus Ops/Athletics/Event Arena FMN Schools
462.48750WQIU325 M SLU Ops 11 Campus Ops/Athletics/Event Arena FMN Schools
467.18750WQIU325 M SLU Ops 12 Campus Ops/Athletics/Event Arena FMN Schools
467.46250WQIU325 M SLU Ops 13 Campus Ops/Athletics/Event Arena FMN Schools
467.48750WQIU325 M SLU Ops 14 Campus Ops/Athletics/Event Arena FMN Schools
463.97500WPQA610 RM SLU Ops 17 Building Services/PIUS Library Bldg FMN Schools

Communications / Security

COM-EX NET -- Communications Exchange Network

Used as an exchange of information and networking of the different security staffs and organizations throughout the downtown area. The system is also meant to facilitate internal communication on security and beautification matters while providing an enhanced communication link with the police department. Several security staffs and organizations, as well as the CID Guide program, participate in ComEx Net. The CID Guide Dispatcher monitors the ComEx Net and the St. Louis 4th Police District frequency while they are on duty. The console operators of the USBank security staff monitor the base station when the CID Guides are not working. In all the ComEx Net system is monitored 24 hours per day, seven days per week.

DowntownSTL
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
463.80000WRDR514 RM CC 2
TG 1
SL 1
DSTL Security 1 Security DMR Security
463.80000WRDR514 RM CC 2
TG 2
SL 2
DSTL Security 2 Security DMR Security
463.82500WRDR514 RM CC 6
TG 4
SL 2
DSTL Ops TG4 Security Ops DMR Security
DSTEP - Downtown St. Louis Emergency Preparedness

See St. Louis City Public Safety

MetroTransit -- Metrolink/MetroBus
Missouri Statewide Wireless Interoperable Network (MOSWIN)
Project 25 Phase I
Admin, Fixed Route, Maintenance and most other communications. Use Tower 206, 207 and 208. Talkgroups 10401-10449