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- Department of Forestry & Fire Protection (CAL FIRE) (CA)
- Department of Forestry (VA)
- Department of Game and Inland Fisheries (VA)
- Department of Health Services (WI)
- Department of Highways (WV)
- Department of Homeland Security
- Department of Homeland Security (IN)
- Department of Homeland Security and EMA (IA)
- Department of Human Services (IA)
- Department of Human Services (MN)
- Department of Justice (CA)
- Department of Justice (NS)
- Department of Military Affairs (WI)
- Department of Natural Resources (DNR) (MI)
- Department of Natural Resources (IA)
- Department of Natural Resources (IN)
- Department of Natural Resources (MD)
- Department of Natural Resources (MN)
- Department of Natural Resources (NS)
- Department of Natural Resources (WA)
- Department of Natural Resources (WI)
- Department of Natural Resources and Environment (DNR) (MI)
- Department of Natural Resources and Environment (DNRE) (MI)
- Department of Parks & Recreation (CA)
- Department of Parks and Recreation (State Parks) (CA)
- Department of Public Safety (DPS)
- Department of Public Safety (IA)
- Department of Public Safety (NV)
- Department of Public Safety (TX)
- Department of Resources and Economic Development (NH)
- Department of Roads (NE)
- Department of Safety (NH)
- Department of State Health Services (TX)
- Department of State Police (MD)
- Department of State Police (MI)
- Department of State Police (MSP) (MI)
- Department of State Police (OR)
- Department of State Police (VA)
- Department of Transportation (CALTRANS) (CA)
- Department of Transportation (IA)
- Department of Transportation (IN)
- Department of Transportation (MD)
- Department of Transportation (ME)
- Department of Transportation (MN)
- Department of Transportation (MT)
- Department of Transportation (ND)
- Department of Transportation (NV)
- Department of Transportation (OR)
- Department of Transportation (PennDOT) (PA)
- Department of Transportation (TN)
- Department of Transportation (TX)
- Department of Transportation (TXDOT) (TX)
- Department of Transportation (VA)
- Department of Transportation (WY)
- Department of Transportation and Infrastructure Renewal (NS)
- Department of Water Resources (CA)
- Department of the Highway Patrol (CHP) (CA)
- Department of the Interior
- Deprecated Onondaga Co. Local Goverment Freq.'s
- Des Moines County (IA)
- Des Moines County (IA) Bridges
- Deschutes County (OR)
- Determining Base/Step/Offset for VHF/UHF Motorola Systems
- Determining Motorola Type I Fleetmaps
- Detroit Connecting Railroad
- Detroit Metropolitan Wayne County Airport (DTW) Wayne County (MI)
- Detroit Public Schools
- Detroit Public Schools Old Talkgroups
- Dickenson County (VA)
- Dickinson County (IA)
- Dickinson County (MI)
- Diga-Talk
- Diga-Talk (NID-14)
- Diga-Talk (NID-14) Sites and Frequencies
- Diga-Talk (NID-14) Unidentified Users
- Digby County (NS)
- Digital End Code detection
- Digital Scanner Comparison Chart
- Digital Speech Decoder (software package)
- Digital Voice Conversion Method
- Dinosaur National Monument
- Dinwiddie County (VA)
- Dinwiddie County Airport (PTB) Dinwiddie County (VA)
- Diplomatic Security Service
- Dippin Donuts (Oneida Co.)
- Direct Access (UHF)
- Direct Access (UHF) Unknown Talkgroups
- Direct Connect Computer Based Applications
- Direct Connect Mobile Device Support
- Direct Connect WiFi Based Applications
- Dirt Track Racing Frequencies
- Disaster (US Nationwide)
- Disaster Relief
- Discovery Mode
- Discriminator output
- Dispatching centres in Nova Scotia
- Distance Measuring Equipment (DME) Frequencies
- Distrct of Columbia Radio IDs
- District 13 - Cherry Hill Township
- District 15 - Haddon Township
- District of Columbia
- District of Columbia(US)
- District of Columbia (DC)
- District of Columbia (DC) Apparatus
- District of Columbia (DC) Federal Apparatus
- District of Columbia (DC) Fire Sta. Locations
- Dittronics (DMR XPT)
- Dittronics (DMR XPT) Talkgroups and Radio IDs
- Dittronics (XPT)
- Dittronics - UHF (DMR)
- Dittronics - UHF (SEMO)
- Dittronics - UHF (SEMO) Unknown Talkgroups
- Dittronics - UHF (XPT)
- Division of Forestry (FL)
- Division of Forestry (KY)
- Division of Natural Resources (WV)
- Dixie County (FL)
- Dixon County (NE)
- Doddridge County (WV)
- Dodge County (MN)
- Dodge County (MN) Kasson PD
- Dodge County (MN) Radio IDs on ARMER
- Dodge County (MN) West Concord PD
- Dodge County (NE)
- Dodge County (WI)
- Dollywood
- Dollywood Sevier County (TN)
- Dolores County (CO)
- Dolphin Stadium Dade County (FL)
- Domer Communications (Canton)
- Domer Communications (Canton) Unknown Talkgroups
- Domer Communications NE Ohio
- Domer Communications NE Ohio Channels and Sites
- Domtar Paper Company
- Domtar Paper Company Talkgroups
- Don Scott Field (OSU) Franklin County (OH)
- Dona Ana County (NM)
- Door County (WI)
- Dorchester County (MD)
- Dorchester County (MD) Bridges
- Dorchester County (SC)
- Double A baseball
- Dougherty County (GA)
- Douglas County (CO)
- Douglas County (IL)
- Douglas County (KS)
- Douglas County (MN)
- Douglas County (MO)
- Douglas County (NE)
- Douglas County (NE) Fire/EMS
- Douglas County (NE) Fire/EMS Channel Plan on ORION
- Douglas County (NE) Fire IDs
- Douglas County (NE) Law Enforcement
- Douglas County (NE) OPD / OCCP Channel Lineup on ORION
- Douglas County (NE) Sheriff / Local PD Channel Lineup on ORION
- Douglas County (NV)
- Douglas County (OR)
- Douglas County (WA)
- Douglas County (WI)
- Douglas County Public Safety
- Dover Air Force Base
- DowDuPont Plants
- Dow Chemical Fort Saskatchewan
- Dow Chemical Plant Old Talkgroup Information
- Downriver Mutual Aid (Project 25) Radio System
- Downriver Mutual Aid (Project 25) Unknown Talkgroups
- Downtown Emergency Radio System (Houston)
- Downtown Fort Lauderdale Broward County (FL)
- Downtown Harris County (TX)
- Downtown Sports Venues St. Louis City (MO)
- Drag
- Drug Enforcement Administration
- Drug Enforcement Agency
- Drug Interdiction Frequencies
- DuPage County (IL)
- DuPage County (IL) Law Enforcement IDs
- Dubois County (IN)
- Dubuque County (IA)
- Dubuque Regional Airport (DBQ) Dubuque County (IA)
- Duchesne County (UT)
- Duck River Electric Membership Corporation
- Dufferin County (ON)
- Duke Energy (Florida)
- Duke Energy P25
- Duke Energy P25 - 201 - Duke Energy IN-KY-OH Site Research
- Duke Energy P25 - 91F14:201 - IN-KY-OH Site Research
- Duke Energy P25 - 91F14:2D7 - Florida Site Research
- Duke Energy P25 - 91F14:397 and 91F14:3D4 - Carolinas Site Research
- Dukes County (MA)
- Duluth International Airport (DLH) St. Louis County (MN)
- Dunkin Donuts
- Dunkin Donuts (Blair Co.)
- Dunkin Donuts (Cayuga Co.)
- Dunkin Donuts (Cortland Co.)
- Dunkin Donuts (Herkimer Co.)
- Dunkin Donuts (Jefferson Co.)
- Dunkin Donuts (Madison Co.)
- Dunkin Donuts (Oneida Co.)
- Dunkin Donuts (Oswego Co.)
- Dunkin Donuts (Palm Beach Co.)
- Dunkin Donuts (Tompkins Co.)
- Dunklin County (MO)
- Dunn County (WI)
- Dupage County (IL) Fire/EMS
- Duplex
- Duplicate Channel Alert
- Duplin County (NC)
- Durham County (NC)
- Durham County (ON)
- Durham NextGen
- Durham NextGen Unconfirmed Talkgroups
- Durham Region
- Durham Region Transit
- Dutchess County (NY)
- Dutchess County (NY) Beacon Fire
- Dutchess County (NY) Fire/EMS
- Dutchess County (NY) Fire Tone Outs
- Dutchess County (NY) Firefighting
- Dutchess County (NY) Old Channel Plans
- Dutchess County (NY) Poughkeepsie
- Dutchess County (NY) School Districts
- Dutchess County (NY) Wappingers Falls
- Dutchess County Airport (POU) Dutchess County (NY)
- Duval County (FL)
- Duval County (FL) Drawbridges
- Dyers Bay Fleetnet Tower
- Dyess AFB Taylor County (TX)
- Dyess Air Force Base
- Dyess Air Force Base Unknown Talkgroups
- Dynamic Memory Architecture
- E-Comm (WARS)
- EA-Eastover Sub
- EADS Echotel Waterfall
- EB-E and BV Sub
- ECSS
- EDACS
- EDACS Fleetmap
- EDACS Narrowband
- EDACS Narrowband Networked
- EDACS Networked
- EDACS Patch Tracking
- EDACS Provoice
- EDACS Provoice Digital Systems (Police/Fire)
- EDACS SCAT
- EDACS Standard
- EDACS Talkgroup Conversions
- EK-EK Sub
- ELS Orlando
- EMS / Ambulance / Medical Helicopters / IDPH (IL)
- EMS / MedEvac / Public Health (IL)
- ERP
- ERS-OCI TRBOConnect Cap+ Talkgroup Discussion
- ERS-OCI TRBOconnect Cap+
- ERS-OCI TRBOconnect Cap+ FCC License Information
- ERS-OCI TRBOconnect Con+
- ESK
- ESPN
- ESPN Conventional Frequencies
- ESP Wireless
- ESP Wireless (Channahon)
- ESP Wireless - UHF (Chicago
- ESP Wireless - UHF (Chicago Sears
- ESP Wireless - UHF (Chicago Sears Tower)
- ESP Wireless - UHF (Chicago Sears Tower) Unknown Talkgroups
- ESP Wireless LTR - 900 MHz (Chicago)
- ET-Etowah Sub
- EV-Evansville Terminal Sub
- EW-Erie West Sub
- E D Electronics - LTR
- Eagle County (CO)
- East Baton Rouge Parish (LA)
- East Bay Regional Communications System (EBRCS)
- East Bay Regional Communications System (EBRCS) Dispatch and Consoles
- East Bay Regional Communications System (EBRCS) Radio IDs
- East Bay Regional Communications System (EBRCS) Unknown Talkgroups
- East Central Oklahoma Emergency Communications Network
- East Fishkill (NY) Trunking
- East Fishkill (Town)
- East Kentucky Power Cooperative
- East Kentucky Power Cooperative System Research
- East Kootenay County (BC)
- East Mountain Communications
- East Mountain Communications Radio IDs
- East Mountain Communications Sites
- East Mountain Communications Unknown Talkgroups
- East Texas Rural Civil Defense
- East Windsor
- Eastern Idaho Cooperative Agencies Wireless Interoperable Network (EICAWIN)
- Eastern Idaho Interagency Fire Center (ID)
- Eastern Iowa Milcom
- Eastern NY Unknown Users
- Eastern Riverside County Interoperable Communications Authority (ERICA)
- Eastern Riverside County Interoperable Communications Authority (ERICA) Unknown Talkgroups
- Eastern Virginia Regional Communications
- Eastland County (TX)
- Eastman Kodak
- Eastman Kodak (NY)
- Eaton Centre
- Eaton City Schools
- Eaton County (MI)
- Eau Claire County (WI)
- Eden Prairie City Services
- Edgar County (IL)
- Edgecombe County (NC)
- Edgefield County (SC)
- Editing Conventional Favorites List in Sentinel
- Edmonton County (AB)
- Edmonton Public Safety and Public Works
- Edmonton Public Safety and Public Works Unit IDs
- Edmonton Transit System
- Education Westmoreland County (PA)
- Edwards Air Force Base
- Edwards County (IL)
- Effingham County (GA)
- Effingham County (GA) Drawbridges
- Effingham County (IL)
- Effingham County (IL) Codes and Pager Tones
- Effingham County (IL) Public Safety Units
- Eglin AFB /Destin-Fort Walton Beach Airport (VPS) Okaloosa County (FL)
- El Dorado County (CA)
- El Paso County (CO)
- El Paso County (CO) Colorado Springs City
- El Paso County (CO) Data
- El Paso County (CO) Fire Dept. Locations
- El Paso County (TX)
- El Paso County (TX) El Paso City
- El Paso International Airport (ELP) El Paso County (TX)
- El Paso Regional Communications System
- El Paso Regional Communications System Radio IDs
- Elbert County (CO)
- Eldorado Scioto Downs
- Eldorado Scioto Downs Unknown Talkgroups
- Electro-Pro LLC
- Electrocomm UHF NEOH (NXDN)
- Electrocomm UHF NEOH (NXDN) Unknown Talkgroups
- Electronics Learning Resources
- Elements Casino Mohawk
- Elements Casino Mohawk Unknown Talkgroups
- Elgin County (ON)
- Elgin Public Safety/Public Works
- Elk County (PA)
- Elkhart County (IN)
- Elkton FCI (Federal Correctional Institution)
- Ellington International Airport (EFD) Harris County (TX)
- Ellis County (TX)