Wisconsin Office of Emergency Communications

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State of Wisconsin Project 25 Unit Identification Plan

The State of Wisconsin has established this plan for Project 25 digital radio unit IDs. This is the identification number that is programmed into the radio and can be decoded by receiving units. The purpose of this plan is to provide a logical plan for the assignment of unique radio identifiers to all potential Project 25 digital capable radios used by public safety agencies within the State of Wisconsin. The goal of the plan is to eliminate use of duplicate identifiers and maximize the benefit of the imbedded unit ID capability through the use of a number that is logically defined. This number can be tied to an alphanumeric display.

The unit identifier consists of 7 numbers (in decimal format).

ABCDEFG
County CodePrefixUnit

A B      The first 2 digits will denote the county that the radio is based in or, for state and federal radios, the agency that owns it.

01-72 Counties, using the standard numbering (see list below)

73        Milwaukee County Transit System

74        Tribal

80        Non Governmental Organizations (contact plan coordinator for assignment) 81-89 State Agencies

90-99 Federal Agencies

C         The third digit is an optional prefix to differentiate between radios within a county that have the same unit number or radio call number, such as a mobile and portable assigned to an individual officer, or type of agencies.

  • Default or mobile radio
  • Portable radio
  • Control station or third radio assigned to an individual or unit
  • Fixed stations/bases/consoles/other

4-9       Additional portables or radios assigned to an individual or unit

Optionally used to differentiate between duplicate unit IDs used by different agencies within a county.

  • Police
  • Fire
  • EMS
  • Emergency Management
  • DPW
  • Local Govt/Other/Non-Governmental

DEFG The fourth through seventh digits are the unit ID of the vehicle, officer or person that the radio is assigned to, or the radio.

For further information, contact:
Carl Guse
Frequency Specialist
Wisconsin State Patrol Bureau of Communications
POB 7912
Madison, WI 53707-7912
608-266-2497
608-267-4495 fax
carl.guse@dot.state.wi.us

Wisconsin County/Agency List

  1. Adams
  2. Ashland
  3. Barron
  4. Bayfield
  5. Brown
  6. Buffalo
  7. Burnett
  8. Calumet
  9. Chippewa
  10. Clark
  11. Columbia
  12. Crawford
  13. Dane
  14. Dodge
  15. Door
  16. Douglas
  17. Dunn
  18. Eau Claire
  19. Florence
  20. Fond du Lac
  21. Forest
  22. Grant
  23. Green
  24. Green Lake
  25. Iowa
  26. Iron
  27. Jackson
  28. Jefferson
  29. Juneau
  30. Kenosha
  31. Kewaunee
  32. La Crosse
  33. Lafayette
  34. Langlade
  35. Lincoln
  36. Manitowoc
  37. Marathon
  38. Marinette
  39. Marquette
  40. Menominee
  41. Milwaukee
  42. Monroe
  43. Oconto
  44. Oneida
  45. Outagamie
  46. Ozaukee
  47. Pepin
  48. Pierce
  49. Polk
  50. Portage
  1. Price
  2. Racine
  3. Richland
  4. Rock
  5. Rusk
  6. St. Croix
  7. Sauk
  8. Sawyer
  9. Shawano
  10. Sheboygan
  11. Taylor
  12. Trempealeau
  13. Vernon
  14. Vilas
  15. Walworth
  16. Washburn
  17. Washington
  18. Waukesha
  19. Waupaca
  20. Waushara
  21. Winnebago
  22. Wood
  23. Milwaukee County Transit System
  24. Tribal
  29. Adjacent State Agencies
  30. Non Governmental Organizations
  31. Dept. of Transportation/State Patrol
  32. Dept. of Natural Resources
  33. Dept. of Justice
  34. Dept. of Military Affairs
  35. Dept. of Administration
  36. Dept. of Health & Family Services
  37. Dept. of Corrections
  38. University of Wisconsin
  40. US Dept. of Justice
  41. US Dept. of Agriculture
  42. US Dept. of Defense
  43. US Dept. of Homeland Security
  44. US Dept. of Interior
  45. US Dept. of Transportation
  46. US Dept. of Treasury

Examples

1402951
County CodePrefixUnit

1402951          Mayville Ambulance 2951 (14 Dodge County)

4802702
County CodePrefixUnit

4802702          Pierce County (48) Sheriff Lt. 2702 mobile radio

4812702
County CodePrefixUnit

4812702          Pierce County (48) Sheriff Lt. 2702 portable radio

4941482
County CodePrefixUnit

4941482          Osceola Fire Dept Pumper 1482 2nd portable radio (49 Polk County)

8100041
County CodePrefixUnit

8100041          State Patrol Car 41 mobile radio

8110041
County CodePrefixUnit

8110041          State Patrol Car 41 portable radio

8810041
County CodePrefixUnit

8120041          State Patrol Car 41 control station

8210123
County CodePrefixUnit

8210123          DNR Warden C123 portable radio

8200750
County CodePrefixUnit

8200750          DNR Natural Resources Officer R750 mobile radio

These examples use the decimal format. Some programming software may require use of hex format.