Frequency Coordination

Frequency coordination prevents and mitigates radio-frequency interference between different radio systems that use the same operational frequency in a common geographical area. The Wisconsin Department of Transportation provides frequency coordination for Wisconsin public safety agencies, ensuring reliable, non-interfering radio telecommunications within the state and in collaboration with neighboring states.

Carl Guse The State Frequency Coordinator, Carl Guse, maintains an updated FCC radio frequency spectrum database, plans for the best utilization of radio channels and reviews all applications for public safety licensing from Wisconsin agencies. The State Coordinator works with the Association of Public Safety Communications Officials (APCO) and the American Association of State Highway and Transportation Officials (AASHTO) to assist agencies in obtaining FCC licensing.

Contact Carl by email or by phone at 608-266-2497.

What do you want to do?

Check current mutual aid frequency allocations: Statewide Mutual Aid Frequency Plan (2011)
Coordinate Tone Squelch codes (CTCSS/PL): Email WISCOM Tech
Request authorization for operation on Wisconsin mutual aid frequencies: Frequency Authorization Request Form
Authorize another agency to access to your frequency: Operating Under Another License
Understanding Wisconsin's P25 Unit ID Plan

For more information about licensing public safety frequencies, contact the State Frequency Coordinator or:

Association of Public Safety Communications Officials, Inc (APCO)
Automated Frequency Coordination Department
351 N. Williamson Blvd
Daytona Beach, FL 32114-1112
Phone: (888) 272-6911
Fax: (386) 322-X502
Email: afc@apcointl.org

American Association of State Highway and Transportation Officials (AASHTO)
c/o RadioSoft
8900 Dicks Hill Parkway
Toccoa, GA 30577
Phone: (888) 601-3676
Fax: (706) 754-2745
Email: angela@radiosoft.com or kathigit@radiosoft.com