Wisconsin nonprofit corporation 501(c)(3) public charity
Modern tools for modern frequency coordination, built specifically for amateur radio.
ARCS Status: Online
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The Wisconsin Repeater Alliance (WRA) is the organization. ARCS is the platform it operates and maintains.
The Amateur Radio Coordination System (ARCS) is a comprehensive coordination platform developed specifically for amateur radio frequency coordination organizations, repeater owners and the amateur radio community.
ARCS was created to provide modern tools that improve coordination efficiency, preserve valuable records and support responsible spectrum management. For many years, frequency coordinators have relied on spreadsheets, legacy software, paper records and manual processes. While these systems served the community well, many organizations now face growing administrative demands, ageing technology and increasing challenges around record preservation and technical analysis. ARCS was developed to meet those challenges.
The Wisconsin Repeater Alliance (WRA) is responsible for frequency coordination, spectrum management, policies, governance and oversight.
ARCS, developed by KD9HCW, is operated and maintained by WRA to perform the engineering and coordination functions.
Engineering-based analysis, explained in plain language
ARCS provides automated frequency coordination through engineering-based analysis. You don't need to be an engineer to apply; this is what the platform does with the information you supply.
ARCS brings the tools needed to manage frequency coordination into a single platform, including:
These capabilities help coordination organizations work more efficiently while maintaining accurate, accessible records.
The real platform, not a mock-up
Built for everyone in the coordination process
How WRA uses ARCS
The Wisconsin Repeater Alliance uses ARCS as its coordination platform to manage repeater coordination activities and spectrum records. ARCS supports the Alliance's commitment to fair and transparent coordination, accurate record keeping, technical and engineering-based review, long-term preservation of coordination records, and improved service to repeater owners and operators.
By reducing administrative workload, the platform lets volunteers and coordinators focus more on technical review, spectrum stewardship and supporting Wisconsin's amateur radio community.
Technology that supports coordinators, not replaces them
A guiding principle behind ARCS is that technology should support coordinators, not replace them. Organizations using ARCS keep their own policies, procedures, review processes and decision-making authority over frequency assignments in their service areas.
For the Wisconsin Repeater Alliance, this means coordination decisions remain under the authority of the organization and its governing structure, while benefiting from modern technology and improved data management.
Built specifically for amateur radio, built to last
ARCS was designed exclusively for amateur radio frequency coordination and supports the needs of frequency coordination bodies, repeater owners, amateur radio clubs, emergency communications organizations, technical review committees and individual operators.
Because it was built specifically for coordination activities, ARCS provides tools tailored to the unique requirements of amateur radio spectrum management rather than relying on general-purpose software.
Accurate coordination records, engineering analysis and efficient review processes are essential to protecting amateur radio spectrum and supporting reliable repeater operation.
ARCS helps coordination organizations reduce administrative workload, improve consistency and accuracy, preserve valuable historical records, enhance technical review capabilities, support repeater growth and strengthen cooperation between coordination organizations.
ARCS represents a commitment to the future of amateur radio frequency coordination. By combining modern technology with sound engineering practice and the experience of volunteer coordinators, the platform helps reduce interference, improve coordination efficiency, preserve historical records, improve data accuracy, support repeater growth and strengthen cooperation within the amateur radio community.
The goal is simple: a sustainable, modern framework that supports amateur radio repeater coordination for generations to come.
Read the ARCS development updateExplore the ARCS platform or learn how coordination works in Wisconsin.
