The ECX Amateur Radio Network consists of a VHF repeater located near Race Central in Joseph linked to a UHF repeater the near the Salt Creek Summit checkpoint. A VHF remote base on the UHF repeater gives backcountry units additional channel options to make contact with net control. Safety and Communications volunteers are located at Ferguson Ridge (Start/Finish), Salt Creek Summit, and Ollokot. Additional mobile units operate on snowmobiles as part of the trail crew.
The communications net operates for about 45 hours continuously, directed by a net control station at Race Central. Net Control operates mostly paperless, using a custom built web application that tracks resources, mushers, and weather across the course. A local server combined with generator and battery backups protects the system from power and Internet outages. Data from this system updates public websites and displays at Race Central around the clock. Race communications maybe monitored around the world through an Echolink Conference and a public Internet portal.