The 2020 Repeater Directory® includes crowdsourced listings contributed by users, repeater owners, and volunteer frequency coordinators. This means more listings, and updated more often. Public service include this printed directory with your emergency go kit. 21,000+ listings. World s largest printed directory of repeater systems. Listings for US and Canada, organized by state/province, city, and operating mode. Digital repeaters including FUSION, D-STAR, DMR, NXDN, and P25 systems. VHF/UHF and microwave band plans included. Spiral "lay flat" binding ( 6" x 9"). Make it yours! Cover includes space to personalize your directory (permanent marker or label recommended). Please The repeater listings that appear in The ARRL Repeater Directory® are provided by RFinder, Inc.