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Learn about the FCC-issued licenses to operate amateur stations for personal use, the classes, privileges, exams and history of amateur radio in the US. Find out how to become a volunteer examiner and access the online database of licenses.
GROL stands for general radiotelephone operator license, a license granted by the U.S. Federal Communications Commission (FCC) that is required to operate certain radio equipment. Learn about the history, qualifications, exams, and endorsements of GROL and how to obtain one.
ULS is the FCC online portal for wireless licensing and research in the U.S. It simplifies the application and licensing processes, provides public access to the database, and features a Geographic Information System.
GMRS is a US land-mobile FM UHF radio service for short-range voice communication. It has 30 frequency channels in the 462-467 MHz band, shared with FRS, and requires a license for individuals and their family members.
Find out which radio and TV stations in the US have three-letter call signs assigned by the FCC. See the list of 67 different call signs and how they are used by AM, FM and TV stations.
Logbook of The World (LoTW) is a web-based service by ARRL for amateur radio operators to verify contacts and claim awards. Learn how LoTW works, its history, statistics, software, and network access incident.
Learn about the identifiers assigned to radio and TV stations by the FCC and NTIA, and how they reflect slogans, owners, locations, and numbers. Find out which stations have the same call letters for 100 years or more, and which ones have changed many times.
Learn about the LIDB, a collection of commercial databases used in the US and Canada for caller ID services. Find out how the LIDB works, who provides access, and how it differs across carriers and locations.