Frequently Asked Questions
The most-asked questions about amateur radio.
What is amateur radio?
Amateur radio, often called ham radio, is the non-commercial use of dedicated radio frequencies for personal communication, technical experimentation, and emergency backup. Operators connect with each other across local, national, and global distances using voice, Morse code, or digital protocols.
Do I need a license to transmit?
Yes, in virtually every country you must pass a written examination and receive a unique callsign before you are legally allowed to send a signal. In the United States the FCC administers the process, while other nations route it through their own spectrum regulators.
What license classes are available in the US?
The FCC offers three tiers—Technician, General, and Amateur Extra—each granting progressively broader frequency privileges. Technician opens VHF/UHF and a few HF segments, General adds most of HF, and Extra unlocks every amateur band in the spectrum.
How much does it cost to get started?
A basic handheld VHF/UHF transceiver with a simple antenna can be found for a few hundred dollars, and used HF rigs often sell for well under $200. The main recurring costs are the exam fee and, optionally, a local club membership.
What is a callsign?
A callsign is a unique identifier assigned to each licensed operator, typically beginning with a country prefix (such as K or W in the US) followed by letters and numbers. It serves as your on-air name and must be transmitted at the start and end of every contact.
What is a repeater?
A repeater is a fixed station that receives a weak signal on one frequency and retransmits it on another, extending the range of handheld radios far beyond line-of-sight. Many are run by local ham clubs and are free for any licensed operator to use.
What are the main operating modes?
Common modes include SSB (single-sideband voice), FM, CW (Morse code), and digital protocols like FT8 and RTTY. CW and digital modes perform well on weak signals, while FM dominates local VHF and UHF traffic.
What is the ARRL?
The American Radio Relay League, founded in 1913, is the largest membership organization for amateur radio operators in the United States. It coordinates exam scheduling, publishes educational materials, trains emergency-communications teams, and advocates for the protection of amateur spectrum.
What do the terms QSO and QTH mean?
A QSO is the traditional shorthand for a completed two-way contact with another station, and QTH means location, used to state or ask where a station is operating. The Q-code system originated in early maritime radio and remains standard vocabulary in the hobby.
What are some landmark moments in amateur radio history?
Early spark-gap experiments around 1901 and the 1927 founding of the ARRL laid the groundwork for the modern hobby. More recently, hams provided critical emergency communications during Hurricane Katrina in 2005 and the 2011 Tōhoku earthquake, underscoring the service's real-world value.