1.
Radio A non-commercial radio service for private recreational use by licensed individuals.
2.
Federal Communications Commission, the regulatory body responsible for overseeing amateur radio in the United States.
3.
A contact or conversation between two amateur radio operators.
4.
A general call for any station to respond, typically followed by the operator's call sign.
5.
Sign A unique combination of letters and numbers assigned to an amateur radio operator for identification purposes.
6.
Distance, typically referring to contacts made over long distances or to foreign countries.
7.
Location, referring to an operator's station location or geographical coordinates.
8.
High power operation, typically more than 100 watts.
9.
Shortwave listener, someone who listens to amateur radio transmissions but does not transmit.
10.
A scheduled on-air gathering of amateur radio operators for a specific purpose, such as emergency preparedness or casual conversation.
11.
Repeater: A radio station that receives signals on one frequency and retransmits them on another to extend the range of communication.
12.
A device used to transmit and receive radio signals.
13.
A combined transmitter and receiver unit used for two-way communication.
14.
A range of frequencies allocated for amateur radio use, such as the 20-meter band or the 2-meter band.
15.
Card A postcard exchanged between amateur radio operators to confirm a contact.
16.
Continuous Wave, a method of transmitting Morse code by turning a carrier wave on and off.
17.
A standardized set of three-letter codes used in amateur radio communication to convey information concisely.
18.
American Radio Relay League, the national association for amateur radio in the United States.
19.
Readability, Signal strength, and Tone, a system used to report signal quality during radio contacts.
20.
Extremely low power operation, typically less than 1 watt.
