Ham Radio
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99 free Ham Radio trivia questions with answers — technology quiz, new questions added Oct 2026.
Ham radio started as an insult for telegraphers with clumsy fists and became a worldwide hobby of about two million licensed operators who bounce signals off the Moon, chat with astronauts and keep talking when the phones go down. Its amateurs discovered skywave propagation and helped found the quartz crystal industry. These 99 questions cover the practice and the rules: the ITU and IARU, the three US licence classes, vanity call signs, UK and Canadian prefixes, nets and Elmers, CW and the Q code, SSB versus FM, packet radio and FT8, EchoLink, amateur television, EME and ARISS, power limits from 25 W Foundation licences to 2.25 kW in Canada, and the two countries that still issue no licences at all. Every answer is cited to a page we checked. Play it solo or print it for a club night.
30 of 99 questions with answers and explanations. Play the quiz
Q 01The 'ham' in ham radio began as an insult aimed at whom?
Telegraphers with poor Morse skills
Telegraphers with poor Morse skills were mocked as 'ham-fisted' by 19th-century professional wire operators; radio amateurs later adopted the jibe as a badge of pride.
Q 02Which body establishes the amateur radio service through its Radio Regulations?
International Telecommunication Union
International Telecommunication Union Radio Regulations define the amateur and amateur-satellite services and allocate their bands; each national government then licenses operators and issues call signs.
Q 03Under FCC rules, how often at minimum must a US station give its call sign?
Every ten minutes
Every ten minutes during a contact, and at its end, a US station must transmit its call sign under FCC Part 97 rule 97.119; some other countries allow longer intervals.
Q 04What 1927 definition distinguished a radio amateur from commercial operators?
Personal aim, no pecuniary interest
Personal aim, no pecuniary interest: the 1927 Washington International Radiotelegraph Convention defined an amateur as a person interested in radio technique purely for personal aims and without any monetary reward.
Q 05What is the worldwide umbrella body for national ham societies?
IARU
IARU, the International Amateur Radio Union founded in Paris in 1925, federates national societies such as the ARRL and RSGB and represents amateurs at ITU conferences.
Q 06In 2011, about how many people worldwide were estimated to be active in amateur radio?
2 million
2 million people worldwide were estimated to be regularly active in amateur radio in 2011, including about 830,000 stations in the Americas, 750,000 in Asia-Pacific and 400,000 in Europe, Africa and the Middle East.
Q 07Radio amateurs are credited with discovering which propagation phenomenon?
Skywave
Skywave propagation — signals refracted back to Earth by the ionosphere — was demonstrated by amateurs in 1923, when transatlantic contacts on short waves showed bands dismissed as useless could span the world.
Q 08How many amateur stations did the 1909 Wireless Blue Book list in the US and Canada?
89
89 amateur stations appear in the First Annual Official Wireless Blue Book of the Wireless Association of America, published in 1909, the first such callbook for the United States and Canada.
Q 09In amateur radio, what does the abbreviation 'DX' denote?
Long-distance contact
Long-distance contact is what 'DX' denotes — the term was telegraph shorthand for 'distance' — and chasing DX, especially rare countries, is a core amateur pursuit.
Q 10What are scheduled on-air meetings of operators called?
Nets
Nets are directed by a net control station that calls in participants in turn; some are emergency-preparedness drills, others weekly social round-tables or traffic-handling sessions.
Q 11Which of these is an amateur radio operating award?
Worked All States
Worked All States (WAS) is an ARRL award for confirmed contacts with all 50 US states; DXCC, for 100 countries, and Worked All Continents are other well-known awards.
Q 12Which voice mode is favoured for long-distance contacts because of its efficiency?
Single sideband
Single sideband suppresses the carrier and one sideband, so all transmitter power goes into the remaining sideband in about 3 kHz of bandwidth — far more efficient than AM for long-distance contacts.
Q 13Morse code transmission is also known by which two-letter abbreviation?
CW
CW stands for continuous wave, the keyed unmodulated carrier used to send Morse code; it gets through under weak-signal conditions because it needs only a few hundred hertz of bandwidth.
Q 21Through which programme do astronauts make amateur contacts from the International Space Station?
ARISS
ARISS — Amateur Radio on the International Space Station — schedules contacts between licensed crew members and schools; it succeeded the SAREX shuttle programme of the 1980s and 1990s.
Q 22What must most countries' candidates pass to receive an amateur licence?
An examination
An examination covering electronics, propagation, operating practice and regulations is the standard route; most administrations tie licence privileges to the level of exam passed.
Q 23What is the entry-level amateur licence in both the UK and Australia called?
Foundation
Q 14Until what year did international rules require Morse proficiency for frequencies below 30 MHz?
2003
2003 was when the World Radiocommunication Conference (WRC-03) made Morse testing optional for access below 30 MHz; the United States dropped its own requirement in February 2007.
Q 15Which internationally understood shorthand system is used in Morse contacts?
Q code
Q code signals are three-letter groups beginning with Q, such as QTH (location) and QSL (acknowledgement), devised for maritime telegraphy in 1909 and adopted by amateurs in Morse and voice contacts.
Q 16Which digital mode, popular since 2017, allows efficient weak-signal shortwave contacts?
FT8
FT8, released in July 2017 within the WSJT-X suite by Joe Taylor and Steve Franke, exchanges 15-second structured messages and decodes signals well below the noise floor.
Q 17Packet radio, developed in the 1970s, uses which protocol?
AX.25
AX.25, an amateur adaptation of the X.25 data-link protocol, frames packet-radio data with station call signs as addresses; TCP/IP is often carried over it.
Q 18EchoLink and the Internet Radio Linking Project are examples of what?
RoIP
RoIP — radio over Internet Protocol — describes systems such as EchoLink and IRLP that link repeaters and operators worldwide by carrying voice across the internet with VoIP techniques.
Q 19On which band does fast-scan amateur television typically operate?
70 cm
70 cm — the 420–450 MHz band in the United States — has room for a full-bandwidth analogue or digital television signal, unlike the narrow lower bands, so fast-scan amateur television lives there.
Q 20What do hams commonly call the room or building housing their station?
The shack
The shack is the hams' name for the room or building housing their station, a term dating from early wireless days when gear was often kept in a makeshift outbuilding.
Foundation is the first of three licence grades in both countries — followed by Intermediate and Full in the UK, and Standard and Advanced in Australia — with a short syllabus and modest power limits.
Q 24Which US agency issues amateur radio licences?
Federal Communications Commission
Federal Communications Commission Part 97 rules govern US amateur radio; the FCC grants licences on the basis of exams run by volunteer examiner teams and assigns call signs from its database.
Q 25What is the highest US ham licence class?
Extra
Extra — formally Amateur Extra — sits above Technician and General and grants every amateur frequency privilege; it requires passing a 50-question exam drawn from a published pool.
Q 26How long is a US amateur radio licence valid?
Ten years
Ten years is the FCC licence term, renewable without re-examination; the exam question pools, by contrast, are published in advance and refreshed on a four-year cycle.
Q 27Which two countries do not issue amateur radio licences to their citizens?
Yemen and North Korea
Yemen and North Korea are the two states that issue no amateur licences to their own citizens, although foreign operators have occasionally been permitted short DXpeditions from each.
Q 28In North America, what are experienced hams who mentor newcomers called?
Elmers
Elmers, the mentors who guide newcomers, take their name from a 1971 QST column by Rodney Newkirk, W9BRD, who wrote of the helpful 'Elmer' every ham remembers.
Q 29Which is the oldest national amateur radio society, formed in 1910?
Wireless Institute of Australia
Wireless Institute of Australia, founded in Sydney in 1910, predates the Radio Society of Great Britain (1913) and the American Radio Relay League (1914) and is recognised as the world's oldest national amateur society.
Q 30What is a self-chosen call sign called?
Vanity
Vanity call signs, chosen by the licensee from available combinations, have been issued by the FCC since 1996; the agency dropped its vanity fee in 2015 and introduced a $35 application fee in 2022.