Radio ham

Main article: Amateur radio

An amateur radio operator is someone who uses equipment at an amateur radio station to engage in two-way personal communications with other amateur operators on radio frequencies assigned to the amateur radio service. Amateur radio operators have been granted an amateur radio license by a governmental regulatory authority. As a component of their license, amateur radio operators are assigned a call sign that they use to identify themselves during communication. There are about three million amateur radio operators worldwide.[1]

Amateur radio operators are also known as radio amateurs or hams. The term "ham" as a nickname for amateur radio operators originated in a pejorative usage by operators in commercial and professional radio communities. The word was subsequently welcomed by amateur radio operators, and it stuck.


Country Number of amateur
radio operators
% population Year of
 Japan 1,296,059 1.012 1999 [2]
 United States 738,497 0.239 2012 [3]
 Thailand 176,278 0.275 2006 [2]
 South Korea 141,000 0.288 2000 [2]
 Germany 75,262 0.092 2007 [4]
 Canada 69,183 0.201 2011 [3]
 Republic of China 68,692 0.296 1999 [2]
 Spain 58,700 0.127 1999 [2]
 United Kingdom 58,426 0.094 2000 [2]
 Russia 38,000 0.026 1993 [2]
 Brazil 32,053 0.016 1997 [2]
 Italy 30,000 0.049 1993 [2]
 Indonesia 27,815 0.011 1997 [2]
 France 18,500 0.028 1997 [2]
 Ukraine 17,265 0.037 2000 [2]
 Argentina 16,889 0.042 1999 [2]
 Poland 16,000 0.041 2000 [2]
 Australia 15,328 0.067 2000 [2]
 India 15,679 0.001 2000 [2]
 Denmark 8,668 0.156 2012 [5]
 Slovenia 6,500 0.317 2000 [2]
 South Africa 6,000 0.012 1994 [2]
 Norway 5,302 0.106 2000 [2]

Few governments maintain detailed demographic statistics of their amateur radio operator populations, aside from recording the total number of licensed operators. The majority of amateur radio operators worldwide reside in Japan, the United States, Thailand, South Korea, and the nations of Europe. The top six countries by percentage of the population are Japan, Slovenia, Taiwan, South Korea and Thailand. Only the governments of Yemen and North Korea currently prohibit their citizens from becoming amateur radio operators. In some countries, acquiring an amateur radio license is difficult because of the bureaucratic processes or fees that place access to a license out of reach for most citizens. Most nations permit foreign nationals to earn an amateur radio license, but very few amateur radio operators are licensed in multiple countries.


In the vast majority of countries, the population of amateur radio operators is predominantly male. In the United States, approximately 15% of amateur radio operators are women.[6] In China, 12% of amateur radio operators are women.[7] The Young Ladies Radio League is an international organization of female amateur radio operators.

A male amateur radio operator can be referred to as an OM, an abbreviation used in Morse code telegraphy for "old man", regardless of the operator's age. A female amateur radio operator can be referred to as a YL, from the abbreviation used for "young lady", regardless of the operator's age. XYL was once used by amateur radio operators to refer to an unlicensed woman, usually the wife of a male amateur radio operator; today, the term has come to mean any female spouse of an amateur radio operator, licensed or not. Sometimes the wife of a ham operator is called a YF (wife). Although these codes are derived from English language abbreviations, their use is common among amateur radio operators worldwide. Incidentally, the most common language heard in the HF amateur bands (the bands below 30MHz that support worldwide communications) is English.


In most countries there is no minimum age requirement to earn an amateur radio license and become an amateur radio operator. Although the number of amateur radio operators in many countries increases from year to year, the average age of amateur radio operators is quite high. In some countries, the average age is over 80 years old, with most amateur radio operators earning their license in their 40s or 50s.

Some national radio societies have responded to this by developing programs specifically to encourage youth participation in amateur radio, such as the American Radio Relay League's Amateur Radio Education and Technology Program.[8] The World Wide Young Contesters organization promotes youth involvement, particularly amongst Europeans, in competitive radio contesting. A strong tie also exists between the amateur radio community and the Scouting movement to introduce radio technology to youth. WOSM's annual Jamboree On The Air is Scouting's largest activity, with a half million Scouts and Guides speaking with each other using amateur radio each October.[9]

Silent Key

Silent key refers to an amateur radio operator who is deceased.[10] The term can be abbreviated 'SK', especially in morse code.[11] The key in the term refers to a telegraph key, the instrument that all early amateur radio operators, as well as many contemporary amateur radio operators, have used to send Morse code. The term SK is used to refer to any amateur radio operator who is deceased, regardless of whether or not they were known to have actively used a telegraph key or Morse code in their two-way personal communications.



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