Amateur Radio
The international symbol for amateur radio, included in the logos of many IARU member societies. The diamond holds a circuit diagram featuring components common to every radio: an antenna, inductor and ground. |
Amateur radio (also called ham radio) is the use of designated radio frequency spectrum for purposes of private recreation, non-commercial exchange of messages, wireless
experimentation, self-training, and emergency communication. The term
"amateur" is used to specify persons interested in radio technique
solely with a personal aim and without direct pecuniary interest, and to
differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.).
The amateur radio service (amateur service and amateur satellite service) is established by the International Telecommunication Union
(ITU) through the International Telecommunication Regulations. National
governments regulate technical and operational characteristics of
transmissions and issue individual stations licenses with an identifying
call sign.
Prospective amateur operators are tested for their understanding of key
concepts in electronics and the host government's radio regulations.
Radio amateurs use a variety of voice, text, image, and data
communications modes and have access to frequency allocations throughout
the RF spectrum to enable communication across a city, region, country, continent, the world, or even into space.
Amateur radio is officially represented and coordinated by the International Amateur Radio Union
(IARU), which is organized in three regions and has at its members the
national amateur radio societies which exist in most countries.
According to an estimate made in 2011 by the American Radio Relay League, two million people throughout the world are regularly involved with amateur radio.[1]
About 830,000 amateur radio stations are located in IARU Region 2 (the
Americas) followed by IARU Region 3 (South and East Asia and the Pacific
Ocean) with about 750,000 stations. A significantly smaller number,
about 400,000, are located in IARU Region 1 (Europe, Middle East, CIS,
Africa).
History
The origins of amateur radio can be traced to the late 19th century
though amateur radio, as practiced today, did not begin until the early
20th century. The first listing of amateur radio stations is contained
in the First Annual Official Wireless Blue Book of the Wireless Association of America in 1909.[2] This first radio callbook lists wireless telegraph
stations in Canada and the United States, including 89 amateur radio
stations. As with radio in general, the birth of amateur radio was
strongly associated with various amateur experimenters and hobbyists.
Throughout its history, amateur radio enthusiasts have made significant
contributions to science, engineering, industry, and social services. Research by amateur radio operators has founded new industries,[3] built economies,[4] empowered nations,[5] and saved lives in times of emergency.[6][7]
Licensing
In all countries that license citizens to use amateur radio,
operators are required to display knowledge and understanding of key
concepts. This is usually done by passing an exam; however some
authorities also recognize certain educational or professional
qualifications (such as a degree in electrical engineering) in lieu.[20] In response, hams are granted operating privileges in larger segments of the radio frequency
spectrum using a wide variety of communication techniques with higher
power levels permitted compared to unlicensed personal radio services
such as CB radio, Family Radio Service or PMR446 that require type-approved equipment restricted in frequency range and power.
In many countries, amateur licensing is a routine civil
administrative matter. Amateurs are required to pass an examination to
demonstrate technical knowledge, operating competence and awareness of
legal and regulatory requirements in order to avoid interference with
other amateurs and other radio services. There are often a series of
exams available, each progressively more challenging and granting more
privileges in terms of frequency availability, power output, permitted
experimentation, and in some countries, distinctive call signs. Some
countries such as the United Kingdom and Australia
have begun requiring a practical training course in addition to the
written exams in order to obtain a beginner's license, called a
Foundation License.
Newcomers
Many people start their involvement in amateur radio by finding a
local club. Clubs often provide information about licensing, local
operating practices, and technical advice. Newcomers also often study
independently by purchasing books or other materials, sometimes with the
help of a mentor, teacher, or friend. Established amateurs who help
newcomers are often referred to as "Elmers" within the ham community.[23][24]
In addition, many countries have national amateur radio societies which
encourage newcomers and work with government communications regulation
authorities for the benefit of all radio amateurs. The oldest of these
societies is the Wireless Institute of Australia, formed in 1910; other notable societies are the Radio Society of Great Britain, the American Radio Relay League, Radio Amateurs of Canada, Bangladesh NGOs Network for Radio and Communication, the New Zealand Association of Radio Transmitters and South African Radio League.
Call signs
An amateur radio operator uses a call sign on the air to legally identify the operator or station.[25]
In some countries, the call sign assigned to the station must always be
used, whereas in other countries, the call sign of either the operator
or the station may be used.[26]
In certain jurisdictions, an operator may also select a "vanity" call
sign although these must also conform to the issuing government's
allocation and structure used for Amateur Radio call signs.[27]
Some jurisdictions, such as the U.S., require that a fee be paid to
obtain such a vanity call sign; in others, such as the UK, a fee is not
required and the vanity call sign may be selected when the license is
applied for.
Call sign structure as prescribed by the ITU, consists of three parts
which break down as follows, using the call sign ZS1NAT as an example:
- ZS – Shows the country from which the call sign originates and may also indicate the license class. (This call sign is licensed in South Africa, and is CEPT Class 1. Where specific classes of amateur radio license exist, the call signs may be assigned by class, but the specifics vary by issuing country.)
- 1 – Gives the subdivision of the country or territory indicated in the first part (this one refers to the Western Cape).
- NAT – The final part is unique to the holder of the license, identifying that station specifically.
To Find Your QTH Locator (See the location on a map)
http://f6fvy.free.fr/qthLocator/fullScreen.php
Formation of an amateur radio call sign
An amateur operator's call sign is composed of a prefix, a separating numeral and a suffix.
The prefix can be composed of letters or numbers, the separating
numeral is one from 0 to 9, and a suffix is from one to four characters
where the last one has to be a letter.
Examples of call signs and their constituent parts are as follows:
Call Sign | Prefix (within ITU assigned range) | Separating numeral | Suffix | format type |
---|---|---|---|---|
K4X | K | 4 | X | 1x1 call sign, usually time limited special event (USA) |
B2AA | B | 2 | AA | 1x2 call sign (China) |
A22A | A2 | 2 | A | 2x1 call sign (Botswana) |
I20000X | I | 2 | 0000X | 1x5 call sign, special event (Italy) |
4X4AAA | 4X | 4 | AAA | 2x3 call sign (Israel) |
3DA0RS | 3DA | 0 | RS | 3x2 call sign (Swaziland) |
Call signs begin with a one- two- or three-character prefix chosen from a range assigned by the ITU
to the amateur's country of operation or other internationally
recognized jurisdiction. This is not necessary always the amateur's
country of citizenship. An individual operator is assigned a unique call
sign beginning with this prefix and then completed with a separating
numeral and suffix.[2]
The beginning of the list of call sign ranges is:
Amateur radio international operation
Amateur radio international reciprocal operating agreements permit Amateur Radio
Operators (Hams) from one country to operate a station whilst traveling
in another without the need to obtain additional licenses or permits.
When no agreement exists between countries, amateur radio operators
are often required to apply for a reciprocal operating permit or a full
amateur radio license and call sign
from the host country. Some countries may accept a foreign amateur
radio licenses as proof of qualification in lieu of examination
requirements[1] whereas other host countries may provide unilateral reciprocal operating privileges without the need for additional licensing.
* this text is available on Wikipedia®. a non-profit organization.
WOSM's voice on the air
The amateur radio station of the World Scout Bureau will be on the
air from Geneva on all short-wave and VHF bands during the full JOTA
weekend with the Bureau’s call sign HB9S. In addition, HB9S uses the
Echolink network to connect to distant radio stations.
The station will be run by an international team of Scout radio
operators as well as Yves, HB9AOF, station manager and Richard, PA3BAR,
World JOTA Organizer.
With a bit of luck, you may be able to make a contact using your
local repeater station and just a portable radio. At HB9S, you can speak
directly with the camp participants and the World Scout Bureau staff.
You may send requests for pre-arranged contacts (skeds) in advance to the station manager by email: jota@scout.org. Please note the propagation predictions when selecting sked times.
Making a contact with HB9S may sometimes take some patience. Usually
many stations are calling at the same time. The operators will do their
very best to make contact with Scout stations worldwide and speak to
Scouts in as many languages as possible.
You can see here on our electronic plot map the actual contacts that
HB9S is making during the JOTA weekend. Also, when one or more of our
transmitters is active, you will see the "On Air" indication on this web
page together with our actual transmit frequency.
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