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South African Radio League

South African Radio League is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand South African Radio League rather than just read about it. In short: The South African Radio League (SARL), formerly the South African Radio Relay League (SARRL), is a non-profit organisation representing the interests of amateur radio enthusiasts in South Africa. The SARL advocates to the South African government on behalf of its membership and all licensed amateur radio operators, serving as the national representative for amateur radio.

South African Radio League — main illustration
South African Radio League — illustration

Key takeaways

  • South African Radio League belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect South African Radio League to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of South African Radio League from memory before moving on to harder problems.

Reference excerpt

The South African Radio League (SARL), formerly the South African Radio Relay League (SARRL), is a non-profit organisation representing the interests of amateur radio enthusiasts in South Africa. The SARL advocates to the South African government on behalf of its membership and all licensed amateur radio operators, serving as the national representative for amateur radio. This has included promoting the deregulation and simplification of the amateur radio service and increasing the number of amateur radio operators in Southern Africa. The SARL publicises and promotes the role of amateur radio in society and its use in schools as an entry point into science and technology. The SARL publishes a magazine called Radio ZS twelve times a year. The SARL is the national member society representing South Africa in the International Amateur Radio Union and is a member of IARU Region 1.

History The South African Radio Relay League (SARRL) was formed in 1925 by a number of regional and local radio societies and clubs, some of which had been established around the time of the First World War. At the outset, membership was limited to licensed radio experimenters capable of two-way telegraphic communication by radio. Temporary headquarters for the organisation were established in Johannesburg. The first president to be elected was Joseph White, who had earlier been the chairman of the Transvaal Radio Society. Archival records from the league, including minutes of council from 1933–1973 and a register of members from 1925–1930, are held by the National Archives and Records Service of South Africa. A detailed history of the SARRL's first two years is difficult to trace because the league did not produce a regular publication. The league's first publication, a fortnightly news sheet called "F.O. News", appeared in 1927. While the news sheet was published for about a year, no copies survive in SARL records. QTC was the first printed magazine the organisation issued. The first issue was published in May 1928. The editor was R. S. Perry, A9Z, and the magazine was printed in Durban.

Purpose The objective of the SARL is to encourage, develop, and promote all activities connected with amateur radio, wireless communications, computer science, and radio science. The league also aims to protect amateur radio frequency allocations and to promote international goodwill and understanding. The SARL also promotes recognition for amateur radio in all spheres of society in South Africa.

HAMNET HAMNET is the Emergency Communications division of the South African Radio League. It "provides communications for emergencies and can mobilise experienced communicators who with their own radio equipment will back up official channels or take over when all else fails." According to its training materials, HAMNET's objectives include providing efficient and accurate radio communications during disasters, training members in emergency procedures, and forming an effective national radio network.

Membership Membership of the SARL is open to any person interested in amateur radio. Citizenship or residence in South Africa is not a requirement. Unlicensed members are called "Listeners" and do not have a vote at the Annual General Meeting or other league meetings. Clubs and special interest groups can become affiliated with the SARL, but they do not have a vote; only individual full members do.

Services to members The SARL website provides an online marketplace for members to trade radio and related equipment. Members also have access to a database of assigned South African radio amateur call signs. The SARL offers South African hams an online QSL system to capture and confirm local contacts with fellow radio amateurs. The organisation offers frequent examination opportunities for people seeking to obtain an amateur radio licence. The SARL encourages the full range of amateur radio service activities and facilitates reciprocal and guest licensing. The league also presents a weekly radio programme, Amateur Radio Today, which is broadcast on shortwave frequencies.

Radio ZS

Radio ZS is a journal included with SARL membership. The magazine is currently published electronically twelve times a year and issued on the last day of each month for the next month. The magazine is based in Bloemfontein. The name of the magazine is derived from the radio call sign prefix block assigned to South Africa by the International Telecommunication Union. Most South African amateur radio operators have call signs that begin with the letters ZS. The other call sign prefixes are ZR, ZT and ZU. According to the SARL, the Class A licence, which grants full band privileges, is associated with the ZR and ZS prefixes.

Regulatory advocacy The SARL provides members with a channel for negotiation with the South African regulatory authority for telecommunications, the Independent Communications Authority of South Africa (ICASA). The SARL also gives members the advantage of collective representation and control in all matters affecting amateur radio. The SARL promotes and negotiates a legal and regulatory environment that acknowledges and permits the Amateur Radio Service. The SARL also advocates for access to all amateur radio bands allocated by the International Telecommunication Union (ITU) radio regulations. A notable area of advocacy has been for access to the 5 MHz (60-metre) band. In 2013, ICASA granted the SARL two experimental frequencies at 5250 kHz and 5260 kHz for an eight-month period to conduct propagation research. The research, a joint project with the Kempton Park Amateur Radio Technical Society, studied NVIS performance ahead of the 2015 World Radiocommunication Conference. In a 2017 submission to ICASA regarding the National Radio Frequency Plan, the SARL proposed retaining 5290 kHz for propagation beacons and allocating the band 5350–5450 kHz to amateur radio on a secondary basis.

… excerpt ends here. Continue reading the full article.

Illustrations

South African Radio League: Radio ZS Jul-Sep 2004 issue cover
Radio ZS Jul-Sep 2004 issue cover

Worked examples

Example 1 — a first encounter with South African Radio League

Start with the simplest possible case. Write down what South African Radio League claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to South African Radio League before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about South African Radio League ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of South African Radio League

In research
South African Radio League appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses South African Radio League in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
South African Radio League is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 establishments in South Africa, Clubs and societies in South Africa, International Amateur Radio Union member societies, so understanding it makes those chapters shorter.
In everyday life
Look for South African Radio League outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study South African Radio League in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what South African Radio League means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain South African Radio League out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is South African Radio League in simple terms?

The South African Radio League (SARL), formerly the South African Radio Relay League (SARRL), is a non-profit organisation representing the interests of amateur radio enthusiasts in South Africa. The SARL advocates to the South African government on behalf of its membership and all licensed amateur…

Why does South African Radio League matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study South African Radio League?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on South African Radio League.

Tags

  • 1925 establishments in South Africa
  • Clubs and societies in South Africa
  • International Amateur Radio Union member societies
  • Organisations based in Johannesburg
  • Organizations established in 1925
  • Telecommunications in South Africa

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