science

Radio communication station

Radio communication station 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 Radio communication station rather than just read about it. In short: A radio communication station is a set of equipment necessary to carry on communication via radio waves. Generally, it is a receiver or transmitter or transceiver, an antenna, and some smaller additional equipment necessary to operate them.

Key takeaways

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

Reference excerpt

A radio communication station is a set of equipment necessary to carry on communication via radio waves. Generally, it is a receiver or transmitter or transceiver, an antenna, and some smaller additional equipment necessary to operate them. They play a vital role in communication technology as they are heavily relied on to transfer data and information across the world. More broadly, the definition of a radio station includes the aforementioned equipment and a building in which it is installed. Such a station may include several "radio stations" defined above (i.e. several sets of receivers or transmitters installed in one building but functioning independently, and several antennas installed on a field next to the building). This definition of a radio station is more often referred to as a transmitter site, transmitter station, transmission facility or transmitting station. An example of this definition is Bethany Relay Station of the Voice of America which had seven broadcast transmitters and could broadcast up to seven independent programs (even produced by different broadcasters) simultaneously, as well as several communications transmitters and receivers.

ITU definition The International Telecommunication Union, defines a radio (communication) station as - «one or more transmitters or receivers or a combination of transmitters and receivers, including the accessory equipment, necessary at one location for carrying on a radio communication service, or the radio astronomy service. Each station shall be classified by the service in which it operates permanently or temporarily».

Equipment Transmitter - Takes the electrical output of a microphone and then modulates a higher-frequency carrier signal and transmits it as radio waves. Receiver - The broadcast message is received by the receiver and decodes the radio sine waves. Antenna - An antenna is required for transmission; it is also required to receive radio waves. The main use of an antenna is to send radio signals. Aerial feeder - system of feeding HF-Energy (power) in the antenna Transmission lines - Transmission lines are used to transfer the radio signals to other locations. Connectors Interface panel remote control – This is used to connect various different types of the equipment used in a radio station. To input broadcast data into a transmitter an interface panel will need to be used. Cable – A cable can be used to connect the various devices. Equipment Rack – To hold all equipment in a secure and logical manner, an equipment rack will be used. Power protection equipment – For holding equipment's in a stable, secure and logical manner. UPS – For uninterrupted power supply. These are the most used/important devices and items for most radio stations.

Antennas A microphone is used to capture the input of sound waves created by people speaking into the device. The sounds are then turned into electrical energy; this energy then flows along a metal antenna. As the electrons in the electric current move back and forth up the antenna, the current creates an invisible electromagnetic radiation in the form of radio waves. The waves travel at the speed of light, taking the radio program (voices recorded) with them.

Transceiver A compound of both a transmitter and a receiver is called a transceiver, they are combined and share common circuitry or a single housing. Technically transceivers must combine a significant amount of the transmitter and receiver handling the circuitry.

Radio frequency list Possible Frequency allocations, allotments & assignments

Broadcasting service (AM sound broadcasting) - 535 to 1606.5 kHz Broadcasting service (HF sound broadcasting) - bands from 5.9 to 26.1 MHz Mobile service (citizens band radio) - 26.96 to 27.41 MHz Amateur Radio Service [Public Service & Emergency Radio Services] (Ham Radio) - bands from 135.7 kHz & up Broadcasting service (television, channels 2 through 6) - 54 to 88 MHz Broadcasting service (FM sound broadcasting) - 88 to 108 MHz Broadcasting service (television, channels 7 through 13) - 174 to 220 MHz FIXED SERVICE, MOBILE SERVICE, (generic frequency allotment) garage door opener - around 40 MHz MOBILE SERVICE (generic frequency allotment) standard digital cordless phones (DECT) - 40 to 50 MHz MOBILE SERVICE baby monitors - 49 MHz MOBILE SERVICE radio controlled airplanes - around 72 MHz Mobile service cell phones - 824 to 849 MHz Space research service (deep space) - 2290 MHz to 2300 MHz

Worked examples

Example 1 — a first encounter with Radio communication station

Start with the simplest possible case. Write down what Radio communication station 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 Radio communication station 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 Radio communication station 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 Radio communication station

In research: Radio communication station 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 Radio communication station 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: Radio communication station is common in secondary-school and first-year university syllabi. It links to neighbouring topics Radio, Radio stations, Radio stations and systems ITU, so understanding it makes those chapters shorter.
In everyday life: Look for Radio communication station 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 Radio communication station in 20 minutes

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

Frequently asked questions

What is Radio communication station in simple terms?

Why does Radio communication station 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 Radio communication station?

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 Radio communication station.