How does a walkie talkie work?
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Posted On :
Nov-29-2014
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Article Word Count :
576
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A walkie talkie is a hand held radio transmitter receiver that helps in communication between two locations. Though it is similar to a cell phone, few features of walkie talkies make it a much preferred choice when compared to other modes of communication. Most of us would have used a walkie talkie or at least seen some one use them.
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What is a walkie talkie?
A walkie talkie is a hand held, portable radio communication device that can be used to connect between a transmitter and one or more receivers. They are battery powered and do not require a network signal to work, unlike a mobile phone.
Walkie talkies work on a half duplex channel. This means that while there can be only one transmitter sending signals, one or more receivers can listen to it at the same time.
Physical Features
A typical walkie talkie contains a small portable body with an antenna to receive signals, a speaker to hear the voice signal and a microphone to speak. They are identified by the push-to-talk button which needs to be pressed every time a person needs to speak and released to hear from the other side.
Based on the requirement, they also come with additional features to help the user. TalkPRO is a top player in the handie talkie field and along with the basic features, they offer other specifications like a high powered torch, dust resistant, water resistant, bullet proof body, long lasting batteries and other additional accessories like a multi unit charger, adapter, noise cancelling headsets, surveillance accessories etc.
Frequency Bandwidth
All walked talkies work on a pre defined frequency bandwidth. This can be a free range allowed by the government (27 MHZ) or paid channels (around 350 MHZ). TalkPRO, for example, works on the 350 MHZ bandwidth with 16 channels. This gives the user a lot of options for communication. Few channels can be dedicatedly used for a single receiver, making it private, while few channels can be grouped based into different units.
Working
• A user who wants to communicate first presses the push-to-talk button
• He then speaks through the microphone
• The analog voice signal is superimposed onto a carrier wave
• This radio signal is now transmitted across the specific channel
• The receiver’s antenna captures the signal
• The carrier wave is now separated from the actual analog signal
• The receiver’s push-to-talk button is released
• The receiver can hear the voice signal through the speaker
Every time a transmitter needs to say the word ‘Roger’ marking the end of the signal and releases the push to talk button. To make this process easier, TalkPRO comes with an in-built ‘Roger beep tone’ that is transmitted at the beginning and end of every conversation.
Uses of walkie talkies
Walkie talkies are now being used in a variety of fields as they are much cheaper and work even in places where there is no network signal for a mobile phone to work. The Armed forces, Police and Fire fighters, railway and airport in-charge personnel, security networks around the world, hotels, resorts, large industries etc. are all regular users of this device.
How does walkie talkie benefit the common man?
• For people living in large houses, walkie talkies can ensure easier communication between its residents.
• They are a perfect choice for communication during family trips, vacations
• They are ideal to be used in trekking as mountains and other rough terrains are usually not connected by mobile network
• With the development in long distance internet connectivity, walkie talkies can even connect between two different cities and can be used as effectively as one uses a mobile phone, with just a fraction of its cost incurred.
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Article Source :
http://www.articleseen.com/Article_How does a walkie talkie work?_308040.aspx
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Author Resource :
Iconet, India’s oldest radio communication company adds another feather in its bonnet with the success of TalkPRO-a one if its kind walkie-talkie developed in 2010. Considered to be the best in manufacturing walkie talkies and accessories which are high quality and greatly supporting, it has helped millions of customers around the world and clearly stands out from the rest of its competitors in terms of quality, reliability and cost.
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Keywords :
walkie talkie, walky talky, wireless walkie talkie, walky talky price, long range walkie talkie, walky talky india, walkie ta,
Category :
Communications
:
Satellite Radio
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