To put it simply, a two way radio similar to that sold by 2wayradionline.co.uk is a device
that can both receive and transmit voice messages. In broader terms, it can be
said that most wireless communication, and it may include cellular systems,
fall under the definition. However, these days, 2 way radio is a term to
describe radio system for group call communication. The two way radio comes in
several technical names such as Public Access Mobile Radio, Private Mobile
Radio, Land Mobile Radio and Professional Mobile Radio. These present times, 2
way radios are often called "walkie talkies". There are several kinds
of two way radio systems and some are able to make use of base and mobile
configuration, while some re able to utilize a radio network infrastructure.
A typical 2 way radio includes a PTT button, also known as Push-To-Talk
button. The button activates the transmitter and the user simply needs to talk
to the device to start communicating. The user must release the PTT button in
order to receive transmissions from the other line.
A two way radio is able to communicate with other radio devices.
However, direct radio communication has very limited range. To overcome the
problem, a radio network infrastructure may be used to extend the range of
communications. The rest of the article is going to cover more details about
how 2 way radios work and other useful information.
Receiving Radio Waves
Just like other forms of Wireless communications, a 2 way radio sends
messages over the air. In order to achieve this, the antenna of a way radio
contains a specific set of electrons. If the two way radio features multiple
channels, then there is specific sets of electrons are each channel. Whenever a
radio transmission is received by the 2 way radio, the electrons get excited.
The electrons then create electrical impulses. Electrical impulses are then
sent to a small processor, which will then convert the electrical impulses to
words and sounds that can be understood by humans. The sounds are produced by
the speakers within that the way radio.
Keep in mind that there are always radio
waves are floating in the air. Because of it, there is always a nondescript
sound that may be produced by the two way radios. To solve the issue, a lot of 2
way radios feature a "squelch" setting; and with it, the user can
adjust the signal threshold for clearer communications.
Sending Transmissions
Two way radios can also send messages across the air. The main idea is
to convert the sound to radio waves. However, the defining characteristic about
the way radio is its ability the convert back the radio waves back to legible
sounds.
Whenever a user speaks into a 2 way radio, a membrane within the device
will vibrate as a response to the sounds. The vibrations are sent to the
processor, which in turn converts them to electrical impulses and readies it
for transmission.. Finally, the transmission is sent to the antenna which is
then broadcasted in the form of radio waves. These radio waves are then
received by another device and convert them back to a legible sound.
Multiple Channels
As two way radios are getting more and more popular, it is possible for
more than one party communicating in the same line or frequency. This can cause
a lot of confusion and interference. To solve the problem, modern 2 way radios
are able to utilize multiple channels.
For a two way radio to broadcast on multiple channels, the device must
be able to generate radio waves in multiple frequencies. Furthermore, the
device must be able to send frequencies with very little fluctuations. These
fluctuations are actually caused by the transmitted voices. The fluctuations
can be minimized through “frequency modulation”. The modulated transmissions
are then sent to the device’s antenna.
The device must also excite the proper electrons. Once the proper
electrons are excited, an outgoing radio wave is then produced.
These radio waves may be picked up by another device tuning into the
same frequency. Furthermore, the device must be within range of the
transmitting device. The range of two way radio is usually determined by a
couple of factors such as atmospheric conditions, radio’s battery power and the
size of the two-radio's antenna.
Whenever a device picks up the transmission, the receiving radio must
filter the signals through an electronic filter known as a bandpass filter.
Finally, the transmission is then converted back to sound.
Why Choose A 2 Way Radio
The two way radio is one of the earliest forms of wireless
communication. However, in today's modernized communication environment, a
question arises - is the way radio a viable technology? The answer to that
question is a yes. This is because the 2 way radio has its own unique
advantages that may not be found in other forms of wireless communications.
Below are two of them:
Instant Communication - the ability to communicate between two or more
parties almost instantly is one of the most defining advantages of the two way
radio. A user only needs to press the “Push-To-Talk” button and within seconds
a receiver will be able to receive the audio messages. Furthermore, the entire
system is set up around the idea of "quick call" and "quick
receive". This is the main reason why the organizations rely on the 2 way
radio technology for operational and tactical communications. The system can
also make use of encryption technology for a more secure communication.
Group Communications
Another unique advantage of two way radio is its ability to facilitate
"group call" or "one-to-many" communications very
efficiently. By efficient, it means that the user can communicate with one,
hundreds or thousands at the same time. There is no need for a user to repeat
the same message if he/she needs to communicate to more than one
individual.
A 2 way radio is one of the earliest technologies used for wireless
communications. Even though it is a bit outdated compared to other forms of
wireless communications, but the usefulness is still very applicable today. The
main idea of how 2 way radios work revolves around on sending and receiving
radio waves, which in turn is converted to legible sounds. The idea and
technology behind two way radio may be simple, but nevertheless it is still a
very well-used form of communication in today’s world.
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