A two way radio is a hand held radio, which can both receive and transmit radio waves, unlike a purely broadcast receiver which just receives transmission. It’s an audio transceiver, a transmitter plus receiver in a single unit, utilised for bidirectional, personal voice communication with others with similar units. These units can be used in cars, boats, computers and mobile phones to communicate between people. In general use, they are used by truck drivers or in military units for communication and other purposes.
A typical 2-way radio may have up to 10 channels, whereas a Walkie Talkie has just two or three. The difference is clear when it comes to frequency usage. A mobile radio uses a single carrier frequency, whereas a base station uses a multiple carrier frequency (like the example of a landline telephone network). So, a mobile radio can only receive transmissions of certain frequencies to and from it. Base stations on the other hand can receive or transmit any frequency within its range.
A 2-way radio usually comes with a power supply and has a holder to hold the batteries. Most of these devices have set wattage output, which lets you adjust how strong or weak the transmission is. These radios use relatively low wattage of power, which is also a contributing factor to their low cost. One great feature of these radios is the fact that they can operate on batteries, even when switched off, so long as there’s some current flowing through them. This is an important feature for those who may travel a lot or stay in campsites or faraway places where there is no electricity.
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