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Two-way radios are instruments for communication before cell phones came in the 1980s and 90s. They are commonly used by policemen, security personnel, and event organizers because they work at short distances. Since two-way radios, also known as walkie-talkies, use radio waves, signals are transmitted in the speed of light and in real time.
How Do Two Way Radios Work?
Two radios use frequency bands. If you are planning to use one with another person, a colleague, for example, both of you have to tune in to a single channel, or frequency band. When you need to speak, press the Push-To-Talk (PTT) button. When you are done, you have to “over” to signal that you are finished and that the other person can now start talking.
Why do you have to do that, you may ask. This is because two-way radios can only do one function at a time – either it receives, or transmits signal. You cannot listen and talk at the same time through two-way radios. Its loudspeaker doubles as a microphone when you press the PTT button.
Keep Away From Obstructions
Obstructions are anything that can hinder the signal like tall buildings, trees, or even you! It is not advisable that you keep your two-way radio attached to your waist. Following this logic, highly elevated areas have the least, if not none at all, obstructions.
Use an Antenna
If the situation calls for staying in low areas, you can use an antenna instead. Place your antenna as high as possible to maintain the signal.
Use a Repeater
You can also use a repeater which uses two separate but nearly similar frequencies. This extends the range you can cover, and eliminates the hindrances caused by obstructions.
Two-way radios do not need telephone signals so you can use them perfectly in areas out of mobile telephone network coverage, like in the mountains, rivers, forests, or anywhere away from the city.
