The radios are one of the first types of communication to be invented that are still used in the modern age. The main reason for this is due to the ease of use and low cost it takes to use it. They are a very important component of many companies, such as the construction industry.
In the construction industry of the person operating the crane is very high and most challenging, away from the site manager and give instructions below. Some people may suggest the use of mobile telephones for communication, but the cost per day would be too high to be a viable option. Instead you can use a radio for communication, it would be very cheap, in fact anything that price is the initial cost of the radios in the store. If you decide to buy a radio and then make sure it is rechargeable, such as buying multiple batteries a week for the use of radio is also very expensive.
When in pursuit of a criminal use of radio communications to coordinate police about the suspects in order to increase their chances of overtaking him. Can also be used to request backup and is one of the first things that are used when a dangerous situation. This just goes to show how important these devices are for this type of work, without them many different causes would have to be changed in order to perform the work at the same level.