Economic: for mobile users, the use of walkie-talkie, the annual need to pay is the Frequency usage fee; the use of mobile phones, you need to pay is a call charge for each call. For the more frequent users, the comparison of the two costs, you can draw the conclusion of what is affordable . In addition, the world have set aside a free public band, the use of free public band radio, without the application, without paying royalties, making the use of walkie-talkie more economical.
Convenient: In the communication range, according to the frequency set by the radio, press the launch button to call, Set up Group Call as required, while achieving one or several people or more intercom, ideal for factory Property management construction and other aspects of use.
Suitable for the environment: the current mobile communication network and fixed telephone network, there are many areas that have not yet been covered, such as remote rural forest pastoral waters, need to add a walkie-talkie.
How the intercom works
For a radio to operate, a transmitter is required to transmit a signal and a receiver to receive the signal. In the transmitter, the microphone converts a voice signal into an electrical signal, because the electric signal is very weak, too low frequency, can not be sent too far. The transmitter processes and amplifies these audio signals into radio signals that are transmitted through the antenna into the air. Antennas receive radio signals, and then sent to the receiver, the receiver will convert these radio signals into the original audio signal, and then passed to the speaker, and then you can hear the original sound information. The transmitted signal and the received signal are converted by the antenna changeover switch. Both the transmitter and the receiver are powered.
Hand-held radio products
Hand-held radio is a small, portable walkie-talkie allows users to carry . In the machine's packaging generally include: Host: including transmitter receiver built-in microphone and speaker; Battery: provide walkie-talkie power, can generally provide Different capacity and specifications of the options; Antenna: receive and transmit radio signals, the antenna for the frequency band and host the same frequency band;
External ear microphone: Optional accessories, ear hanging or earplugs.