There are two main types of two-way radios: VHF (very high frequency) and UHF (ultra-high frequency). Both have their advantages and disadvantages. You can select the right one for your needs depending on the application. The transmission distance is determined by the radio frequency. Radio waves travel from one radio to the other in continuous cycles. The frequency of radio waves is measured in hertz or Hz. Kilohertz is the measurement unit for radio waves.
The general life span of two-way radios and their accessories is from five to seven years. The life span of radios depends on the environment where they are deployed. They may fail before more sophisticated or fragile communication equipment. Other factors that may shorten the life span of a radio include local congestion and frequency availability. Moreover, radio signals travel differently through urban viewsheds compared to those in forests. Noise and intermodulation can also interfere with radio signals.
The frequency of a two-way radio system is measured in kilohertz (kHz). One million cycles per second is a thousand kHz. Lower frequencies have longer wavelengths than higher ones. The lower the frequency, the longer the range. Both of these types of radios can be programmed to scan the same channel number. While using a two-way radio, make sure to consider the conditions and range of the radio you plan to use.
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