What role does the frequency spectrum play in communication systems?

The frequency spectrum plays a crucial role in communication systems as it defines the range of frequencies available for transmission. Each communication system is allocated specific frequency bands within the spectrum, which governs how and where signals can be transmitted. Different frequencies can carry varying amounts of information and can be affected differently by environmental factors, such as obstacles and atmospheric conditions.

Understanding the frequency spectrum allows for effective allocation of frequencies to ensure minimal interference between different communication systems. This avoids overlapping channels and enables multiple users to share the communication medium simultaneously without significant degradation of service. By defining the operational limits, it ensures that communication can be conducted over various distances and through different mediums, maximizing the effectiveness of communication technologies.