How are communication systems classified?

Communication systems can indeed be classified based on their operating frequencies, which is a crucial aspect that affects their range, bandwidth, and propagation characteristics. Frequencies determine how signals travel through various mediums such as air, vacuum, or cable. Different frequency ranges have specific applications; for example, low frequencies are typically used for long-range communication, while high frequencies can carry more data over shorter distances.

Classifying communication systems by their operating frequencies allows engineers and technicians to design systems that are optimized for their intended use, ensuring appropriate performance in diverse scenarios including radio, television, satellite communications, and mobile networks. This classification helps in selecting the right technology to effectively transmit information over various distances and through different mediums.

While modulation type, geographical coverage, and power levels are important criteria for understanding and designing communication systems, the initial classification by operating frequencies lays the foundation for all subsequent design and operational choices within the field of communications.