Which statement regarding bandwidth and channel spacing is correct?

The correct statement is that channel spacing values are a function of bandwidth values. This means that the amount of bandwidth allocated for a specific type of transmission directly influences how the channels are spaced apart.

In radio communications, bandwidth refers to the range of frequencies occupied by a signal, while channel spacing is the distance between the center frequencies of adjacent channels. To minimize interference between those channels, channel spacing must be wider than the bandwidth to ensure that transmissions do not overlap. Thus, the allocation of bandwidth typically dictates how closely channels can be spaced.

By ensuring that channel spacing accommodates the necessary bandwidth for each signal, communications can operate efficiently without interference, leading to clearer transmissions. This relationship is fundamental in frequency management and regulatory practices in telecommunications and broadcasting. The other options do not accurately represent the relationships between bandwidth and channel spacing as used in communication systems.