Retransmission of signals for a remote station system can be accomplished by which of the following means?

Retransmission of signals for a remote station system can indeed be accomplished by a variety of means, and recognizing this is essential for understanding how fire alarm communications function in different contexts.

A dedicated circuit serves as a reliable method for signal transmission, ensuring that the communication path is exclusively reserved for fire alarm signals. This reduces the likelihood of interference and enhances the reliability of the system.

One way telephone systems can also be used, where signals can be transmitted from the remote alarm system to a central monitoring station without the need for bidirectional communication. This method can be straightforward and cost-effective.

Private radio transmission offers a wireless alternative that is particularly useful in areas where physical wiring is impractical or where quick deployment is required. Utilizing licensed frequencies ensures that the signals are transmitted securely and without interference from non-licensed users.

Therefore, all of these methods—dedicated circuits, one way telephone communication, and private radio transmission—are legitimate options for retransmitting signals from a remote fire alarm system to a monitoring station, making 'All of the above' the appropriate choice. Each method has its own specific application scenarios and benefits, making it crucial to understand the various means of communication in fire alarm systems.