Which of the following are characteristics of a timeslot in Link 16 communications?

A timeslot in Link 16 communications is characterized by several specific features that are crucial for understanding its role in time division multiple access (TDMA) systems. Each timeslot indeed consists of a specific number of pulses, typically 72, 258, or 444, depending on the configuration and application. This variation allows for flexibility in how communication is structured and the amount of data that can be transmitted within each timeslot.

Additionally, the duration of each timeslot is consistently set at 7.8125 milliseconds. This precise timing ensures synchronization across all participating units in Link 16 networks, which is vital for effective communication and information sharing in joint operations.

Finally, it's important to recognize that a timeslot serves as the basic unit of access in Link 16 communications. This means that all transmissions within the network are organized around these timeslots, allowing multiple users to share the same communication medium efficiently without interference.

Therefore, all these characteristics—specific pulse counts, consistent duration, and function as a unit of access—combine to define the operational structure of timeslots in Link 16, leading to the conclusion that all of the mentioned characteristics are indeed accurate.