What should a station operator do to ensure the frequency is not in use before making a transmission?

To ensure that a frequency is not in use before making a transmission, it is essential for a station operator to check for activity by monitoring the frequency. This allows the operator to listen for any ongoing communications or signals that might be occupying the channel. By actively monitoring, the operator can assess whether the frequency is clear and safe for their transmission without causing interference.

While transmitting a general notification or asking if the frequency is in use may seem like viable options, they do not directly confirm the frequency status. Other operators may not respond promptly or may be unaware of the current activity on the frequency. Thus, the most effective method for determining whether a frequency is clear is to monitor it directly, ensuring proper communication practices and preventing interference with other users.