Which statement regarding GMDSS MF/HF Transceiver frequency set-up is true?

The correct statement regarding GMDSS MF/HF Transceiver frequency set-up is that using the manufacturer's database typically produces quicker results. This is due to the fact that manufacturers design their databases specifically to streamline the selection and configuration of frequencies for communication. Accessing the database allows operators to quickly recall preset frequencies that comply with legal and operational standards, minimizing the time spent inputting frequencies manually.

In contrast, relying on manual keypad entries can often lead to a longer setup time, as it involves inputting values individually, which can be both time-consuming and prone to human error. While some consoles may offer features to check manual entries, this is not standard across all systems, and thus option B does not universally apply. Additionally, it’s important to note that while recalling from a database can be efficient, the outcomes from such recalls regarding legality are contingent upon the system's compliance mechanisms rather than being guaranteed, which makes option C misleading. Therefore, utilizing the manufacturer's database is emphasized as a best practice for efficient and effective operation in GMDSS setups.