be so located that no harmful interference of mechanical, electrical or other origin affects its proper use, and so as to ensure electromagnetic compatibility and avoidance of harmful interaction with other equipment and systems;

be so located as to ensure the greatest possible degree of safety and operational availability;

be protected against harmful effects of water, extremes of temperature and other adverse environmental conditions;

be provided with reliable, permanently arranged electrical lighting, independent of the main and emergency sources of electrical power, for the adequate illumination of the radio controls for operating the radio installation; and

be clearly marked with the call sign, the ship station identity and other codes as applicable for the use of the radio installation.