Artikel 136

(1) The radiotelegraph station shall be so located that no harmful interference from extraneous mechanical or other noise will be caused to the proper reception of radio signals. The station shall be placed as high in the vessel as is practicable, so that the greatest possible degree of safety may be secured.
(2) The radiotelegraph operating room shall be of sufficient size and of adequate ventilation to enable the radiotelegraph station to be operated efficiently, and shall not be used for any purpose which will interfere with the operation of the radiotelegraph station.
(3) The sleeping accommodation of at least one radio officer shall be situated as near as practicable to the radiotelegraph operating room.
(4) An efficient two-way system for calling and voice communication shall be provided between the radiotelegraph operating room and the wheelhouse and one other place, if any, from which the vessel is navigated and which shall be independent of the main communication system of the vessel.
(5) The radiotelegraph station shall be installed in such a position that it will be protected against the harmful effects of water or extremes of temperature. It shall be readily accessible both for immediate use in case of distress and for repair.
(6) A reliable clock with a dial not less than 125 millimetres in diameter and a concentric seconds hand, the face of which is marked to indicate the silence periods prescribed for the radiotelegraph service by the Radio Regulations, shall be provided. It shall be securely mounted in the radiotelegraph operating room in such a position that the entire dial can be easily and accurately observed by the radio officer or radio operator from the radiotelegraph operating position and from the position for testing the radiotelegraph auto alarm receiver.
(7) A reliable emergency light shall be provided in the radiotelegraph operating room, consisting of an electric lamp permanently arranged so as to provide satisfactory illumination of the operating controls of the radiotelegraph station and of the clock required by paragraph (6). This lamp shall, if supplied from the reserve source of energy, be controlled by two-way switches placed near the main entrance to the radiotelegraph operating room and at the radiotelegraph operating position, unless the layout of the radiotelegraph operating room does not warrant it. These switches shall be clearly labelled to indicate their purpose.
(8) Either an electric inspection lamp, operated from the reserve source of energy and provided with a flexible lead of adequate length, or a flashlight shall be provided and kept in the radiotelegraph operating room.
(9) The radiotelegraph station shall be provided with such maintenance manuals, spare parts, tools and testing equipment as will enable the radiotelegraph station to be maintained in efficient working condition while at sea. The testing equipment shall include at least a portable multimeter capable of accurately measuring alternating currents and voltages, direct currents and voltages, and resistance values likely to be encountered in servicing the station.
(10) If a separate emergency radiotelegraph operating room is provided the requirements of paragraphs (4), (5), (6), (7) and (8) shall apply to it.