63 STAT.] MIULTILATERA-TELECOMMUNICATIONS-OCT. 2, 1947 (Chapter I, art. I RR) (4354) stations. In certain instances an aeronautical station may be placed on board a ship. 43 Base Station: A land station in the land mobile ser- vice carrying on a service with land mobile stations. 44 Mobile Station: A station in a mobile service in- tended to be used while in motion or during halts at unspecified points. 45 Ship Station: A mobile station in the maritime mobile service located on board a vessel which is not perma- nently moored. 46 Aircraft Station: A mobile station installed on board any type of aircraft and continuously subject to human control. 47 Land Mobile Station: A mobile station in the land mobile service capable of surface movement within the geo- graphical limits of a country or continent. 48 RadiolocationStation: A station in the radiolocation service. 49 RadionavigationStation: A station in the radionavi- gation service. 50 Radionavigation Land Station: A station in the radionavigation service not intended for operation while in motion. 51 Radionavigation Mobile Station: A station in the radionavigation service intended to be used while in motion or during halts at unspecified points. 52 Radio Direction-Finding Station: A radiolocation station intended to determine only the direction of other sta- tions by means of transmissions from the latter. 53 Radiobeacon Station: A radionavigation station the emissions of which are intended to enable a mobile station to determine its bearing or its direction in relation to the radio- beacon station. 54 StandardFrequency Station: A station in the stand- ard frequency service. 1589
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