79 Mobile station means a radio station capable of use whilst in motion or during halts at unspecified points and includes those radio stations commonly known as “walkie-talkies”, but does not include an aircraft station or ship station. Model control station means a radio station used for the purpose of controlling models. Press station means a radio receiving station used for the purpose of receiving news broadcasts from recognized press agencies. Private experimental means a radio station utilizing Hertzian waves in experiments with station a view to the development of the science and technique of radiocommunications, but does not include an amateur station. Radiobeacon station means a radio station the emissions of which— (a) are intended to enable a mobile station, aircraft station or ship station to determine its bearings or direction in relation to the radiobeacon station; or (b) provide information solely as to the position or identity of the radiobeacon station. Radio control station means a radio station used for the purpose of controlling mechanism or other apparatus which is not installed in a model. Radio location station means a radio station used for the purposes of— (a) determining the relative direction, position or motion of an object; or (b) the detection of an object;; by means of the constant velocity or rectilinear propagation characteristics of Hertzian waves. Ship station means a radio station installed in a vessel which is not permanently moored.