radiocommunication service with and for the benefit of aircraft. Aircraft station means a radio station continuously subject to human control which is installed in an aircraft. Amateur station means a radio station worked by a person interested in the technique of radiocommunications solely with a personal aim and without pecuniary interest. Base station means a radio station established on land and used for the purpose of carrying on a radiocommunication service with mobile stations. Coast station means a radio station established on land and used for the purpose of carrying on a radiocommunication service with and for the benefit of ship stations. Community repeater means a radio station of special type with a base station in which the antenna system is strategically located on a high building, tower or some other elevation to receive a signal from a fixed, mobile or portable station for retransmission to other fixed, mobile or portable stations. mobile radiocommunication station Fixed station means a radio station used for the purpose of carrying on a radiocommunication service between specified points. Meteorological aids Mobile station means a radio station used for the purpose of transmitting special signals intended solely for meteorological and hydrological observations and exploration. 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 a view to the development of the science and technique of radiocommunications, but does not include an amateur station. station station Radiobeacon station means a radio station the emissions of which— (a) (b) 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 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 45