16the National Radio Exhibition ("Radiolympia") - A Four-valve Superhet Receiver moulded in two identical halves, allowing the receiver to be used in a central position in room without showing an untidy back. Even the turning scale is duplicated. Price ?14. 1. 1d. (including tax) (Murphy Radio Ltd.). The 16th National Radio Exhibition ("Radiolympia"). The 16th National Radio Exhibition (Radiolympia") held at Olympia, London, has been organised by the Radio Industry Council, representing all branches of the British radio, television and electronic industries. February 09, 1950. (Photo by Sport & General Press Agency Limited).