International Radio

Radio Record, Volume III, Issue 24, 27 December 1929, Page 15

International Radio

AN interesting experiment and one . With far-reaching possibilities was made in Berlin recently when an ‘attempt was made to transmit photographs from a ground station to an aeroplane in full flight. The first radiograph to be sent was a weather map showing the meteorological conditions the flying machine would eneounter over the regular: air route from Berlin to Paris, the second showed: storm conditions, and the third the rain-soaked locality where the ‘plane would land. The reception, which took place on an ordinary wireless set equipped with a Fultograph apparatus, five minutes after the pictures were dispatched, was of excellent quality. [t= is surprising to learn that the small island of Cuba has as many as ninety-four radio stations, which are used for both telegraphic and _ telephonie broadcasting, though the num‘ber of stations for telephonic transmission is far in excess of the other type. Owing to the super-abundance of stations operating, it has been found necessary to make new wavelength allocations. The measure has been taken, of course, to ensure that in future there will be no interference among them,