Railway Wireless

Radio Record, Volume III, Issue 44, 16 May 1930, Unnumbered Page

Railway Wireless

New French System HE inauguration of the first railway wireless service on French trains took place recently when a special train left Paris for Rouen carryeasion by the State Railway Departing over 200 people invited for the ocment. The train consisted of seven coaches, each containing nine compartments capable of seating eight people. An aerial was stretched along the roof of the second coach, and a _ similar

aerial along the roof of the third coach, beneath which was a second wire extending along one-third of its length. and used as a counterpoise. The object of these aerials is to send and receive telegri.ms on short waves during the journey. One compartment in each of these coaches was fitted up with the receiving and transmitting sets, a gramophone pick-up, and a large frume mounted inside a second large frame which can be tuned independently. A seven-valve superheterodyne set is used for broadcast reception. Bach compartment is fitted up with eight plugs for earphones, which are procured from the radio agent on the train. A power amplifier working in conjunction with a gramophone pickup has also been installed in a special radio van, and when reception is poor. passengers are entertained by selections of gramophone records which are announced by the train announcer before and after each record.