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RADIO BROADCAST
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AN AMATEUR RADIO CONVENTION
The members of the first amateur radio convention from the states around the District of Columbia at the Arlington Station
© Harris & Ewing
Messages sent out from Amsterdam can be received by the whole of Holland.
Radio and Airways
RADIO and aviation go hand in hand. Certainly, aviation on anything like a practical scale needs radio, and needs it in the most emphatic sort of way. So it is not surprising to learn that the Army Air Service is now engaged in constructing and installing permanent radio stations at Mitchell Field, Long Island; Langley Field, Hampton, Va.; Langin Field, Moundsville, W. Va.; and Wilbur Wright Field, Fair-field, O. Those at Moundsville and Fairfield are to be spark sets of 5-kilowatt capacity, while those at Mitchell Field and Langley Field will be continuous wave tube sets of approximately 3-kilowatt capacity. The purpose of these stations will be to keep airmen posted as to weather conditions existing along their routes. According to Captain Oliver S. Ferson, it is hoped that the inauguration of this system of inter-communication between Air Service fields and stations will obviate the possibility of a recurrence of
accidents similar to that which occurred at Morganville, Va., when a number of lives were lost as a direct result of an airplane flying into a storm of which it had no previous knowledge. The Air Service contemplates the extension of this radio set to include eventually every Air Service field and station in the United States.
The Beginning of Radio Broadcasting in England
THE first of a series of regular wireless telephone transmissions, as radiophone broadcasting is called by our British cousins, took place recently, for the benefit of the English radio amateurs. The Marconi Scientific Instrument Company prepared a fifteen-minute musical programme for the occasion. The first telephone selection was radiated from the Marconi station at Writtle on a wave length of 700 meters. This was preceded by a series of radio telegraph signals for calibration purposes on 1,000 meters. The power employed for radio telephony is limited to 250 watts in accordance with the terms of the Post Office license.