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The March of Radio
463
the same that is used by an ordinary fifty-watt lamp.
It seems incongruous to incorporate a crystal rectifier in a modern receiving set; we have
facturer will probably see their sales fall away to some extent, but the radio public — at least that part of the public which can afford to maintain a seven-tube receiving
Courtesy A. I. E. E. Journal
REPLACING
AND B BATTERIES
This equipment, developed by the Bureau of Standards, does away with batteries for reception. Six tubes are employed in addition to a crystal detector. The Bureau is working on a device which will make use of a vacuum tube in place of
the crystal
thought that crystals were due to go into the discard, but this apparatus apparently gives them a new lease on life. Developments are being carried out in the tube laboratories, however, which will soon give us a tube of peculiar construction such that it may fill the place occupied by the crystal in this latest amplifier circuit.
With this new tube available, the bureau will undoubtedly substitute it for the crystal rectifier and this amplifier of Lowell's will then be the most convenient outfit we have seen. The dry cell and storage battery manu
set — will be greatly benefited by this new apparatus.
ARBITRATION SOCIETY OF AMERICA MAY END RADIO DISPUTES
ALTHOUGH the founding of this society L has nothing directly to do with the present progress of radio, it is not at all impossible that some of the wrangles, necessarily occurring in an art going forward at such a rapid rate as is radio, may find their way into the court of the Arbitration Society and thus be settled much more expeditiously and fairly than is the