The transmission system proposed in this review wasn't very practical, but the thoughts about what could be achieved by a radio broadcasting system were very advanced for the time.
Electrical World, April 13, 1911, page 923:
SIMPLIFIED WIRELESS TELEPHONY.
By M. FREIMARK.
So little has been heard of late from wireless telephony that it almost seems as if the art were entirely forgotten, or at least that it does not make any progress. It therefore gives the writer pleasure to bring out a few facts which he has observed and which he hopes will be followed up.
In the spring of 1910, while making experiments to devise a method for locating open circuits in insulated and concealed wiring, it was found that the human body acts as an excellent antenna and detector and responds remarkably to the slightest excitation from electromagnetic waves or static induction. Having perfected this method for localizing breaks in telephone, wiring, a close resemblance was observed between the apparatus and a miniature wireless-telegraph sending station. The details of the apparatus, fortunately, were of a simpler and, necessarily, of a different design from those of a wireless station owing to the fact that neither a deafening spark nor high-tension currents can be tolerated on telephone lines or cables, as they would seriously interfere with transmission and insulation, and would carry beyond the break and possibly cause injury and damage to subscribers and property.
The sending outfit being identical--from a purely theoretical point of view--in the two cases, one could not help thinking why the receiving station should not be the same, and why, in particular, it should not be used for wireless telephony. To this end it was necessary merely to change the sending station to a talking circuit. An operator's telephone set answered the purpose. A few dry cells were put in series with the transmitter and the primary side of the induction coil. One terminal of the secondary was grounded, the other one serving as the sending antenna, as indicated in the accompanying illustration. The receiving station consisted of nothing more or less than a telephone receiver with one terminal connected to the body (ear or finger) and the other one to a wire which trailed on the ground or was directly connected to ground for the purpose of better receiving. The results were as anticipated. The sounds were audible a few feet from the antenna.
Further experiments with a phonograph, in connection with a small step-up coil, such as is used in wire-telephone practice, brought out the fact that the phonograph could be heard through the receiver anywhere in a good-sized living-room when the wire was concealed under the rugs. Metal, such as a brass bedstead or a tin roof, readily takes up the waves, acts like a sounding board and gives them off with seemingly increased strength.
The writer could not make any further investigation on the subject. It seems, however, that good results could be obtained by taking into account the standard methods and apparatus which wire-telephony has established and which have reached such a high degree of development.
It is doubtful whether a transmitter of the present type will ever be developed to withstand currents strong enough to serve directly for wireless transmission. However, there is no doubt that combinations of this transmitter with generators, transformers, arc lamps or coils can be made which will be able to transmit sound within the limits of any city, and for overland or oversea transmission very high frequency waves can be used as the carrier.
Like present-day telegraphy the method described has the disadvantage of publicity, and even more so since anybody equipped with a receiver can pick up the message; for the same reason it also has the good side--though it is only one-way transmission--that it is accessible to everybody, rich or poor.
A city equipped with such a station could, for example, send out orders to the whole police force in an instant, publish election or ball-game returns, give free concerts to the whole population and accomplish a good many other things which would tend to better the social life of its citizens.