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RADIO BROADCAST
141
The News of Dec. 18, 1921, commented on this as follows:
"The receiver is not a very appreciative instrument, at least in appearance. One can't tell from the looks of the telephone whether his number is liked or not.
"This was quite baffling to Ernie Ball. He sang one or two of his most popular numbers, heard no applause and finally looked at the telephone in a manner that registered blind rage. And then he stuck out his tongue at the instrument which seemed to relieve his feelings a lot, for he swung immediately into another selection.
" In the case of Mr. Tinney, it was hard to convince that personage that this phenomenon was actually happening. Again and again he demanded to know if the thing were on the square, it was that uncanny. Of all the entertainers who appeared last week, Mr. Tinney probably suffered the most because of the absence of applause. The nature of his offering was such that it was almost necessary for him to have some demonstration of how folks liked what he was saying. This demonstration in all cases was not long in coming, for, at every concert, some of the appreciative listeners in flashed back their thanks and asked for more."
On the first of February of this year the installation was completed by the Western Electric Company of a 500 watt, 300 to 600 meter broadcasting set of the same type now being completed for the American Telephone and Telegraph Company on the roof of the Walker Lispenard Building, New York. Its power comes from two generators, one of 1400 and the other of 1500 volts, harnessed to a 5 H. P. DC motor. It is equipped with a specially high quality speech input arrangement, such as that used by President Harding at Arlington Cemetery last November, in which two No. 212-250 watt Western Electric uum tubes were used as oscillators and two •e used as modulators, ne peculiarity about this set is the fact that, although it is only of 500 watt power when not in use, its power rises to 750 watts when
Aerial terminal on Detroit News Building
subject to conversation or music. Another feature is the fact that the power panel is entirely devoid of live points on its surface. All of the switches are concealed.
Since the transmitter used in the speech input section of the device is not as sensitive as the ordinary type, a Western Electric amplifier is used, which magnifies the voice about a hundred thousand times without producing any distortion.
This installation has an ordinary broadcasting radius of 1,500 miles, but reports have been received from points 2,300 miles away telling of successful receiving. The set was built to the special order of the News and is the only one of its kind thus far completed by the manufacturers. With this splendid equipment the News plans future radio activities on an even more elaborate scale than has thus far obtained.