the fact that such stations require no governmental license. A sending
station, on the other hand, does require a license, and such license
is not granted except upon good reasons being shown. It would be
natural for the government, however, to give Mr. Hampton license to
use a special wave length--such as 1,800 metres--for transoceanic
radio experiments. Extension of the license to the New Mexico plant
would follow.

THE AUTHOR.




DIRECTIONS FOR INSTALLING AN AMATEUR RADIO RECEIVING TELEPHONE


In order that the boy interested in radio telephony may construct his
own receiving set, the Author herein will describe the construction of
a small, cheap set which almost any lad handy at mechanics can build.
Such a set should be sufficiently powerful to permit of successfully
picking up the concerts and other programme entertainments being
broadcasted frequently by stations throughout the country.

Two drawings are given herewith which will enable boys to visualize
the appearance of the set, and will be of aid in following
instructions.

Referring to Figure 1 let us examine first the construction of the
receiving inductance marked L. The latter is shown in detail in Figure
2, and consists of a heavy piece of cardboard. The back of an ordinary