TACK

CHAPTER XXVII - SENORITA RAFAELA

CHAPTER XXVIII - THE FAIR TRAITRESS

CHAPTER XXIX - THREE CHEERS FOR THE RADIO BOYS

CHAPTER XXX - GOOD NEWS FOR ANXIOUS EARS

CHAPTER XXXI - CALM AFTER THE STORM

CHAPTER XXXII - MORE ADVENTURE AHEAD

FOREWORD

The development of radio telephony is still in its infancy at this
time of writing in 1922. And yet it has made strides that were
undreamed of in 1918. Experiments made in that year in Germany, and by
the Italian Government in the Adriatic, enabled the human voice to be
projected by radio some hundreds of miles. Today the broadcasting
stations, from which nightly concerts are sent far and wide across the
land, have tremendous range.

Estimates compiled by the various American companies making and
selling radiophone equipment showed that in March of 1922 there were
more than 700,000 receiving sets installed throughout the country and
that installations were increasing so rapidly it was impossible to
compute the percentage with any degree of accuracy, as the gains even
from week to week were great.

When you boys read this the problems of control of the air will have
been simplified to some extent. Yet at the beginning of 1922 they were
simply chaotic. Then the United States Government of necessity took a
hand. The result will be, eventually, that certain wave lengths will
be set aside for the exclusive use of amateurs, others for commercial
purposes, still others for governmental use, and so on.

In this connection, you will note that in the story Jack Hampton's
father builds sending stations on Long Island and in New Mexico. This
is unusual and requires explanation.

The tremendous growth of amateur receiving stations is due in part to
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