Letters of a Radio-Engineer to His Son

Pl. I.–One of the Lines of Towers at Radio Central (Courtesy of Radio Corporation of America).
LETTERS OF A RADIO-ENGINEER TO HIS SON
JOHN MILLS
Engineering Department, Western Electric Company, Inc., Author of “Radio-Communication,” “The Realities of Modern Science,” and “Within the Atom”
NEW YORK
HARCOURT, BRACE AND COMPANY
COPYRIGHT, 1922, BY HARCOURT, BRACE AND COMPANY, INC.
PRINTED IN THE U. S. A. BY THE QUINN & BODEN COMPANY RAHWAY, N. J.
J. M., Jr.
My Dear Son:
You are interested in radio-telephony and want me to explain it to you. I’ll do so in the shortest and easiest way which I can devise. The explanation will be the simplest which I can give and still make it possible for you to build and operate your own set and to understand the operation of the large commercial sets to which you will listen.
I’ll write you a series of letters which will contain only what is important in the radio of to-day and those ideas which seem necessary if you are to follow the rapid advances which radio is making. Some of the letters you will find to require a second reading and study. In the case of a few you might postpone a second reading until you have finished those which interest you most. I’ll mark the letters to omit in this way.