English

The book of wireless, being a clear description of wireless telegraph sets and how to make and operate them, together with a simple explanation of how wireless works

CONTENTS PART I A SMALL WIRELESS OUTFIT I. The Sender 1 II. The Receiver 12 III. A Cheap Aerial Wire 23 IV. Learning the Morse Code 34 V. How Wireless Works 42 PART II A LONG DISTANCE WIRELESS SET I. The Transmitter 54 II. The Receptor 81 III. A Good Aerial Wire System 110 IV. Tuning Transmitters and Receptors 134 PART III INDUCTION COIL TRANSFORMER AND ELECTROLYTIC INTERRUPTOR I. How to Make a Half-Inch Induction Coil 153 II. How to Make a One-Half Kilowatt Transformer 171 III. Useful Information 196 Dictionary of Words, Terms and Phrases 201 Index 215 LIST OF ILLUSTRATIONS FIG. PAGE 41. — International Morse Code 35 42. — First aid to remembering the code 38 43. — Length of dash 39 44. — Space between two letters 39 45. — Space between two words 39 46. — Abbreviation in code 40 47. — A current of water flowing in a coil of pipe 43 48. — A current of electricity flowing in a coil of wire 43 49. — A bar of iron magnetized by current of coil 44 50. — Currents are set up in the secondary by magnetic lines 45 51. — How a rubber ball bounces 46 52. — Electric current in an aerial wire 48 53. — Electric waves around aerial 49 54. — Electric waves thrown off by aerial 49 55. — Magnet and

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