Making wireless outfits
Subtitle: A Concise And Simple Explanation Of The Construction And Use Of An Inexpensive Wireless Equipment For Sending And Receiving Up To 100 Miles, Giving Full Details And Illustrations
Publisher: Spon & Chamberlain
Published: 1909
Place of publication: New York, USA
Language: eng
Table of contents: title: CONTENTS.; title: CHAPTER I.; title: How the waves are made. How the waves are received. Antennae, or aerials to catch the waves. How the coherer is made. Making the decoherer. What the relay is for. The receiving circuits connected up. The relay adjustment. Making the relay and sounder. Drilling holes in brass; title: CHAPTER II.; title: Marconi's coherer. The coherer mixture of metals. The spark coil or transmitter. A one and one half inch spark. The iron wire core. A standard six inch spark coil. To get a six inch spark. Parts and action of a spark coil. Functions of the parts of a spark coil. Primary coil. Vibrator. Secondary coil. Condenser. The spark gap. The metal pole receivers, or antennae. Effect of daylight on electric waves. Connection of antennae to stations; title: CHAPTER III.; title: Metal towers. Ground connections and antennae connections. Use of gas pipes for ground. Antennae for ships. Tuning circuits. Length of spark discharge and spark voltage; title: CHAPTER IV.; title: Power required for long distance wireless telegraphy. Dimensions of coils for different spark lengths. The telegraphic codes. Morse code. Continental code. Earth connections in the country  54; title: TABLES.; title: I. — Heights for antennae, with distances between stations 36; title: II. — Brass knobs 8/10 inches in diameter 52; title: III. — Dimensions for different spark lengths 57; title: LIST OF ILLUSTRATIONS.; title: 1 Piece of glass tubing 11; title: 2 Brass support for tube 12; title: 3 Metal plug for glass tube 13; title: 4 Mounting of coherer 14; title: 5 Large wooden base for coherer and decoherer 16; title: 6 Receiving circuit IS; title: 7 The independent decoherer circuit 20; title: 8 Parts of relay and sounder 21; title: 9 Relay mounted 22; title: 10 Mounting of armature of relay  23; title: 11 Marconi's coherer 26; title: 12 Condenser connected to interrupter 27; title: 13 Paraffined paper and tinfoil in position 28; title: 14 Appearance of a condenser set up 30; title: 15 Secondary built up of four small coils 31; title: 16 Elements, or parts, of the spark coil 32; title: 17 Mounted coil as indicated in the parts of Fig. 16   33; title: 18 Electric waves moving in enlarging spheres in all directions 37; title: 19 Use of a primary and secondary at the receiving end 38; title: 20 Grounding to a gas pipe 43; title: 21 Antennae on board ship 44; title: 22 Combination of condenser and coil to produce various sizes of electric waves 47; title: 23 Dr. Hertz's transmitter 48; title: 24 Method of tuning two stations 49; title: 25 Wireless waves crossing each other 51; title: 26 An equipment for a 100 mile transmission plant   55; title: 27 Method of getting a ground with a metal plate   59