The Radio Amateurs Hand Book | Page 4

Currents--What Ratio of Transformation Means--The Secondary Spark
Coil Circuit--The Closed Oscillation Circuit--How Transmitting Set No.
2 Works-With Alternating Current--With Direct Current--The Rotary

Spark Gap--The Quenched Spark Gap--The Oscillation
Transformer--How Receiving Set No. 1 Works--How Receiving Set No.
2 Works.
VII. MECHANICAL AND ELECTRICAL TUNING
Damped and Sustained Mechanical Vibrations--Damped and Sustained
Oscillations--About Mechanical Tuning--About Electric Tuning.
VIII. A SIMPLE VACUUM TUBE DETECTOR RECEIVING SET
Assembled Vacuum Tube Receiving Set--A Simple Vacuum Tube
Receiving Set--The Vacuum Tube Detector--Three Electrode Vacuum
Tube Detector--The Dry Cell and Storage Batteries--The Filament
Rheostat--Assembling the Parts--Connecting Up the Parts--Adjusting
the Vacuum Tube Detector Receiving Set.
IX. VACUUM TUBE AMPLIFIER RECEIVING SETS
A Grid Leak Amplifier Receiving Set. With Crystal Detector--The
Fixed Resistance Unit, or Grid Leak--Assembling the Parts for a
Crystal Detector Set--Connecting up the Parts for a Crystal Detector--A
Grid Leak Amplifying Receiving Set With Vacuum Tube Detector--A
Radio Frequency Transformer Amplifying Receiving Set--An Audio
Frequency Transformer Amplifying Receiving Set--A Six Step
Amplifier Receiving Set with a Loop Aerial--How to Prevent Howling.
X. REGENERATIVE AMPLIFICATION RECEIVING SETS
The Simplest Type of Regenerative Receiving Set--With Loose
Coupled Tuning Coil--Connecting Up the Parts--An Efficient
Regenerative Receiving Set. With Three Coil Loose Coupler--The A
Battery Potentiometer--The Parts and How to Connect Them Up--A
Regenerative Audio Frequency Amplifier--The Parts and How to
Connect Them Up.
XI. SHORT WAVE REGENERATIVE RECEIVING SETS

A Short Wave Regenerative Receiver, with One Variometer and Three
Variable Condensers--The Variocoupler--The Variometer--Connecting
Up the Parts--Short Wave Regenerative Receiver with Two
Variometers and Two Variable Condensers--The Parts and How to
Connect Them Up.
XII. INTERMEDIATE AND LONG WAVE REGENERATIVE
RECEIVING SETS
Intermediate Wave Receiving Sets--Intermediate Wave Set With
Loading Coils--The Parts and How to Connect Them Up--An
Intermediate Wave Set with Variocoupler Inductance Coils--The Parts
and How to Connect Them Up--A Long Wave Receiving Set--The
Parts and How to Connect Them Up.
XIII. HETERODYNE OR BEAT LONG WAVE TELEGRAPH
RECEIVING SET
What the Heterodyne or Beat Method Is--The Autodyne or
Self-heterodyne Long Wave Receiving Set--The Parts and Connections
of an Autodyne or Self-heterodyne, Receiving Set--The Separate
Heterodyne Long Wave Receiving Set--The Parts and Connections of a
Separate Heterodyne Long Wave Receiving Set.
XIV. HEADPHONES AND LOUD SPEAKERS
Wireless Headphones--How a Bell Telephone Receiver is Made--How
a Wireless Headphone is Made--About Resistance, Turns of Wire and
Sensitivity of Headphones--The Impedance of Headphones--How the
Headphones Work--About Loud Speakers--The Simplest Type of Loud
Speaker--Another Simple Kind of Loud Speaker--A Third Kind of
Simple Loud Speaker--A Super Loud Speaker.
XV. OPERATION OF VACUUM TUBE RECEPTORS
What is Meant by Ionization--How Electrons are Separated from
Atoms--Action of the Two Electrode Vacuum Tube--How the Two
Electrode Tube Acts as a Detector--How the Three Electrode Tube

Acts as a Detector--How the Vacuum Tube Acts as an Amplifier--The
Operation of a Simple Vacuum Tube Receiving Set--Operation of a
Regenerative Vacuum Tube Receiving Set--Operation of Autodyne and
Heterodyne Receiving Sets--The Autodyne, or Self-Heterodyne
Receiving Set--The Separate Heterodyne Receiving Set.
XVI. CONTINUOUS WAVE TELEGRAPH TRANSMITTING SETS
WITH DIRECT CURRENT
Sources of Current for Telegraph Transmitting Sets--An Experimental
Continuous Wave Telegraph Transmitter--The Apparatus You
Need--The Tuning Coil--The Condensers--The Aerial Ammeter--The
Buzzer and Dry Cell--The Telegraph Key--The Vacuum Tube
Oscillator--The Storage Battery--The Battery Rheostat--The Oscillation
Choke Coil--Transmitter Connectors--The Panel Cutout--Connecting
Up the Transmitting Apparatus--A 100-mile C. W. Telegraph
Transmitter--The Apparatus You Need--The Tuning Coil--The Aerial
Condenser--The Aerial Ammeter--The Grid and Blocking
Condensers--The Key Circuit Apparatus--The 5 Watt Oscillator
Vacuum Tube--The Storage Battery and Rheostat--The Filament
Voltmeter--The Oscillation Choke Coil--The Motor-generator Set--The
Panel Cut-out--The Protective Condenser--Connecting Up the
Transmitting Apparatus--A 200-mile C. W. Telegraph Transmitter--A
500-mile C. W. Telegraph Transmitter--The Apparatus and
Connections-- The 50-watt Vacuum Tube Oscillator--The Aerial
Ammeter--The Grid Leak Resistance--The Oscillation Choke Coil--The
Filament Rheostat--The Filament Storage Battery--The Protective
Condenser--The Motor-generator--A 1000-mile C. W. Telegraph
Transmitter.
XVII. CONTINUOUS WAVE TELEGRAPH TRANSMITTING SETS
WITH ALTERNATING CURRENT
A 100-mile C. W. Telegraph Transmitting Set--The Apparatus
Required--The Choke Coils--The Milli-ammeter--The A. C. Power
Transformer--Connecting Up the Apparatus--A 200- to 500-mile C. W.
Telegraph Transmitting Set-A 500- to 1000-mile C. W. Telegraph
Transmitting Set--The Apparatus Required--The Alternating Current

Power Transformer-Connecting Up the Apparatus.
XVIII. WIRELESS TELEPHONE TRANSMITTING SETS WITH
DIRECT AND ALTERNATING CURRENTS
A Short Distance Wireless Telephone Transmitting Set--With 110-volt
Direct Lighting Current--The Apparatus You Need--The Microphone
Transmitter--Connecting Up the Apparatus--A 25- to 50-mile Wireless
Telephone Transmitter--With Direct Current Motor Generator--The
Apparatus You Need--The Telephone Induction Coil--The Microphone
Transformer--The Magnetic Modulator--How the Apparatus is
Connected Up--A 50- to 100-mile Wireless Telephone
Transmitter--With Direct Current Motor Generator--The Oscillation
Choke Coil--The Plate and Grid Circuit Reactance Coils--Connecting
up the Apparatus--A 100- to 200-mile Wireless Telephone
Transmitter--With Direct Current Motor Generator--A 50- to 100-mile
Wireless Telephone Transmitting Set--With 100-volt Alternating
Current--The Apparatus You Need--The Vacuum Tube Rectifier--The
Filter Condensers--The Filter Reactance Coil-- Connecting Up the
Apparatus--A 100- to 200-mile Wireless Telephone Transmitting
Set--With 110-volt Alternating Current--Apparatus Required.
XIX. THE OPERATION OF VACUUM TUBE TRANSMITTERS
The Operation of