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