(B) Fig. 89.--Microphone Modulator Connected in Aerial Wire

Fig. 90.--Wiring Diagram of 50- to 100-mile Wireless Telephone
Transmitting Set

Fig. 91.--Plate and Grid Circuit Reactor

Fig. 92.--Filter Reactor for Smoothing Out Rectified Currents

Fig. 93.--100- to 200-mile Wireless Telephone Transmitter

(A) and (B) Fig. 94.--Operation of Vacuum Tube Oscillators

(C) Fig. 94.--How a Direct Current Sets up Oscillations

Fig. 95.--Positive Voltage Only Sets up Oscillations

Fig. 96.--Rasco Baby Crystal Detector

Fig. 97.--How the Tuning Coil is Made

Fig. 98.--Mesco loop-ohm Head Set

Fig. 99.--Schematic Layout of the $5.00 Receiving Set

Fig. 100.--Wiring Diagram for the $5.00 Receiving Set