Fig. 57.--Wiring Diagram Showing Fixed Loading Coils for Intermediate
Wave Set

Fig. 58.--Wiring Digram of Intermediate Wave Receptor with One Vario
Coupler and 12 Section Bank-wound Inductance Coil

Fig. 59.--Wiring Diagram Showing Long Wave Receptor with Vario
Couplers and 8 Bank-wound Inductance Coils

Fig. 60.--Wiring Diagram of Long Wave Autodyne, or Self-heterodyne
Receptor (Compare with Fig. 77)

Fig. 61.--Wiring Diagram of Long Wave Separate Heterodyne Receiving
Set

Fig. 62.--Cross Section of Bell Telephone Receiver

Fig. 63.--Cross Section of Wireless Headphone

Fig. 64.--The Wireless Headphone

Fig. 65.--Arkay Loud Speaker

Fig. 66.--Amplitone Loud Speaker

Fig. 67.--Amplitron Loud Speaker

Fig. 68.--Magnavox Loud Speaker

Fig. 69.--Schematic Diagram of an Atom