Transmitting Set--With 110-volt Alternating Current--Apparatus
Required.

XIX. THE OPERATION OF VACUUM TUBE TRANSMITTERS

The Operation of the Vacuum Tube Oscillator--The Operation of C. W.
Telegraph Transmitters with Direct Current--Short Distance C. W.
Transmitter--The Operation of the Key Circuit--The Operation of C. W.
Telegraph Transmitting with Direct Current--The Operation of C. W.
Telegraph Transmitters with Alternating Current--With a Single
Oscillator Tube--Heating the Filament with Alternating Current--The
Operation of C. W. Telegraph Transmitters with Alternating Current--
With Two Oscillator Tubes--The Operation of Wireless Telephone
Transmitters with Direct Current--Short Distance Transmitter--The
Microphone Transmitter--The Operation of Wireless Telephone
Transmitters with Direct Current--Long Distance Transmitters--The
Operation of Microphone Modulators--The Induction Coil--The Microphone
Transformer--The Magnetic Modulator--Operation of the Vacuum Tube as a
Modulator--The Operation of Wireless Telephone Transmitters with
Alternating Current--The Operation of Rectifier Vacuum Tubes--The
Operation of Reactors and Condensers.

XX. HOW TO MAKE A RECEIVING SET FOR $5.00 OR LESS.

The Crystal Detector--The Tuning Coil--The Headphone--How to Mount the
Parts--The Condenser--How to Connect Up the Receptor.

APPENDIX

Useful Information--Glossary--Wireless Don'ts.