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Spectrum Management

From the Early Years to the 1990s

by Laval Desbiens

(adapted for the Web from an original in French)

Page 01  -  Introduction

Page 02  -  In the Beginning   -   From Telegraph to Radio 1850-1910

Page 03  -  Builders of The Radio Branch

Page 04  -  The Radio Branch  -  The Early Days of the Service

Page 05  -  How inspectors were recruited! - With a Quebec perspective

Page 06  -  Authorization Activities  -  From a Quebec perspective

Page 07  -  Definition of Interference

Page 08  -  Electrical Interference and the Public

Page 09  -  Locating Electrical Interference

Page 10  -  Radio Frequency Interference

Page 11  -  Spectrum Surveillance and Monitoring - Early years

Page 12  -  Spectrum Surveillance and Monitoring - The war years

Page 13  -  Spectrum Surveillance and Monitoring - In Quebec

Page 14  -  Spectrum Surveillance and Monitoring - Other regions

Page 15  -  Spectrum Surveillance and Monitoring - Nowadays (2004)

Page 16  -  Examinations

Page 17  -  A timeline   

Page 18  -  Surveillance and Monitoring Receivers Over the Years

Page 19  -  Vehicles Used for Finding Interference

Page 20  -  Instruments Used For Finding Sources of Interference

Page 21  -  Our Radio Trouble Hunters

Page 22  -  Early Spectrum Scanners

Page 23  -  Measuring Frequencies with the Racal RA17C12

Page 24  -  Locating Emergency Locator Transmitters (ELT's & EPIRB's)

Page 25  -  Some Links Related to the History of Monitoring in Canada

Page 26  -  This is it for now... QTC... more to come....