SGC HF SSB - Default Chapter; Table of Contents

1
The SGC Building, 13737 S.E. 26th St. Bellevue, Washington 98005 USA
P.O. Box 3526, 98009 Tel: (425) 746-6310 Fax: (425) 746-6384
© 1997 SGC Inc.
CHAPTER 1
USERS OF LONG-RANGE RADIO EQUIPMENT
HF SSB HIGH FREQUENCY SINGLE SIDEBAND...................................................................7
WHAT IS SSB?......................................................................................................................................................................8
SSB'S HIGH EFFICIENCY ...................................................................................................................................................9
HF SIGNAL CHARACTERISTICS ....................................................................................................................................10
PROPAGATION ..................................................................................................................................................................12
NATURAL CYCLES THAT AFFECT PROPAGATION ..................................................................................................12
HF INTERFERENCE...........................................................................................................................................................14
SIGNAL PATHS ..................................................................................................................................................................15
OPERATING NECESSITIES ..............................................................................................................................................16
INFORMATION SOURCES................................................................................................................................................17
OPERATING MODES.........................................................................................................................................................19
MORSE CODE.....................................................................................................................................................................19
CW (CONTINUOUS WAVE) .............................................................................................................................................19
VOICE ..................................................................................................................................................................................19
AM (AMPLITUDE MODULATION) .................................................................................................................................19
SSB (SINGLE SIDEBAND) ................................................................................................................................................20
DATA ...................................................................................................................................................................................20
VIDEO..................................................................................................................................................................................21
HF SSB vs. VHF/UHF RADIO COMMUNICATION SYSTEMS.....................................................................................22
VHF/UHF COMMUNICATIONS .......................................................................................................................................22
COVERAGE.........................................................................................................................................................................23
REPEATERS REQUIRED ON VHF/UHF..........................................................................................................................24
NO REPEATERS WITH HF SSB........................................................................................................................................25
SECURITY...........................................................................................................................................................................25
POWER.................................................................................................................................................................................26
INSTALLATION .................................................................................................................................................................26
COST ....................................................................................................................................................................................27
CHAPTER 2
HF TRANSCEIVER SPECIFICATIONS AND FEATURES................................................29
HF TRANSCEIVER SPECIFICATIONS AND FEATURES .............................................................................................30
MODES.................................................................................................................................................................................30
TRANSMITTER/RECEIVER BANDS AND FREQUENCY RANGE..............................................................................30
POWER OUTPUT................................................................................................................................................................30
FREQUENCY STABILITY AND CRYSTAL OVEN........................................................................................................31
CONTENTS