Technical information
Table Of Contents
- TITLE PAGE
- TABLE OF CONTENTS
- INTRODUCTION
- SECTION I
- CHARACTERISTICS OF HF SSB
- ACRONYMS AND DEFINITIONS
- REFERENCES
- HF SSB COMMUNICATIONS
- FREQUENCY
- SKYWAVE PROPAGATION - WHICH FREQUENCY TO
- WHY SINGLE SIDEBAND IS IMPORTANT IN HF
- AMPLITUDE MODULATION (AM)
- SINGLE SIDEBAND OPERATION
- SINGLE SIDEBAND (SSB)
- SUPPRESSED CARRIER VS. REDUCED CARRIER
- SIMPLEX AND SEMI-DUPLEX OPERATION
- AUTOMATIC LINK ESTABLISHMENT (ALE)
- FUNCTIONS OF HF RADIO AUTOMATION
- HOW ALE ASSURES THAT THE BEST COMMUNICA-TIONS
- CHARACTERISTICS OF HF SSB
- SECTION II
- SECTION III
- SECTION IV
- SECTION V
- SECTION VI
- SECTION VII
- ITU MARITIME RADIOTELEPHONE STATIONS
- DESCRIPTION OF SERVICES
- AT&T HIGH SEAS RADIOTELEPHONE SERVICE
- AT & T COAST STATION COVERAGE MAP
- COAST STATION COVERAGE & INFORMATION
- AIRCRAFT REGISTRATION
- OPERATING PROCEDURES FOR USING THE HIGH SEAS RADIOTELEPHONE NETWORK
- AT&T HIGH SEAS COAST STATIONS
- MOBILE MARINE RADIO, INC.
- WORLDWIDE LISTING OF PUBLIC CORRESPONDENCE STATIONS
- MARITIME RADIOTELEPHONE CHANNEL DESIGNATIONS
- SECTION VIII
- SECTION IX
- SECTION X
- SECTION XI
- SECTION XII
- SECTION XIII
KFS 594 OPERATIONAL NOTES:
1. It is necessary to retune the antenna coupler whenever the MODE
selector knob is changed from one mode to another. Pressing the
mic button momentarily initiates antenna tuning.
2. Lower Sideband (LSB) operation is normally internally disabled. If
the MODE selector knob is moved to the LSB position, a flashing “E”
will appear on the upper part of the display. The KHF 950/990 system
will operate in the Upper Sideband mode if the MODE selector knob
is left in the LSB position. Moving the MODE selector knob to the
Upper Sideband (USB) or AM Mode will clear the flashing “E”.
3. The A3A Telephone mode (reduced carrier) has been internally
disabled and a flashing “E” will appear on the upper part of the dis-
play if the MODE selector is moved to this position. Since the pre-
ferred mode of operation when utilizing the ITU Maritime
Radiotelephone Channels is A3J, make sure the MODE selector
knob is in the A3J position when using this service
4. Anytime other than Paragraphs 2 or 3 above that a flashing “E”
appears on the display, it is an indication that an inconsistency has
been detected in the system and that operator confirmation of the
selected mode is required. This confirmation may be easily accom-
plished by verifying that the desired mode has been selected and
then momentarily pressing the STO button.
Operation
3-73
KHF 950/990 Pilots Guide
Rev. 0
Dec/96