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
Using the KCU 951 or KFS 594, if the system detects a fault during
transmission or during the tuning of the antenna coupler, the frequen-
cy digits on the display begin to flash. Simply key the mic and the
automatic antenna coupler begins a new tuning cycle to clear the
fault.
TUNING FAULTS
If the antenna coupler is unable to find an acceptable
frequency/antenna match, the fault indication continues at the end of
the tuning cycle. If repeated antenna tuning cycles fail to clear the
fault indication from the display, there is probably an equipment mal-
function.
KHF 950/990 CONTROLS-GENERAL
Operating the KHF 950/990 requires that the pilot first determine the
correct mode to match the ground station, whether it be upper side-
band (USB), lower sideband (LSB), or AM. Correct mode selection is
essential for successful contact with a ground station. Most stations
use USB mode, but some continue to use AM. Also, the pilot must
determine whether simplex, semi-duplex or receive-only frequency
operation is required to match the operation of the desired ground
station.
THERE ARE SEPARATE OPERATING SECTIONS ON EACH OF
THE CONTROL DISPLAY UNITS. READ ONLY THE SECTION
WHICH PERTAINS TO THE CONTROL DISPLAY UNIT YOU HAVE
INSTALLED WITH YOUR KHF 950/990.
Operation
3-3
KHF 950/990 Pilots Guide
Rev. 0
Dec/96