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
The KCU 951 has 99 pilot programmable channels all of which can
be set for semi-duplex operation. The public correspondence stations
utilize semi-duplex operation. These programmable channels can be
set on the ground or in the air by the pilot. For example, coast station
KMI in Point Reyes, California operates on 17 semi-duplex channels
including ITU channel 401 (aircraft receive on 4357.0 kHz and aircraft
transmit on 4065.0 kHz). By preprogramming the transmit and
receive frequencies associated with channel 401 into any of the 99
preset channels in the KCU 951, you may later recall this semi-
duplex pair of frequencies by selecting the appropriate preset chan-
nel number.
AT&T operates three of the four public correspondence stations in
the United States utilized for High Seas radiotelephone operation.
These are coast stations KMI in Point Reyes, California; station WOO
in Manahawkin, New Jersey; and station WOM in Ft. Lauderdale,
Florida. The fourth station is station WLO in Mobile, Alabama, which
is operated by Mobile Marine Radio, Inc.
The Maritime Radiotelephone Network section of this pilot’s guide is
in three parts. Part one is devoted to the Bell System’s High Seas
Service; part two describes the service of station WLO; and part three
provides a worldwide listing of public correspondence stations.
AT&T HIGH SEAS RADIOTELEPHONE SERVICE
The AT&T High Seas Network serves commercial shipping and plea-
sure boat operators as well as aircraft in flight. The service is widely
used for personal and operational calling by all of these users. It also
broadcasts weather and gives top priority to safety communication.
Services
7-2
KHF 950/990 Pilots Guide
Rev. 0
Dec/96