Manual
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
SECTION X
EMERGENCY FREQUENCIES
INTERNATIONAL DISTRESS FREQUENCY
The frequency 2182 kHz has been designated as an International
Distress Frequency. It is monitored worldwide and should be used
only in the case of an actual emergency. If repeated calls on 2182
kHz do not bring a response, the flight crew may wish to try the U.S.
Coast Guard on the following channels:
ITUChannel No. Aircraft Receive (kHz) Aircraft Transmit (kHz)
424 4428.7 4134.3
601 6506.4 6200.0
816 8765.4 8241.5
1205 13113.2 12342.4
1625 17307.3 16534.4
Table 10-1 U.S.C.G. CHANNELS/FREQUENCIES
If the Coast Guard can’t be reached on one of these channels/fre-
quencies, try a maritime radiotelephone (public correspondence)
operator channel. The marine operator may be able to connect you to
the Coast Guard or to commercial vessels in your area.
It is also possible to obtain emergency assistance from the Air Traffic
Control agency you are in contact with via HF ground stations. If you
declare an emergency to Air Traffic Control, you can receive special
handling similar to services provided on VHF to an aircraft in distress.
The Code of Federal Regulations Title 47 Part 80 state that;
The Frequencies 4125.0 kHz, 6215 kHz, 8291 kHz, 12290 kHz and
16420 kHz may be used by coast and ship stations on a simplex
basis for distress and safety communications. The frequency 5167.5
kHz is available to any station for emergency communications in the
State of Alaska.
Services
10-1
KHF 950/990 Pilots Guide
Rev. 0
Dec/96