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
This display indicates that the unit is in receive on ITU channel 2510.
Rx is indicated because the receive and transmit frequencies are dif-
ferent.
ALE MODE
The operator can initiate ALE calls and start and stop scanning while
in this mode. While in the ALE mode the radio can receive ALE calls,
AMD messages and sounds from other ALE radios. ALE mode has
the following states :
• CH: Idle not scanning
• Scan Idle scanning
• Linked Linked with single ALE address call type
• NETlnk Linked with an ALE network call type
• ALLlnk Linked with an ALL call type
• ANYlnk Linked with an ANY call type
• WLDlnk Linked with a wild card call type
• GRPlnk Linked with a Group call type
• MsgRcv Receiving an AMD message
• Callng Performing an ALE call
• SoundR Receiving a sound from an ALE radio.
• SoundT Transmitting a sound
• Pollng LQA (Link Quality Analysis) poll in progress
ALE IDLE STATES
The radio has two ALE idle states, scanning and not scanning. The
radio is toggled between these two states by pushing the SCAN key.
The radio is listening for and will respond to ALE calls in either state.
The calling address is selectable on this page. The channel is also
selectable when not scanning. The operator initiates a call by press-
ing the microphone key. If the radio is scanning an auto-call is per-
Operation
3-18
KHF 950/990 Pilots Guide
Rev. 0
Dec/96
MAN ChITU 2510 R
Rx 26.1720 A3A
Figure 3-15 Manual ITU Channel