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
cycle time of any radio that will be called. The scan cycle time is the
length of time a radio takes to go completely through its scan list.
The scan cycle time is calculated by dividing the number of channels
on the scan list by the scan rate.
Example:15 channels at 5 Hz scan rate, results in a 3 second scan
time ( 15 / 5 = 3).
ENABLES
The Enables Page is a Program Operation Sub-Page. This page
works in a similar manner to the interval page. The enables are dis-
played on the second line (Figure 3-42). Each time the ENT key is
pushed the next enable is displayed. The arrows on the second line
indicate that a list of items is available. The down arrow means this is
the top of the list, and the up arrow is used for the bottom of the list.
The double arrow indicates there are parameters above and below
this one. The following items can be enabled, set to “ON”, or dis-
abled, set to “OFF” on this page.
EEEEEEEEEE * Enable type
• Auto Sound Automatic sounding
• LQA in call Exchange LQA information in the
ALE call preamble
• Message Rx Allow reception of AMD messages
• AnyCall Rx Allow reception of ALE Anycalls
• AllCall Rx Allow reception of ALE Allcalls
• Wildcard Allow reception of ALE Wildcard
calls
• Roll Over Digit rollover for numeric entry
SSS * State ON or OFF
* Cursorable fields
Operation
3-34
KHF 950/990 Pilots Guide
Rev. 0
Dec/96
Enables
}EEEEEEEEEEE SSS
Figure 3-42 Enables