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
Description
2-4
KHF 950/990 Pilots Guide
Rev. 0
Dec/96
1
S
T
HF
OFF
TELAM
USB
LSB
A3J
A3A
VOL
SQ
2236
CH
M
H
Z
K
H
Z
KFS 594 in
A3J (or A3A)
MODE
Mairitime
radiotelephone ITU
channel number
appears in this area
of the display when
EMISSION MODE
switch is in A3J or
A3A position.
1
S
T
HF
OFF
TELAM
USB
LSB
A3J
A3A
VOL
SQ
1231
12 - 31
CH
M
H
Z
T
X
K
H
Z
Pilot programmed
channel number
appears in this area
of the display when
using one of the 19
programmable
channels.
Gas discharge
readouts display all
frequencies and
preset channel
numbers.
Last for digits (kHz)
of operating
frequency are
display in this area
of the display with
EMISSION MODE
switch in LSB*, USB
or AM position.
OFF/VOLUME knob
(inner concentric)
turns system on and
adjusts audio
volume.
SQUELCH knob
(outer concentric)
helps reduce
background noise
when not receiving
a signal.
EMMISSION MODE
switch (outer
concentric) selects
lower sideband
(LSB), AM modes,
and a choice of
either A3J or A3A in
maritime
radiotelephone
network channels.
FREQUENCY/CHANNEL
CONTROL knob (inner
concentric) allows the pilot
to perform a variety of
channel and frequency
changing functions.
Depressing switch causes
flashing "cursor" to move to
the digit that the pilot desires
to change. Appropriate
frequency or channel is then
selected with rotary action.
This switch also serves as
the clarifier function to
adjust receive frequency and
improve speech quality in
single sideband operating
mode.
STO (store) switch
stored displayed
frequency in memory.
When pressed
simultaneously with
microphone push-to-talk
switch, transmits 1,000
Hz "operator attention"
tone as required by
some Canadian
radiotelephone stations.
Photocell dims
display
automatically.
Smaller gas
discharge
characters display
transmit indication.
With EMMISSION
MODE switch in
LSB*, USB or AM
position, the first
one or two digits
(MHz) of the
operating frequency
are displayed here.
Dash indicates unit
is in the PROGRAM
MODE.
Figure 2-2 KFS 594 Control Display Unit
KFS 594 in A3J (or A3A) Mode
Figure 2-3 KFS 594 in A3J (or A3A) Mode