Table Of Contents - Yaesu FT-991 Operating Manual

Table of Contents ......................................................... 1
Accessories & Options ................................................. 3
Supplied Accessories ................................................ 3
Available Options ..................................................... 4
Adjusting the Clock .................................................. 5
Resetting the Microprocessor ................................... 5
Installation and Interconnections ............................... 6
Antenna Considerations ........................................... 6
About Coaxial Cable ................................................ 6
Grounding ................................................................. 7
Connection of Antenna and Power Cables ............... 8
Connection of Microphone and Headphone ............. 9
Key, Keyer, and Computer-Driven Keying
Interconnections ..................................................... 10
VL-1000 Linear Amplifier Interconnections .......... 11
Interfacing to Other Linear Amplifiers ................... 12
Front Panel Controls & Switches ............................. 13
Display Indications..................................................... 18
Rear Panel ................................................................... 21
MH-31A8J Microphone Switches ............................. 23
Optional FH-2 Switches ............................................. 24
Basic Operation: Receiving on Amateur Bands ...... 25
Operation on 60-Meter (5 MHz) Band (U.S. version
only) ....................................................................... 28
CLAR ( Clarifier ) Operation ................................... 29
LOCK ..................................................................... 30
DIMMER ............................................................... 30
VFO COLOR ......................................................... 30
Band Stack Operation ............................................. 31
C.S ( Custom Switch ) .............................................. 31
Convenience Features ................................................ 31
SCOPE ................................................................... 32
More Frequency Navigation Techniques ............... 33
Receiver Operation ( Front End Block Diagram ) ... 34
ATT ( A ) .................................................. 35
ttenuAtor
Interference Rejection ............................................... 35
IPO ( Intercept Point Optimization ) ........................ 36
IF Noise Blanker ( NB ) Operation .......................... 37
CONTOUR Control Operation .............................. 38
IF SHIFT Operation ( SSB/CW/RTTY/PKT
Modes ) .................................................................... 39
F T-991 O
peraTing
M
anual
T
able of
WIDTH ( IF DSP Bandwidth ) Tuning ( SSB/CW/
RTTY/DATA Modes ) ............................................. 40
NARROW ( NAR ) One-Touch IF Filter
Selection ................................................................. 41
IF NOTCH Filter Operation ( SSB/CW/RTTY/
DATA/AM Modes ) ................................................. 42
Digital NOTCH Filter ( DNF ) Operation ................ 43
Digital Noise Reduction ( DNR ) Operation ............ 43
Tools for Comfortable and Effective Reception ...... 44
RF Gain .................................................................. 44
Audio Peak Filter ................................................... 45
AGC ( Automatic Gain Control ) ............................. 46
Adjustable Receiver Audio Filter ........................... 47
SSB/AM Mode Transmission .................................... 48
ATU Operation ....................................................... 50
Using the Automatic Antenna Tuner ........................ 50
About ATU Operation ............................................ 51
P m
ArAmetric icrophone
) ...................................................................... 52
mode
Enhancing Transmit Signal Quality ......................... 52
Using the Speech Processor ( SSB Mode ) .............. 54
Adjusting the SSB Transmitted Bandwidth (SSB
Mode) ..................................................................... 55
Voice Memory ( SSB/AM/FM modes:
optional DVS-6 and FH-2
Transmitter Convenience Features .......................... 56
VOX (SSB/AM/FM Modes: Automatic TX/RX
Switching using Voice Control) ............................. 58
MONITOR ( SSB/AM/FM modes ) ......................... 59
Split-Frequency Operation ..................................... 60
Setup for Straight Key ( and Straight Key emulation )
Operation ................................................................ 61
CW Mode Operation ................................................. 61
Using the Built-in Electronic Keyer ....................... 62
CW Spotting ( Zero-Beating ) .................................. 65
CW Convenience Features ........................................ 65
CW Delay Time Setting ......................................... 66
Contest Memory Keyer (Using the Optional FH-2
Remote Control Keypad) ....................................... 67
Basic Operation ...................................................... 72
C
onTenTs
( SSB/Am/Fm
e
quAlizer
Requires
) ................................ 56
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