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T-991
OperaTing Manual
Table OF cOnTenTs
General Description ..................................................... 1
Table of Contents ......................................................... 3
Accessories & Options ................................................. 5
Supplied Accessories ................................................ 5
Available Options ..................................................... 6
Before You Begin .......................................................... 7
Base Station Wire Stand ........................................... 7
Adjusting the Main Tuning Dial Torque .................. 7
Adjusting the Clock .................................................. 8
Inputting the Call Sign ............................................. 9
Resetting the Microprocessor ................................. 10
Antenna Considerations ......................................... 11
About Coaxial Cable .............................................. 11
Grounding ............................................................... 12
Connection of Antenna and Power Cables ............. 13
Installation and Interconnections ............................. 14
Connection of Microphone, Headphone and
Remote Control Keypad ......................................... 14
Key, Keyer, and Computer-Driven Keying
Interconnections ..................................................... 15
VL-1000 Linear Amplier Interconnections .......... 16
Plug/Connector Pinout Diagrams ........................... 17
Front Panel Controls & Switches ............................. 18
About the Display ....................................................... 22
TFT Liquid Crystal Display ................................... 22
LED Indicators ....................................................... 24
Rear Panel ................................................................... 25
MH-31A8J Microphone Switches ............................. 27
Optional FH-2 Remote Control Switches ................ 28
Optional MH-36E8J Microphone Switches ............. 29
Basic Operation: Receiving on Amateur Bands ...... 30
Operation on 60-Meter
(
5 MHz
)
Band
(
U.S. and U.K. version only
)
.................................. 33
CLAR
(
Clarier
)
Operation ................................... 34
LOCK ..................................................................... 35
DIMMER ............................................................... 35
VFO COLOR ......................................................... 36
Convenience Features ................................................ 37
Band Stack Operation ............................................. 37
C.S
(
Custom Switch
)
.............................................. 37
AMS
(
Automatic Mode Select
)
Operation ............. 38
SCOPE ................................................................... 40
More Frequency Navigation Techniques ............... 42
Receiver Operation
(
Front End Block Diagram
)
... 44
Interference Rejection ............................................... 45
ATT
(
Attenuator
)
.................................................... 45
IPO
(
Intercept Point Optimization
)
........................ 46
IF Noise Blanker
(
NB
)
Operation .......................... 47
CONTOUR Control Operation .............................. 48
IF SHIFT Operation
(
SSB/CW/RTTY/DATA Modes
)
............................ 49
WIDTH
(
IF DSP Bandwidth
)
Tuning
(
SSB/CW/RTTY/DATA Modes
)
............................ 50
NARROW
(
NAR
)
One-Touch IF Filter
Selection ................................................................. 52
IF NOTCH Filter Operation
(
SSB/CW/RTTY/DATA/AM Modes
)
.................... 53
Digital NOTCH Filter
(
DNF
)
Operation ................ 54
Digital Noise Reduction
(
DNR
)
Operation ............ 54
Tools for Comfortable and Effective Reception ...... 55
RF Gain .................................................................. 55
Audio Peak Filter ................................................... 56
AGC
(
Automatic Gain Control
)
............................. 57
Adjustable Receiver Audio Filter ........................... 58
SSB/AM Mode Transmission .................................... 59
Using the Automatic Antenna Tuner ........................ 61
ATU Operation ....................................................... 61
About ATU Operation ............................................ 62
Enhancing Transmit Signal Quality ......................... 63
Parametric Microphone Equalizer
(
SSB/AM mode
)
..................................................... 63
Using the Speech Processor
(
SSB Mode
)
.............. 66
Adjusting the SSB Transmitted Bandwidth
(
SSB Mode
)
............................................................ 67
Transmitter Convenience Features .......................... 68
Voice Memory
(
SSB/AM modes
)
.......................... 68
VOX
(
SSB/AM/FM Modes: Automatic TX/RX
Switching using Voice Control
)
............................. 70
MONITOR
(
SSB/AM modes
)
................................ 72
Split Operation Using the TX Clarier .................. 73
Split-Frequency Operation ..................................... 74
CW Mode Operation ................................................. 76
Setup for Straight Key
(
and Straight Key emulation
)
Operation ................ 76
Using the Built-in Electronic Keyer ....................... 78
CW Convenience Features ........................................ 82
CW Spotting
(
Zero-Beating
)
.................................. 82
CW Delay Time Setting ......................................... 83
CW Pitch Adjustment ............................................. 83
Contest Memory Keyer .......................................... 84
FM Mode Operation .................................................. 91
Basic Operation ...................................................... 91
Repeater Operation ................................................. 92
Tone Squelch Operation ......................................... 94
DCS Operation ....................................................... 94
C4FM Mode
(
Digital Mode
)
Operation ................... 95
Memory Operation .................................................... 97
Convenient Memory functions ............................... 97
QMB
(
Quick Memory Bank
)
................................. 97
Standard Memory Operation .................................. 98
Memory Groups ................................................... 104
5


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