Icom IC-7000 User Manual Page 44
- Page / 166
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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35
3
BASIC OPERATION
■ Squelch and receive (RF) sensitivity
Adjusts the RF gain and squelch threshold level. The
squelch removes noise output from the speaker
(closed position) when no signal is received.
• The squelch is particularly effective for FM. It is also avail-
able for other modes.
•The 12 to 1 o’clock position is recommended for any set-
ting of the [RF/SQL] control.
•The control can be set as ‘Auto’ (RF gain control in SSB,
CW and RTTY; squelch control in AM, FM and WFM (RF
gain is fixed at maximum) in the miscellaneous (others)
set mode as follows (p. 131).
Adjusting RF gain (Receive sensitivity)
Normally, [RF/SQL] is set to the 11 o’clock position.
Rotate [RF/SQL] to the 11 o’clock position for maxi-
mum sensitivity.
• Rotating counterclockwise from the maximum position re-
duces sensitivity.
• The S-meter indicates receive sensitivity.
Adjusting squelch (Removing non-signal noise)
Rotate [RF/SQL] clockwise when receiving no signal,
until the noise just disappears.
• [RX] indicator light goes out.
• Rotating [RF/SQL] past the threshold point invokes the S-
meter squelch—this allows you to set a minimum signal
level needed to open the squelch.
• When setting as RF gain/squelch control
•When functioning as RF gain control
(Squelch is fixed open; SSB, CW, RTTY only)
•When functioning as squelch control (RF gain is
fixed at maximum)
While rotating the RF gain control, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
(FM/WFM mode)
Lowest threshold Highest threshold
Noise squelch (FM/WFM mode)
Minimum RF gain
Adjustable
range
Maximum RF gain
Recommended level
RF gain
adjustable
range
Maximum
RF gain
S-meter shows
squelch level
Noise squelch (FM/WFM mode)
Squelch is
open.
[RF/SQL]
SETTING OPERATION
RF+SQL
Can be used in all modes.
(default)
Functions as noise squelch or S-meter
squelch in AM, FM and WFM modes;
S-meter squelch only in other modes.
SQL
Operates as a squelch control.
• RF gain is fixed at maximum sensitivity.
Operates as an RF gain control in
SSB, CW and RTTY modes.
AUTO
• Squelch is fixed open.
Operates as a squelch control in AM,
FM and WFM modes.
• RF gain is fixed at maximum sensitivity.
- INSTRUCTION MANUAL 1
- IMPORTANT 2
- EXPLICIT DEFINITIONS 2
- FOREWORD SUPPLIED ACCESSORIES 2
- ILLUSTRATIONS 3
- ■ Front panel 4
- PRECAUTIONS 5
- TABLE OF CONTENTS 6
- PANEL DESCRIPTION 10
- D Menu M-1 functions 14
- D Menu M-2 functions 14
- D Menu M-3 functions 14
- 4 function is ON, “ ” appears 15
- D Menu S-1 functions 16
- D Menu S-2 functions 16
- D Menu S-3 functions 17
- D Menu G-1 (Scope) functions 17
- ■ Microphone (HM-151) 18
- Rear panel view 19
- 12345678 19
- ■ Rear panel 20
- D DATA socket 21
- D ACC socket 21
- ■ Function display 22
- INSTALLATION AND CONNECTIONS 24
- ■ Installation 25
- KEY ACC DATA 26
- ANT2 ANT1 26
- DC 13.8V 26
- ■ Advanced connections 27
- 3.5(d) mm 27
- ■ Power supply connections 28
- ■ Battery connections 28
- ■ External antenna tuners 29
- ■ Linear amplifier connections 30
- ■ Connections for CW 31
- ■ Connections for RTTY (FSK) 32
- ■ Connections for packet 33
- BASIC OPERATION 34
- ■ VFO description 35
- ■ Selecting VFO/memory mode 36
- ■ VFO operation 36
- ■ Selecting an operating band 37
- ■ Frequency setting 38
- Programmable tuning step 39
- Selecting “kHz” step 39
- ■ Volume setting 42
- ■ Operating mode selection 43
- ■ Voice synthesizer function 43
- ■ Meter function 45
- ■ Basic transmit operation 46
- ■ Lock functions 46
- D Setting output power 47
- D Setting microphone gain 47
- RECEIVE AND TRANSMIT 48
- ■ Operating CW 50
- 4 function (p. 32) 51
- 4 function ON and OFF 51
- D CW reverse mode 52
- CW side tone function 52
- D CW pitch control 53
- ■ Electronic CW keyer 54
- • Transmitting 55
- D Memory keyer send menu 55
- Set Tx power level 59
- ■ Operating RTTY (FSK) 60
- D RTTY reverse mode 62
- Twin peak filter 62
- ■ Operating AM 66
- ■ Operating FM 68
- D Tone squelch operation 69
- D Tone scan operation 70
- D DTCS operation 71
- ■ Repeater operation 72
- D Repeater tone frequency 73
- D Auto repeater function 74
- ■ 1750 Hz tone burst 76
- ■ DTMF memory encoder 76
- Programming a DTMF code 77
- Selected 77
- D DTMF speed 77
- ■ TV channel operation 78
- Skip channel setting 79
- Channel frequency adjustment 80
- FUNCTIONS FOR RECEIVE 81
- D Center mode 82
- D Scope set mode 82
- ■ Preamp and attenuator 83
- ■ RIT function 84
- ■ AGC function 85
- ■ IF filter selection 86
- ■ Twin PBT operation 88
- ■ Noise blanker 89
- ■ Noise reduction 90
- ■ Notch function 91
- Manual notch function 92
- D Manual notch filter set mode 92
- ■ Meter peak hold function 93
- FUNCTIONS FOR TRANSMIT 94
- ■ VOX function 94
- 0 . 2 s 95
- 5 0 % 95
- ■ Break-in function 96
- TX function 97
- ■ Speech compressor 98
- ■ Monitor function 98
- COMP Level 99
- D Compression level setting 99
- ■ Split frequency operation 100
- ■ Quick split function 101
- D Quick split setting 102
- ■ Measuring SWR 103
- VOICE RECORDER FUNCTIONS 104
- D One-touch voice recording 105
- Menu selection (Example: S) 106
- Menu group selection 106
- D Recording 107
- •Erasing the recoded contents 107
- ■ Sending a recorded message 109
- ■ Voice set mode 110
- ■ Memory channel selection 111
- MEMORY OPERATION 111
- ■ Memory channels 111
- ■ Memory programming 112
- D Programming in memory mode 113
- ■ Memory channel list 114
- D Selecting a memory bank 115
- D Memory names 116
- ■ Memory clearing 117
- ■ Frequency transferring 118
- D Transferring in memory mode 119
- ■ Memo pads 120
- SCAN OPERATION 122
- ■ Programmed scan operation 123
- ■ Memory scan operation 123
- ■ Priority watch 124
- ANTENNA TUNER OPERATION 125
- ■ Optional AT-180 125
- ■ Optional AH-4 126
- PACKET OPERATION 127
- CLOCK AND TIMERS 128
- D Setting the current year 129
- D Setting the current date 129
- D Setting the current time 129
- D Auto power OFF activity 130
- D Clock2 function activity 130
- D Clock2 offset setting 130
- SET MODE 131
- ■ Quick set mode 132
- Quick set mode (continued) 133
- ■ Display set mode 135
- Display set mode (continued) 136
- ANTENNA TUNER 141
- To [MIC] connector pin e 146
- To [MIC] connector pin u 146
- V LEVEL CONVERTER 147
- MAINTENANCE 148
- TROUBLESHOOTING 149
- TRANSMITDISPLAYSCAN 150
- POSSIBLE CAUSE SOLUTION REF 150
- OPTION UNITS SETTING 151
- ■ MB-106 151
- CARRYING HANDLE 151
- CONTROL COMMAND 153
- • Command table (continued) 154
- SPECIFICATIONS 159
- MENU GUIDE 162
- MENU/GRP)] or [AF] switch 163
- A-6241H-1EX 166
- Printed in Japan 166
- © 2005 Icom Inc 166
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