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Icom IC-7600 Instruction Manual - Page 40

■ Squelch and receive (RF) sensitivity, SET MODE, OPERATION, Adjusting RF gain, RF/SQL]

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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 AM and FM. It is also available for other modes. • 12 to 1 o'clock position is recommended for any setting of the [RF/SQL] control. • The control can be set as 'Auto' (RF gain control in SSB, CW, RTTY and PSK; squelch control in AM and FM) or squelch control (RF gain is fixed at maximum) in others set mode as follows. (p. 128) [RF/SQL] SET MODE OPERATION RF+SQL (default) Can be used in all modes. Functions as noise squelch or S-meter squelch in FM modes; S-meter squelch only in other modes. SQL Operates as a squelch control. • RF gain is fixed at maximum sensitivity. AUTO Operates as an RF gain control in SSB, CW, RTTY and PSK modes. • Squelch is fixed open. Operates as a squelch control in AM and FM modes. • RF gain is fixed at maximum sensitivity. • When setting as RF gain/squelch control Squelch is open. Noise squelch (FM mode) Recommended level Maximum RF gain RF gain adjustable range S-meter squelch • When functioning as RF gain control (Squelch is fixed open; SSB, CW, RTTY, PSK only) ❍ 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 maximum sensitivity. • Rotating counterclockwise from the maximum position reduces 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. Adjustable range Minimum RF gain Maximum RF gain • When functioning as squelch control (RF gain is fixed at maximum.) Noise squelch (FM mode) Noise squelch threshold (FM mode) S-meter squelch threshold Squelch is open. S-meter squelch Shallow Deep While rotating the RF gain control, noise may be heard. This comes from the DSP unit and does not indicate an equipment malfunction. 33

Section	Page
Front cover	1
FOREWORD	2
IMPORTANT	2
EXPLICIT DEFINITIONS	2
SUPPLIED ACCESSORIES	2
FCC INFORMATION	2
PRECAUTIONS	3
TABLE OF CONTENTS	4
1 PANEL DESCRIPTION	8
■ Front panel	8
■ Rear panel	18
■ LCD display	20
■ Screen menu arrangement	22
2 INSTALLATION AND CONNECTIONS	23
■ Unpacking	23
■ Selecting a location	23
■ Grounding	23
■ Antenna connection	23
■ Required connections	24
◇ Front panel	24
◇ Rear panel	24
■ Advanced connections	25
◇ Front panel	25
◇ Rear panel— 1	25
◇ Rear panel— 2	26
■ USB connection	26
■ Power supply connections	27
■ External antenna tuner connection	27
■ Linear amplifier connections	28
◇ Connecting the IC-PW1/EURO	28
◇ Connecting a non-Icom linear amplifier	28
■ Transverter jack information	29
■ FSK and AFSK (SSTV) connections	29
◇ FSK operation— when connecting to [ACC 1]	29
◇ AFSK operation	29
◇ When connecting to the [USB] connector	29
■ Microphone connector information	30
■ Microphones	30
◇ HM-36	30
◇ SM-50 (Option)	30
■ Accessory connector information	31
3 BASIC OPERATION	32
■ Before first applying power	32
■ Applying power (CPU resetting)	32
■ Selecting VFO/memory mode	33
■ Main/Sub band selection	33
◇ Main/Sub band switching	33
◇ Main/Sub band equalization	33
■ Selecting an operating band	34
◇ Using the band stacking registers	34
■ Frequency setting	35
◇ Tuning with the main dial	35
◇ Direct frequency entry with the keypad	35
◇ About 5 MHz band operation (USA version only)	36
◇ Quick tuning step	36
◇ Selecting “kHz” step	36
◇ Selecting 1 Hz step	37
◇ Auto tuning step function	37
◇ 1⁄4 tuning step function	37
◇ Band edge warning beep	38
■ Operating mode selection	39
■ Squelch and receive (RF) sensitivity	40
■ Volume setting	41
■ Meter indication selection	41
◇ Multi-function digital meter	41
◇ Meter type selection	42
■ Voice synthesizer operation	42
■ Basic transmit operation	43
◇ Transmitting	43
◇ Microphone gain adjustment	43
◇ Drive gain adjustment	44
◇ Drive gain adjustment	44
4 RECEIVE AND TRANSMIT	45
■ Functions for CW operation	45
◇ About CW reverse mode	45
◇ About CW pitch control	45
◇ CW sidetone function	45
◇ APF (Audio Peak Filter) operation	46
■ Electronic keyer functions	47
◇ Memory keyer screen	48
◇ Editing a memory keyer	49
◇ Contest number set mode	50
◇ Keyer set mode	51
■ RTTY (FSK) operation	53
◇ About RTTY reverse mode	54
◇ Twin peak filter	54
◇ Functions for the RTTY decoder indication	55
◇ Setting the decoder threshold level	55
◇ RTTY memory transmission	56
◇ Automatic transmission/reception setting	56
◇ Editing RTTY memory	57
◇ RTTY decode set mode	58
◇ Data saving	60
■ PSK operation	61
◇ About BPSK and QPSK modes	62
◇ Functions for the PSK decoder indication	63
◇ Setting the decoder threshold level	63
◇ PSK memory transmission	64
◇ Automatic transmission/reception setting	64
◇ Editing PSK memory	65
◇ PSK decode set mode	66
◇ Data saving	68
■ Repeater operation	69
◇ Repeater access tone frequency setting	69
■ Tone squelch operation	70
■ Data mode (AFSK) operation	71
■ Spectrum scope screen	72
◇ Center mode	72
◇ Fixed mode	73
◇ Mini scope screen indication	74
◇ Scope set mode	74
■ Preamplifier	79
■ Attenuator	79
■ RIT function	80
◇ RIT monitor function	80
■ AGC function	81
◇ Selecting the preset value	81
◇ Setting the AGC time constant preset value	81
■ Twin PBT operation	82
■ IF filter selection	83
◇ IF filter selection	83
◇ Filter passband width setting (except FM mode)	83
◇ Roofing filter selection	84
◇ DSP filter shape	84
◇ Filter shape set mode	85
■ Dualwatch operation	86
■ Noise blanker	88
◇ NB set mode	88
■ Noise reduction	89
■ Dial lock function	89
■ Notch function	90
■ Autotune function	90
■ VOX function	91
◇ Using the VOX function	91
◇ Adjusting the VOX function	91
■ Break-in function	92
◇ Semi break-in operation	92
◇ Full break-in operation	92
■ Speech compressor	93
■ Transmit filter width setting	93
■ ⊿TX function	94
◇ ⊿TX monitor function	94
■ Monitor function	94
■ Split frequency operation	95
■ Quick split function	96
◇ Split lock function	96
5 VOICE RECORDER FUNCTIONS	97
■ About digital voice recorder	97
■ Recording a received audio	98
◇ Basic recording	98
◇ One-touch recording	98
■ Playing the recorded audio	99
◇ Basic playing	99
◇ One-touch playing	99
■ Protect the recorded contents	100
■ Erasing the recorded contents	100
■ Recording a message for transmit	101
◇ Recording	101
◇ Confirming a message for transmit	101
■ Programming a memory name	102
■ Sending a recorded message	103
◇ Transmit level setting	103
■ Voice set mode	104
■ Saving a voice message into the USB-Memory	105
◇ Saving the received audio memory	105
◇ Saving the TX memory	105
6 MEMORY OPERATION	106
■ Memory channels	106
■ Memory channel selection	106
◇ Using the [▲]/[▼] keys	106
◇ Using the keypad	106
■ Memory list screen	107
◇ Selecting a memory channel using the memory list screen	107
◇ Confirming programmed memory channels	107
■ Memory channel programming	108
◇ Programming in VFO mode	108
◇ Programming in memory mode	108
■ Frequency transfers	109
◇ Transferring in VFO mode	109
◇ Transferring in memory mode	109
■ Memory names	110
◇ Editing (programming) memory names	110
■ Memory clearing	110
■ Memo pads	111
◇ Writing frequencies and operating modes into memo pads	111
◇ Calling up a frequency from a memo pad	111
7 SCANS	112
■ Scan types	112
■ Preparation	112
■ Scan set mode	113
■ Programmed scan operation	114
■ ⊿F scan operation	114
■ Fine programmed scan/Fine ⊿F scan	115
■ Memory scan operation	116
■ Select memory scan operation	116
■ Setting select memory channels	117
◇ Setting in scan screen	117
◇ Setting in memory list screen	117
◇ Erasing the select scan setting	117
■ Tone scan	118
8 ANTENNA TUNER OPERATION	119
■ Automatic antenna selection	119
■ Antenna tuner operation	120
◇ Tuner operation	120
◇ Manual tuning	120
■ Optional external tuner operation	121
9 CLOCK AND TIMERS	122
■ Clock set mode	122
■ Daily timer setting	123
■ Setting sleep timer	124
■ Timer operation	124
10 SET MODE	125
■ Set mode description	125
◇ Set mode operation	125
◇ Screen arrangement	126
■ Level set mode	127
■ ACC set mode	131
■ Display set mode	133
■ Others set mode	135
■ USB-Memory set menu	143
◇ USB-Memory set screen arrangement	143
■ File loading	144
◇ Load option set mode	145
■ File saving	146
◇ Save option set mode	147
■ Changing a file name	148
■ Deleting a file	149
■ Unmounting USB-Memory	149
■ Formatting the USB-Memory	150
11 MAINTENANCE	151
■ Troubleshooting	151
◇ Transceiver power	151
◇ Transmit and receive	151
◇ Scanning	152
◇ Display	152
◇ Format USB-Memory	152
■ Main dial brake adjustment	152
■ SWR reading	153
■ Screen type and font selections	153
■ Frequency calibration (approximate)	154
■ Opening the transceiver’s case	155
■ Clock backup battery replacement	155
■ Fuse replacement	156
◇ DC power cable fuse replacement	156
◇ Circuitry fuse replacement	156
■ Resetting the CPU	156
■ About protection indications	157
■ Screen saver function	157
12 CONTROL COMMAND	158
■ Remote jack (CI-V) information	158
◇ CI-V connection example	158
◇ Data format	158
◇ Command table	159
◇ Data content description	164
13 SPECIFICATIONS AND OPTIONS	167
■ General	167
■ Transmitter	167
■ Receiver	167
■ Antenna tuner	167
■ Options	168
14 UPDATING THE FIRMWARE	169
■ General	169
■ Caution	169
■ Preparation	170
◇ Firmware and firm utility	170
◇ File downloading	170
■ Firmware update	171
15 CE	173

Match case Limit results 1 per page

■

Squelch and receive (RF) sensitivity

Adjusts the RF ga±n and squelch threshold level.

The squelch removes no±se output from the speaker

(closed pos±t±on) when no s±gnal ±s rece±ved.

• The squelch ±s part±cularly effect±ve for AM and FM. It ±s

also ava±lable for other modes.

• 12 to 1 o’clock pos±t±on ±s recommended for any sett±ng of

the

[RF/SQL]

control.

• The control can be set as ‘Auto’ (RF ga±n control ±n SSB,

CW, RTTY and PSK; squelch control ±n AM and FM) or

squelch control (RF ga±n ±s f±xed at max±mum) ±n others

set mode as follows. (p. 128)

SET MODE

OPERATION

RF+SQL

(default)

Can be used ±n all modes.

Funct±ons as no±se squelch or S-meter

squelch ±n FM modes; S-meter squelch

only ±n other modes.

SQL

Operates as a squelch control.

• RF ga±n ±s ﬁxed at max±mum sens±t±v±ty.

AUTO

Operates as an RF ga±n control ±n

SSB, CW, RTTY and PSK modes.

• Squelch ±s ﬁxed open.

Operates as a squelch control ±n AM

and FM modes.

• RF ga±n ±s ﬁxed at max±mum sens±t±v±ty.

❍

Adjusting RF gain

(Rece±ve sens±t±v±ty)

Normally,

[RF/SQL]

±s set to the 11 o’clock pos±t±on.

Rotate

[RF/SQL]

to the 11 o’clock pos±t±on for max±-

mum sens±t±v±ty.

• Rotat±ng counterclockw±se from the max±mum pos±t±on

reduces sens±t±v±ty.

• The S-meter ±nd±cates rece±ve sens±t±v±ty.

❍

Adjusting squelch

(Remov±ng non-s±gnal no±se)

Rotate

[RF/SQL]

clockw±se when rece±v±ng no s±gnal,

unt±l the no±se just d±sappears.

•

[RX]

±nd±cator l±ght goes out.

• Rotat±ng

[RF/SQL]

past the threshold po±nt ±nvokes the S-

meter squelch— th±s allows you to set a m±n±mum s±gnal

level needed to open the squelch.

[RF/SQL]

• When setting as RF gain/squelch control

Maximum

RF gain

S-meter

squelch

Noise squelch (FM mode)

Squelch is

open.

RF gain

adjustable

range

Recommended level

• When functioning as RF gain control

(Squelch ±s f±xed open; SSB, CW, RTTY, PSK only)

Minimum RF gain

Adjustable

range

Maximum

RF gain

• When functioning as squelch control

(RF ga±n ±s f±xed at max±mum.)

Squelch is

open.

S-meter

squelch

S-meter squelch

threshold

Noise squelch

threshold

(FM mode)

Shallow

Deep

Noise squelch (FM mode)

Wh±le rotat±ng the RF ga±n control, no±se may be

heard. Th±s comes from the DSP un±t and does not

±nd±cate an equ±pment malfunct±on.

BASIC OPERATION