![Icom IC-703 [69/112] I speech compressor](/img/pdf.png)
Icom IC-703 [69/112] I speech compressor
![Icom IC-703 [69/112] I speech compressor](/views2/1074390/page69/bg45.png)
54
6
FUNCTION FOR TRANSMIT
The IC-703 has a built-in, low distortion speech com-
pressor circuit. This circuit increases your average
talk power in SSB mode and is especially useful for
DX’ing when the receiving station is having difficulty
copying your signal.
q Select USB or LSB mode.
w Select the mic gain display in quick set mode.
• Push [DISPLAY] for 1 sec.
•Push [MENU] one or more times to select “Q2 MIC
GAIN.”
•The ALC meter is selected automatically when operat-
ing in SSB mode.
e Adjust the mic gain.
•While transmitting at your normal voice level, the ALC
meter should read at about the middle of the ALC zone.
• Be sure the mic gain is in the range of 2 to 5.
r Select the ALC meter.
• Push [DISPLAY] once or twice to select M.
•Push [MENU] one or more times to select M3, then
push [
(F-3)MET] one or more times to select “ALC.”
t Push [MENU] one or more times to select M4.
y Push [
(F-2)
COM] to turn the speech compressor
function ON.
• “COM” appears.
u Push [(F-2)COM] for 1 sec. to enter the compres-
sion level set mode (below).
i Rotate the main dial to set the speech compression
level.
NOTE:
When the ALC meter peaks above the ALC
zone, your transmitted voice may be distorted.
ALC
Adjust ‘COMP LEVEL’ so that the ALC meter
reads within the ALC zone.
ALC zone
[DISPLAY][MENU]
[MODE]
Main dail[F-2]
[F-3]
R
LSB
CH
VFO A
P
O
S1
5
5379
20 40
10
60dB
USB CW R
TT
Y
AM WFM
M4 VOX COM AGC
VOX COM
■ Speech compressor
While M4 is selected in SSB/AM modes, push
[
(F-2)
COM] for 1 sec. to enter the compression level set
mode.
D Compression level set mode
C1 COMP LEVEL
This item adjusts the speech compression level. The
speech compression level can be adjusted from 0 to
10.
The default is 5.
USB
6
Содержание
- Instruction manual 1
- Beat signals may be heard on some frequencies these will occur as a result of circuit construction 2
- Before attempting to operate the transceiver 2
- Caution equipment damage may occur 2
- Dsp features af dsp ut 106 2
- Explicit definitions 2
- Features 2
- For u s a only 2
- Foreword 2
- Important 2
- Note if disregarded inconvenience only no risk or personal injury fire or electric shock 2
- Precaution 2
- R neve 2
- R warning high voltage neve 2
- R warning personal injury fire hazard or electric shock may occur 2
- R warning rf exposure 2
- Read this instruction manual carefull 2
- Required some version all mode capability covering 160 6 m 9 15 7 v operation compact with detachable front panel 0 ppm of high frequency stability built in antenna tuner simple band scope function 2
- Save this instruction manual 2
- Thank we understand that you have a choice of many different radios in the market place we want to take a couple of moments of your time to thank you for mak ing the ic 703 your radio of choice and hope you agree with icom s philosophy of technology first many hours of research and development went into the design of your ic 703 2
- This manual contains important safety and operating in structions for the ic 703 2
- Word definition 2
- Panel description 1 10 3
- Quick reference 3
- Quick reference guide i x 3
- Supplied accessories 3
- Table of contents 3
- Antenna tuner operation 64 66 4
- Basic operation 17 26 4
- Function for receive 46 50 4
- Function for transmi 4
- Memory operation 56 60 4
- Receive and transmit 27 45 4
- Scan operation 61 63 4
- Table of contents 4
- About ce 95 96 5
- Control command 71 73 5
- Data communication 67 70 5
- Maintenance 83 5
- Menu guide 93 94 5
- Optional unit installations and settings 86 89 5
- Options 91 92 5
- Quick reference 5
- Set mode 74 82 5
- Specifications 90 5
- Table of contents 5
- Troubleshooting 84 85 5
- Grounding your shack 6
- I installation 6
- Installing your dc power supply 6
- Quick reference guide 6
- R warning neve 6
- Antenna swr 7
- Installing lightning protection 7
- Installing your antenna system 7
- Quick reference 7
- Connect other peripheral equipment 8
- I operation 8
- D getting started 9
- I your first contact 9
- Other convenient items 9
- Quick reference 9
- Adjust audio output 10
- Adjust this control to a comfortable audio level 10
- Band is the main dial this will allow you to dial in the frequency you want to operate you will notice the tuning speed ts is 10 hz resolution page 20 will instruct you on how to set the tuning speed ts for 1 hz resolution 10
- Band located just right corner on the front panel 10
- Band or 10
- Band several times to select it this will change the displayed operating frequency to the 20 meter band 10
- Band to select the desired band 10
- D just listening 1 select the desired band 10
- Directly left of the 10
- Note the band stacking register can also be used to select bands refer to p 22 10
- On your ic 703 an easy way of changing bands is by using the 10
- Quick reference guide 10
- Say you want to go to 20 meters or 14 mhz you would push 10
- Tune to the desired frequency 10
- D what are you hearing 11
- Quick reference 11
- Reducing interference some functions may require an optional unit depending on version 11
- S4 anf nr nrl 11
- S4 level 4 nrl 11
- Verify mode 11
- M3 fil nb met 12
- N1 nb level 12
- S4 anf nr nrl 12
- M3 fil nb met 13
- Quick reference 13
- Ccw counterclockwise 14
- E push menu one or more times to select q2 mic gain 14
- I ready to call cq 14
- Microphone gain must be adjusted properly so that your signal does not distort when transmitted 14
- Q select ssb or another phone mode am or fm mode 14
- Q2 mic gain 14
- Quick reference guide 14
- R while speaking into the microphone rotate the main dial to adjust the microphone gain so that the alc meter does not peak past the alc zone 14
- Setting up your mic gain 14
- T push display to exit quick set mode 14
- C1 comp level 15
- Quick reference 15
- Speech compressor 15
- Verify you have selected a clear frequency and call out your cq 15
- I front panel 16
- M1 spl a b xfc 16
- Panel description 16
- A b xfc 19
- D m1 functions 19
- D m2 functions 19
- D m3 functions 19
- Filter selection p 49 push to toggle the narrow filter or wide filter push for 1 sec on and off 19
- I multi function switches 19
- Memory clear p 58 push for 1 sec to clear the selected read out memory channel contents 19
- Memory write p 57 push for 1 sec to store the selected read out frequency and operating mode into the displayed memory channel 19
- Noise blanker p 48 push momentarily to toggle the noise blanker on and off 19
- Panel description 19
- Push for 1 sec to enter the noise blanker level set mode 19
- Push for 1 sec to turn the quick split func tion on p 52 19
- Split operation p 30 push momentarily to toggle the split func tion on and off p 51 19
- Transmit frequency check p 51 monitors the transmit frequency when pushed and held 19
- Vfo a b selection push momentarily to toggle vfo a and vfo b in vfo mode p 18 push momentarily to toggle the transmis sion vfo and reception vfo during split operation p 51 push momentarily to toggle the transmit and receive frequencies and modes of memory channels when the split function is turned on push for 1 sec to equalize the frequency and operatingmode of the two vfo s 19
- Vfo memory push momentarily to toggle between vfo and memory modes p 56 push for 1 sec to transfer the frequency and operating mode in the selected mem ory channel to a vfo p 58 19
- 4 function push to toggle the 1 4 tuning function on and off 20
- Agc p 48 push to change the time constant of the agc circuit 20
- D m4 functions 20
- During cw operation 20
- During fm operation 20
- During rtty operation 20
- During ssb am operation 20
- During ssb d operation 20
- Fm tone operation push momentarily to select the subaudi ble tone encoder for repeater use tone squelch function and off pgs 43 45 20
- Key 1 4 20
- Keyer set mode p 32 push for 1 sec to enter the keyer set mode 20
- Meter selection p 52 selects the type of meter displayed dur ing transmit in the function display 20
- Panel description 20
- Push for 1 sec to enter the compression level set mode 20
- Push for 1 sec to enter the fm tone set mode p 44 20
- Push for 1 sec to enter the vox set mode 20
- Rtty tone set mode p 40 push for 1 sec to enter the rtty tone set mode 20
- Speech compressor p 54 push momentarily to toggle the speech compressor on and off 20
- Vox function p 53 push momentarily to toggle the vox func tion on and off 20
- What is the break in function 20
- What is the vox function 20
- D s1 functions 21
- D s2 functions 21
- D s3 functions 21
- D s4 functions 21
- I rear panel 22
- D acc socket 23
- D data socket 23
- Panel description 23
- I function display 24
- M1 spl a b xfc 24
- Caution 25
- I microphone hm 103 25
- Technical information 25
- Antenna swr 26
- Caution 26
- I antenna connection 26
- I grounding 26
- I selecting a location 26
- I unpacking 26
- Installation and connections 26
- R warning neve 26
- Caution 27
- D front panel mounting 27
- D front panel separation 27
- D single body mounting d stand 27
- I installation 27
- I required connections 28
- I advanced connections 29
- Caution 30
- I battery connections 30
- I dc power supply connections 30
- I dc power voltage 30
- R warning neve 30
- I external antenna tuners and linear amplifier 31
- R warning 31
- Basic operation 32
- D m1 display selection 32
- I initial settings 32
- I when first applying power cpu resetting 32
- D the differences between vfo and memory mode 33
- I vfo description 33
- M1 spl a b xfc 33
- Band selection 34
- I frequency setting 34
- M1 a b xfc 34
- Programmable tuning steps 34
- Rotate 34
- 1 hz and 10 hz tuning steps 35
- 1 mhz quick tuning step 35
- Basic operation 36
- Q push rit sub to turn the sub dial function on 36
- Rotate dial 36
- Ssb cw rtty modes any mode fm am modes 36
- Sub dial function 36
- The sub dial function allows you to change the oper ating frequency using the m ch control this gives you more control in tuning since the m ch knob is detented each click changes the frequency accord ing to the set tuning step this function is always available in fm and am modes however in ssb cw and rtty modes the initial set mode item 21 sub dial p 1 must be set to freq 36
- Ts switch flow chart 36
- W rotate m ch to change the operating frequency according to the set tuning step e push rit sub again to turn the function off 36
- Quick band change function 37
- S3 7 14 21 37
- S3 7 gen 21 37
- Cw å cw reverse mode selection 38
- I operating mode selection 38
- I volume setting 38
- Ssb lsb usb cw rtty ssb d fm and am modes selection 38
- Å rtty rtty reverse mode selection 38
- I squelch and receive rf sensitivity 39
- D maximum output power 40
- D transmitting 40
- I basic transmit operation 40
- I dial lock function 40
- Max powset 40
- D setting microphone gain 41
- D setting output power 41
- Q1 rf power 41
- Q2 mic gain 41
- I operating ssb 42
- M1 spl a b xfc 42
- Receive and transmit 42
- D connections for cw 43
- I operating cw 43
- K4 cw paddle 43
- Receive and transmit 43
- 0 keying to transmit use the electric keyer or pad dle to key your cw signals 44
- 1 release keying to return to receive 44
- Band to select the desired band e p ush mode momentarily to select cw mode 44
- D cw operation 44
- I set cw break in operation as semi break in full break in or off 44
- K1 bk in 44
- K2 bk in delay 44
- M4 1 4 key agc 44
- M4 key 1 4 agc 44
- O set the cw delay time when semi break in opera tion is selected 44
- Q connect a paddle or straight key as at previous page 44
- R while the quick set mode item q3 is selected in cw mode rotate main dial to select cw or cw å mode 44
- Receive and transmit 44
- T rotate af control to set audio to a comfortable listening level y rotate the main dial to simultaneously tune a de sired signal and its side tone 44
- U set cw setting in the keyer set mode 44
- W push 44
- D convenient functions for receive 45
- D convenient functions for transmit 45
- D cw reverse mode 45
- D cw pitch control 46
- D electronic cw keyer 46
- K3 cw pitch 46
- Setting the electronic keyer 46
- D cw side tone function 47
- D keyer set mode 47
- K1 bk in 47
- K2 bk in delay 47
- K3 cw pitch 47
- K4 cw paddle 47
- K5 ratio 47
- Cnt up trig 48
- E push display to enter the memory keyer menu see the diagram below 48
- Edt 001 set 48
- I memory keyer functions 48
- M4 1 4 key agc 48
- Mk1 mk2 mk3 48
- Msg display 48
- Num style 48
- Present no 48
- Q select cw mode with mode w push mode for 1 sec to select the memory keyer send menu 48
- Receive and transmit 48
- Repeat time 48
- The transceiver has a number of convenient functions for the electronic keyer that can be accessed from the memory keyer menu 48
- Åcfu tu ç _ 48
- Åcq test cç _ 48
- Åur 5nn bç _ 48
- D memory keyer send menu 49
- D editing a memory keyer 50
- Edt 001 set 50
- Mk1 mk2 mk3 50
- Å del ç 50
- Åcfu tu ç 50
- Åq ç 50
- Åsl tu d ç 50
- Åyua test ç 50
- Cnt up trig 51
- Cont up trig count up trigger 51
- D contest number set mode 51
- Num style 51
- Num style number style 51
- Present no 51
- Present no present number 51
- D memory keyer set mode 52
- Msg display 52
- Msg display message display 52
- Repeat time 52
- Repeat time repeat time 52
- I operating rtty 53
- M4 1 4 ton agc 53
- D convenient functions for receive 54
- D rtty reverse mode 54
- D presetting for rtty 55
- D rtty tone set mode 55
- R1 rtty tone 55
- R2 rtty shift 55
- R3 rtty keying 55
- Agc auto gain control p 48 while m4 is selected push 56
- Agc to select agc fast and agc slow 56
- Auto notch filter p 50 while s4 is selected 56
- Band to select the desired band w push mode momentarily or push for 1 sec to se lect am mode 56
- Com to turn the speech compressor on and off 56
- D convenient functions for receive 56
- D convenient functions for transmit 56
- E auto notch filter function on and off 56
- E rotate af control to set audio to a comfortable lis tening level r rotate the main dial to tune a desired signal 56
- I operating am 56
- If shift p 47 rotate shift control 56
- M1 spl a b xfc 56
- Nb to turn the noise blanker on and off 56
- Noise blanker p 48 while m3 is selected push 56
- Noise reduction p 50 while s4 is selected 56
- Preamp and attenuator p 46 push p amp att momentarily to set the preamp on or off 56
- Push p amp att for 1 sec to set the attenuator on 56
- Q push 56
- Receive and transmit 56
- Speech compressor p 54 while m4 is selected push 56
- T push ptt microphone to transmit 56
- U release ptt microphone to return to receive 56
- Vox to turn the vox function on and off 56
- Vox voice operated transmit p 53 while m4 is selected push 56
- Y speak into the microphone at your normal voice level 56
- D convenient functions for receive 57
- D convenient functions for transmit 57
- I operating fm 57
- M1 spl a b xfc 57
- D tone scan operation 58
- D tone squelch operation 58
- M4 vox ton 58
- T2 tone sql 58
- T3 rptr t scn 58
- T3 t sql scn 58
- D fm tone set mode 59
- T1 rptr tone 59
- T2 tone sql 59
- T3 rptr t sc 59
- T3 t sql sc 59
- I repeater operation 60
- M1 spl a b xfc 60
- M4 vox ton 60
- Quick split 60
- T1 rptr tone 60
- Function for receive 61
- Calculate function 62
- Graphic display 62
- I if shift function 62
- I rit function 62
- D noise blanker level set mode 63
- I agc time constant 63
- I noise blanker 63
- M3 fil nb met 63
- M4 vox com agc 63
- N1 nb level 63
- Consult the table below to select a filter most suitable for your operating needs 64
- Fil momentarily to select the narrow filter push for 1 sec to select the wide filter 64
- Filter on off q select m3 64
- Filter presetting after you install a filter see p 87 for installation you must specify the installed filter in initial set mode item 22 opt fil see p 79 64
- Filter variations 64
- Function for receive 64
- I optional filter selection 64
- Narrow filters help reject interference from adjacent signals and obtain good selectivity 64
- Narrow filters for am fm modes are standard 64
- One optional filter can be installed in the ic 703 64
- Optional filter installation and selection tables 64
- Ssb cw rtty 64
- W push 64
- When selecting the narrow filter or wide fil ter the graphic passband is changed see dia gram below 64
- Wide filters provide improved audio for ssb operation when no interfering signals are present 64
- D anf automatic notch filter function 65
- D nr noise reduction function 65
- I dsp functions 65
- I peak meter hold 65
- May require an optional unit depending on version see p 92 65
- S4 anf nr nrl 65
- S4 level 4 nrl 65
- Function for transmit 66
- I split frequency operation 66
- M1 spl a b xfc 66
- I meter selection 67
- Spl offset 67
- D vox set mode 68
- I vox operation 68
- M4 vox com agc 68
- V1 vox delay 68
- V2 vox gain 68
- V3 anti vox 68
- C1 comp level 69
- I speech compressor 69
- M4 vox com agc 69
- G2 10k str 70
- I memory channel selection 71
- I memory channels 71
- Memory operation 71
- E rotate m ch to select the desired memory chan nel 72
- Example 72
- I memory programming 72
- Memory operation 72
- Mw for 1 sec to program the displayed frequency and operating mode into the memory channel 72
- Programming in memory mode 72
- Programming in vfo mode 72
- Q select m2 functions 72
- R push 72
- To check the programmed contents push 72
- V m to select memory mode 72
- V m to select memory mode then se lect the desired memory channel with m ch 72
- W set the desired frequency and operating mode e push 72
- W set the desired frequency and operating mode in vfo mode 72
- Any unnecessary memory channels can be cleared the cleared memory channels become blank chan nels 73
- Example transferring contents of memory 16 73
- I frequency transferring 73
- I memory clearing 73
- Mcl for 1 sec to clear the contents 73
- Memory operation 73
- Q select m2 functions 73
- R push 73
- T to return to vfo mode push 73
- The frequency and operating mode can be trans ferred from memory mode to vfo mode 73
- V m again 73
- V m e select a memory channel with m ch 73
- V m for 1 sec to transfer the frequency and operating mode 73
- V m to select memory mode e rotate m ch to select a memory channel to be cleared r push 73
- W push 73
- W select vfo mode with 73
- Calling up memory names 74
- Editing programming memory names 74
- G4 memory name 74
- G4 repeater é 74
- I memory names 74
- Äåre ç 74
- Äårepeateröç 74
- Äåö 74
- Calling up a frequency from a memo pad 75
- I memo pads 75
- Writing frequencies and operating modes into memo pads 75
- Channels 76
- I preparation 76
- I scan types 76
- Scan operation 76
- Scan resume on off 76
- Scan speed 76
- Squelch condition 76
- I memory scan operation 77
- I programmed scan operation 77
- S2 scn pri v m 77
- S2 scn sel v m 77
- I priority watch 78
- I select memory scan operation 78
- S2 scn pri v m 78
- S2 scn sel v m 78
- Antenna tuner operation 79
- I antenna tuner operation 79
- Caution 80
- D optional at 180 80
- D optional external tuner operation 80
- Operation 80
- D optional ah 4 81
- Operation 81
- R danger high voltage 81
- D when connecting to acc socket 82
- D when connecting to data socket 82
- D when connecting to mic connector 82
- Data communication 82
- I connections for packet 82
- D frequency indication during afsk operation 83
- I packet afsk operation 83
- M4 1 4 ton agc 83
- D carrier point setting 84
- D ssb d mode selection 84
- Data communication 84
- Note when ssb d mode is selected the audio input from the mic connector is automatically cut and the audio input from the acc is used 84
- Operating mode selection 84
- Q push mode one or more times to select rtty mode w push mode for 1 sec to ssb d mode 84
- Q select ssb d mode with mode w push display for 1 sec to enter quick set mode e push menu one or more times to select q2 car side then rotate the main dial to select u usb mode or l lsb mode 84
- D adjusting the transmit signal from the tnc 85
- Control command 86
- D ci v connection example 86
- D data format 86
- I remote jack ci v information 86
- Command table 87
- Command table continued 88
- Control command 88
- D band stacking register 88
- D codes for memory keyer contents 88
- D codes for memory name contents 88
- I general 89
- Set mode 89
- I quick set mode items 90
- Q1 rf power 90
- Q2 car side 90
- Q2 key speed 90
- Q2 mic gain 90
- Q2 rtty rev 90
- Q3 carrier frq 90
- Q3 cw rev 90
- 5 mode powset 91
- I initial set mode items 91
- Max powset 91
- Mode selec 91
- Posave mode 91
- Simple mode 91
- 10 cw nor side 92
- 12 sid t limit 92
- 7 band bee 92
- 9 beep limit 92
- Beep level 92
- Sid t level 92
- 13 sync tuning 93
- 16 light timer 93
- 18 auto off 93
- Back light 93
- Key light 93
- Led brigh 93
- 20 rf sq 94
- 21 sub dia 94
- 23 peak hold 94
- 24 quick split 94
- Current ip 94
- Opt fil 94
- 25 split lock 95
- 30 am n 95
- Scan resume 95
- Scan spee 95
- Spl offset 95
- U d spee 95
- 33 a tune strt 96
- 34 ptt tun 96
- 35 tuner sw 96
- 9600 mod 96
- Pwr on chk 96
- 41 ci v baud 97
- 42 ci v trn 97
- 43 ci v 731 97
- Ci v addres 97
- S lvl spch 97
- Speech lang 97
- Speech spd 97
- Caution 98
- I cleaning 98
- I fuse replacement 98
- I memory backup 98
- Maintenance 98
- Possible cause solution ref 99
- Power supply receive 99
- Problem 99
- The following chart is designed to help you correct problems which are not equipment malfunctions if you are unable to locate the cause of a problem or solve it through the use of this chart contact your near est icom dealer or service center 99
- Troubleshooting 99
- Possible cause solution ref 100
- Problem 100
- Transmit display scan 100
- Troubleshooting 100
- I ut 102 101
- Option unit installations and settings 101
- I if filter 102
- Carrying handle 103
- Dsp receiver unit 103
- I mb 72 103
- I ut 106 103
- D c b a 104
- I at 180 internal switch description 104
- I antenna tuner 105
- I general 105
- I receiver 105
- I transmitter 105
- Specifications 105
- Antenna element 106
- Ci v level converter unit 106
- Desktop microphone 106
- External speaker 106
- Hand microphone 106
- Hf 50 mhz automatic antenna tuner 106
- Hf automatic antenna tuner 106
- Mobile mounting bracket 106
- Mounting bracket 106
- Optional filters 106
- Options 106
- Voice synthesizer unit 106
- Acc 13 pin cable 107
- Adaptor cable 107
- Bp 228 107
- Carrying handle 107
- Dc power adaptor cable 107
- Dc power supply 107
- Dsp receiver 107
- Lc 156 107
- Microphone adaptor cable 107
- Mounting base 107
- Multi bag with controller case 107
- Ni cd battery pack 9 v 2800 mah 107
- Opc 1248 107
- Opc 581 587 107
- Opc 589 107
- Opc 59 107
- Options 107
- Ps 125 107
- Separation cable 107
- Ut 106 107
- Initial set mode 108
- Menu guide 108
- Power on 108
- Quick set mode 109
- About ce 110
- Installation notes 110
- Declaration of conformity 111
- Version and frequency coverage 111
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