Icom Ic-703 Hf/50mhz All Mode Tranciever Instruction Manual

							36
4RECEIVE AND TRANSMIT
D D
Contest number set mode
This menu is used to set the contest (serial) number
and count up trigger, etc.
•Setting contents
qSelect CW mode with [MODE].
wEnter the memory keyer menu.
• Push[MODE] for 1 sec. to enter the memory keyer
send menu.
• Push
[DISPLAY] momentarily to enter the memory
keyer menu.
ePush [(F-2)001] to enter the contest number set
mode.
rPush [MENU] once or twice to select the desired set
item.
• [M-CH] or [Y]/[Z] can also be used.
tSet the desired condition using the main dial.
yPush [DISPLAY] twice to return to the memory
keyer send menu.
[MENU][DISPLAY][M-CH][F-2]
[MODE]Main dial
[Y]
[Z]
02 CONT UP TRIG(Count up trigger)
This selects which of the three memory slots will have
the contest serial number exchange. The count up
trigger allows the serial number automatically incre-
mented after each complete serial number exchange
is sent.
• 1 (MK1), 2 (MK2) and 3 (MK3) can be set. (default: 2)
CW
02  CNT  UP  TRIG
01 NUM STYLE(Number style)
This item sets the numbering system used for contest
(serial) numbers— normal or morse cut numbers.
n : Does not use morse cut number (default)
190.Ano : Sets 1 as A, 9 as N and 0 as O.
190.Ant : Sets 1 as A, 9 as N and 0 as T.
90.no : Sets 9 as N and 0 as O.
90.nt : Sets 9 as N and 0 as T.CW
01  NUM  STYLE
03 PRESENT No.(Present number)
This item shows the current number for the count up
trigger channel set above.
• Rotate the tuning dial to change the number.
CW
03  PRESENT  No.
4 
						

							37
4RECEIVE AND TRANSMIT
D D
Memory keyer set mode
This set mode is used to set the memory keyer repeat
time and indication type of the messages.
•Setting contents
qSelect CW mode with [MODE].
wEnter the memory keyer menu.
• Push[MODE] for 1 sec. to enter the memory keyer
send menu.
• Push
[DISPLAY] momentarily to enter the memory
keyer menu.
ePush [(F-3)SET] to enter the memory keyer set
mode.
rPush [MENU] to select the desired set item.
• [M-CH] or [Y]/[Z] can also be used.
tSet the desired condition using the main dial.
yPush [DISPLAY] twice to return to the memory
keyer send menu.
[MENU][DISPLAY][M-CH][F-3]
[MODE]Main dial
[Y]
[Z]
01 REPEAT TIME(Repeat time)
When sending CW using the repeat timer, this item
sets the time between transmission.
• 1 to 60 sec. in 1 sec. steps can be selected.
CW
01  REPEAT  TIME
02 MSG DISPLAY(Message display)
This item sets the indication type of the messages
(pre-set characters).
n : Normal indication (default)
[
(F-1)MK1], [(F-2)MK2], [(F-3)MK3]
3 : First three characters of the massages are in-
dicated.
e.g. [
(F-1)CQ ], [(F-2)UR ], [(F-3)CFM]
3.cn : First three characters of the massages and
contest number are indicated.
e.g. [
(F-1)CQ ], [(F-2)001], [(F-3)CFM]
CW
02  MSG  DISPLAY 
						

							38
4RECEIVE AND TRANSMIT
DConnections for RTTY (FSK)
4
8
12
[ACC]
1 2 3
76 5
9
10 11
13
Rear panel
TU or TNC 
Personal computer Rear panel 
 
      view
Colors refer to connection
to the supplied ACC cable.*
1Connect SQL line when required.
MSEND (orenge)
GND (red)
FSKK (black)
SQL*
1 (light green)
AF out (light blue)
Operating RTTY
DRTTY (FSK) operation
qConnect a terminal unit as at above.
wPush [
(Y)BAND]/[(Z)BAND] to select the desired
band.
ePush [MODE] momentarily to select RTTY mode.
• After RTTY mode is selected, push [MODE] for 1 sec.
to toggle between RTTY and SSB-D modes.
rWhile the quick set mode item “Q2” is selected in
RTTY mode, rotate main dial to select RTTY or
åRTTY mode.
• Push [DISPLAY] for 1 sec. to enter the quick set mode.
• Push [MENU] one or more times to select Q2.
• Push [DISPLAY] momentarily to return to normal oper-
ating mode.
tRotate [AF] to set audio to a comfortable listening
level.
ySelect the desired FSK tone/shift frequencies and
keying polarity as at page 40.
uRotate the main dial to tune a desired signal.
• Use [(F-1)1/4] in the M4display when critical setting is
required.
•S-meter indicates received signal strength.
•If the received signal cannot be demodulated, try se-
lecting åRTTY mode (or RTTY mode).
iTransmit a SEND signal from your TNC.
•The TX indicator lights red.
•T
he Po meter indicates transmitted RTTY signal
strength.
oOperate the connected PC or TNC (TU) to trans-
mit RTTY (FSK) signals.
RLSB
CH VFO APO
S1
5 5 379
20 40
10 60dB
USB CWRTTYAM WFM
M4  1/4  TON  AGC
[TX] indicator [MODE]Main dial
[DISPLAY] [F-1]
[MENU]
[F-2]
[AF]
[Y]
[Z]
“RTTY” or “åRTTY” appears
4 
						

							39
4RECEIVE AND TRANSMIT
•Preamp and attenuator(p. 46)
➥Push [P.AMP/ATT] momentarily to set the preamp
ON or OFF.
• Lights green when the preamp is set to ON.
➥Push [P.AMP/ATT] for 1 sec. to set the attenuator
ON.
• Push [P.AMP/ATT] momentarily to turn the attenua-
tor OFF.
• Lights red when the attenuator is set to ON.
•Noise blanker(p. 48)
➥While “M3” is selected, push [
(F-2)NB] to turn the
noise blanker ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M3.
• “NB” appears when the noise blanker is set to ON.
• Push [
(F-2)NB] for 1 sec. to enter the noise blanker
set mode.
•AGC (auto gain control)(p. 48)
➥While “M4” is selected, push [
(F-3)AGC] to select
AGC fast and AGC slow.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
•“F
AGC” appears when the fast time constant is se-
lected.
•IF shift(p. 47)
➥Rotate [SHIFT] control.
•Noise reduction(p. 50)
➥While “S4” is selected, 
push [(F-2)NR] to turn the
noise reduction ON and OFF.
• Push [DISPLAY] once or twice to select S.
• Push [MENU] one or more times to select S4.
• Push [(F-3)NRL] then rotate [M-CH] to adjust the
noise reduction level.
• “NR” appears when the noise reduction is set to ON.
•Auto notch filter(p. 50)
➥While “S4” is selected, 
push [(F-1)ANF] to turn the
auto notch filter function ON and OFF.
• “ANF” appears when the noise reduction is set to
ON.
•1⁄4function
➥While “M4” is selected, push [
(F-1)1/4] to turn
the 1⁄4function ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
DConvenient functions for receive
DRTTY reverse mode
Received characters are occasionally garbled when
the receive signal is reversed between MARK and
SPACE. This reversal can be caused by incorrect
TNC connections, settings, commands, etc.
To receive a reversed RTTY signal correctly, select
åRTTY (RTTY reverse) mode.
qSelect RTTY mode with [MODE].
w
Push [DISPLAY] for 1 sec. to enter quick set mode.
ePush [MENU] one or more times to select “Q2
RTTY  REV,” then rotate the main dial to select
RTTY and åRTTY modes.
• Check the interference tone.
rPush [DISPLAY] momentarily to exit quick set mode.
Reverse Normal
BFO 170
Hz2125
Hz170
Hz 2125
Hz
BFOMark
Space
displayed freq. displayed freq.Mark
Space
[MODE]
Main dial [DISPLAY] [MENU]
QUICK SET MODE 
						

							40
4RECEIVE AND TRANSMIT
DPresetting for RTTY
Tone frequency
qPush [MODE] momentarily to select RTTY mode.
• After RTTY mode is selected, push [MODE] for 1 sec.
to toggle between RTTY and SSB-D modes.
wEnter the RTTY tone set mode.
•Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
• Push [
(F-2)TON] for 1 sec. to enter the RTTY tone set
mode (below).
ePush [MENU] one or more times to select  “R1
RTTY  TONE,” then rotate the main dial to select
the desired frequency.
Shift frequency
qEnter the RTTY tone set mode as same as above.
wPush [MENU] one or more times to select  “R2
RTTY SHIFT,” then rotate the main dial to select
the desired shift frequency.
RTTY keying
qEnter the RTTY tone set mode as same as above.
wPush [MENU] one or more times to select R3
RTTY  KEYING; then rotate the main dial to se-
lect the desired keying polarity.
After presetting is finished, push [DISPLAY] momen-
tarily to return the normal operating mode.
RTTY
R3RTTY KEYING
RTTY keying is set to 
‘normal’.
normal : 
      key open=mark
      key close=space
reverse: 
      key open=space
      key close=mark 
RTTY
R2RTTY SHIFT
RTTY shift frequency 
is set to 170 Hz.
170/200/425 Hz are 
available.
RTTY
R1RTTY TONE
RTTY mark frequency 
is set to 2125 Hz.
2125, 1615 and 1275 
Hz are available.
[MODE]Main dial
[DISPLAY] [MENU]
[F-2]
R3 RTTY KEYING (RTTY only)
This item adjusts the RTTY keying. Normal or reverse
keying can be selected.
The default is “n,” normal.Normal : key open=mark
Reverse : key open=space
RTTY
R1 RTTY TONE
This item selects the RTTY tone. RTTY tone is se-
lected between 1275, 1615 and 2125 Hz.
The default is 2125 Hz.
RTTY
R2 RTTY SHIFT
This item adjusts the RTTY shift. There are 3 selec-
table values: 170, 200 and 425 Hz.
The default is 170 Hz.
RTTY
While M4is selected in RTTY mode, push [(F-2)TON]
for 1 sec. to enter the RTTY tone set mode.
DRTTY tone set mode
4 
						

							41
4RECEIVE AND TRANSMIT
DConvenient functions for receive
DConvenient functions for transmit
Operating AM
qPush [(Y)BAND]/[(Z)BAND] to select the desired
band.
wPush [MODE] momentarily or push for 1 sec. to se-
lect AM  mode.
• After FM or AM mode is selected, push [MODE] for
1 sec. to toggle between FM and AM modes.
eRotate [AF] control to set audio to a comfortable lis-
tening level.
rRotate the main dial to tune a desired signal.
• S-meter indicates received signal strength.
• The default tuning step for AM mode is 1 kHz; this can
be changed using the tuning step program mode. (p.19)
tPush [PTT] (microphone) to transmit.
• The TX indicator lights red.
ySpeak into the microphone at your normal voice
level.
• Adjust ‘MIC GAIN’ at this step, if necessary. (p. 26)
uRelease [PTT] (microphone) to return to receive.
RLSB
CH VFO APO
S1
5 5 379
20 40
10 60dB
USB CW RTTYAMWFM
M1  SPL  A/B  XFC
[TX] indicator [MODE]
Main dial
[AF]
[Y]
[Z]
“AM” appears
•Preamp and attenuator(p. 46)
➥Push [P.AMP/ATT] momentarily to set the preamp
ON or OFF.
• Lights green when the preamp is set to ON.
➥Push [P.AMP/ATT] for 1 sec. to set the attenuator
ON.
• Push [P.AMP/ATT] momentarily to turn the attenua-
tor OFF.
• Lights red when the attenuator is set to ON.
•Noise blanker(p. 48)
➥While “M3” is selected, push [
(F-2)NB] to turn the
noise blanker ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M3.
• “NB” appears when the noise blanker is set to ON.
• Push [
(F-2)NB] for 1 sec. to enter the noise blanker
set mode.
•Initial set mode item “30 AM NB” (p. 80) is must be
set ON when noise blanker function is used in AM
mode. (Default setting is ON.)
•IF shift(p. 47)
➥Rotate [SHIFT] control.•AGC (auto gain control)(p. 48)
➥While “M4” is selected, push [
(F-3)AGC] to select
AGC fast and AGC slow.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
•“F
AGC” appears when the fast time constant is se-
lected.
•Noise reduction(p. 50)
➥While “S4” is selected, 
push [(F-2)NR] to turn the
noise reduction ON and OFF.
• Push [DISPLAY] once or twice to select S.
• Push [MENU] one or more times to select S4.
• Push [(F-3)NRL] then rotate [M-CH] to adjust the
noise reduction level.
• “NR” appears when the noise reduction is set to ON.
•Auto notch filter(p. 50)
➥While “S4” is selected, 
push [(F-1)ANF] to turn the
auto notch filter function ON and OFF.
• “ANF” appears when the noise reduction is set to
ON.
•Speech compressor(p. 54)
➥While “M4” is selected, push [
(F-2)COM] to turn
the speech compressor ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
• “COM” appears when the speech compressor is set
to ON.
• Push [
(F-2)COM] for 1 sec. to enter the compression
level set mode.
•VOX (voice operated transmit)(p. 53)
➥While “M4” is selected, push [
(F-1)VOX] to turn
the VOX function ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
• “VOX” appears when the VOX function is set to ON.
• Push [
(F-1)VOX] for 1 sec. to enter the VOX set
mode. 
						

							42
4RECEIVE AND TRANSMIT
DConvenient functions for receive
DConvenient functions for transmit
Operating FM
qPush [(Y)BAND]/[(Z)BAND] to select the desired
band.
wPush [MODE] momentarily or for 1 sec. to select
FM mode.
• After FM or AM mode is selected, push [MODE] for
1 sec. to toggle between FM and AM modes.
eRotate [AF] control to set audio to a comfortable lis-
tening level.
rRotate the main dial to tune a desired signal.
• S-meter indicates received signal strength.
• The default tuning step for FM mode is 1 kHz; this can
be changed using the tuning step program mode. (p.19)
tPush [PTT] (microphone) to transmit.
• The TX indicator lights red.
ySpeak into the microphone at your normal voice
level.
• Adjust ‘MIC GAIN’ at this step, if necessary. (p. 26)
uRelease [PTT] (microphone) to return to receive.
RLSB
CH VFO APO
S1
5 5 379
20 40
10 60dB
USB CW RTTYAM WFM
M1  SPL  A/B  XFC
[TX] indicator [MODE]
Main dial
[AF]
[Y]
[Z]
“FM” appears
•Preamp and attenuator(p. 46)
➥Push [P.AMP/ATT] momentarily to set the preamp
ON or OFF.
• Lights green when the preamp is set to ON.
➥Push [P.AMP/ATT] for 1 sec. to set the attenuator
ON.
• Push [P.AMP/ATT] momentarily to turn the attenua-
tor OFF.
• Lights red when the attenuator is set to ON.
•IF shift(p. 47)
➥Rotate [SHIFT] control.•Noise reduction(p. 50)
➥While “S4” is selected, 
push [(F-2)NR] to turn the
noise reduction ON and OFF.
• Push [DISPLAY] once or twice to select S.
• Push [MENU] one or more times to select S4.
• Push [(F-3)NRL] then rotate [M-CH] to adjust the
noise reduction level.
• “NR” appears when the noise reduction is set to ON.
•Auto notch filter(p. 50)
➥While “S4” is selected, 
push [(F-1)ANF] to turn the
auto notch filter function ON and OFF.
• “ANF” appears when the noise reduction is set to
ON.
•VOX (voice operated transmit)(p. 53)
➥While “M4” is selected, push [
(F-1)VOX] to turn
the VOX function ON and OFF.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
• “VOX” appears when the VOX function is set to ON.
• Push [
(F-1)VOX] for 1 sec. to enter the VOX set
mode.
4 
						

							43
4RECEIVE AND TRANSMIT
Tone squelch operation is a method of communica-
tions using selective calling. Only received signals
having a matching tone will open the squelch. Before
communicating using tone squelch, all members of
your party must agree on the tone squelch frequency
to use.
qPush [MODE] one or more times to select FM
mode.
wSelect M4.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
ePush [(F-2)TON] for 1 sec. to enter the FM tone set
mode.
• Push [MENU] one or more times to select “T2  TONE
SQL.”
rRotate the main dial to set the desired subaudible
tone frequency.
• See left table for available tone frequencies.
• Push [DISPLAY] to exit the FM tone set mode.
tPush [(F-2)TON] once or twice to turn the tone
squelch function.
• “TSQL” appears.
yCommunicate in the usual manner.
• Push [PTT] to transmit; release to receive.
•Available tone squelch frequencies(Unit: Hz)
CH VFO APO
S1
5 5 379
20 40
10 60dB
FM TSQLSPL
M4  VOX  TON
T2
TONE SQL
FM
[MODE]Main dial
[DISPLAY] [MENU]
[F-2]
DTone squelch operation
By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.
qDuring tone squelch or repeater operation (“T” or
“TSQL” is displayed, select M4.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M4.
wPush [(F-2)TON] for 1 sec. to enter the FM tone set
mode.
• Push [MENU] one or more times to select “T3 T-SQL
SCN” during tone squelch operation or “T3  RPTR-T
SCN” during repeater operation.
• If tone squelch function or tone encoder has not been
selected, this item does not appear.
ePush [(F-3)SCN] to toggle the tone scan operation
ON and OFF.
• While scanning, tone frequencies are displayed instead
of the operating frequency.
• When a matched tone is detected, tone scan automati-
cally stops, the matched tone is displayed and the re-
peater tone (or tone squelch tone) setting is
automatically adjusted accordingly.
rPush [DISPLAY] to exit the FM tone set mode.
During repeater 
operation.
PO
S1
5 5 3792040
10 60dB
FM T
T3
RPTR-TSCN
During tone squelch 
operation.
PO
S1
5 5 3792040
10 60dB
FM TSQL
T3
T-SQLSCN
Main dial
[DISPLAY] [MENU]
[F-2]
[F-3]
67.0
69.3
71.9
74.4
77.0
79.7
82.5085.4
088.5
091.5
094.8
097.4
100.0
103.5107.2
110.9
114.8
118.8
123.0
127.3
131.8136.5
141.3
146.2
151.4
156.7
159.8
162.2165.5
167.9
171.3
173.8
177.3
179.9
183.5186.2
189.9
192.8
196.6
199.5
203.5
206.5210.7
218.1
225.7
229.1
233.6
241.8
250.3254.1
DTone scan operation 
						

							44
4RECEIVE AND TRANSMIT
T3 RPTR-T SCN(Repeater tone scan)
During repeater operation, you can detect the tone
frequency necessary to open a repeater. (see p. 45)The default is 88.5 Hz.
FM-T
T3 T-SQL SCN(Tone squelch tone scan)
During tone squelch operation, you can detect the
tone frequency necessary to communicate using tone
squelch. (see p. 43)The default is 88.5 Hz.
FM-TSQL
T1 RPTR TONE
This item selects a subaudible tone for FM-T mode
operation to access a repeater. There are 50 tones
available from 67.0 Hz to 254.1 Hz (see table at
right).
•Available subaudible tone frequencies
(Unit: Hz)
The default is 88.5 Hz.
FM
T2 TONE SQL
This item sets a subaudible tone for tone squelch use.
The same subaudible tone frequencies as for re-
peater operation are available—see above
The default is 88.5 Hz.
FM
While M4is selected in FM mode, push [(F-2)TON] for
1 sec. to enter the FM tone set mode.
DFM tone set mode
67.0
69.3
71.9
74.4
77.0
79.7
82.5085.4
088.5
091.5
094.8
097.4
100.0
103.5107.2
110.9
114.8
118.8
123.0
127.3
131.8136.5
141.3
146.2
151.4
156.7
159.8
162.2165.5
167.9
171.3
173.8
177.3
179.9
183.5186.2
189.9
192.8
196.6
199.5
203.5
206.5210.7
218.1
225.7
229.1
233.6
241.8
250.3254.1
4 
						

							45
4RECEIVE AND TRANSMIT
Repeater operation
A repeater amplifies received signals and re-transmits
them at a different frequency. When using a repeater,
the transmit frequency is shifted from the receive fre-
quency by an offset frequency. A repeater can be ac-
cessed using split frequency operation with the shift
frequency set to the repeater’s offset frequency.
qSet the offset frequency and turn ON the quick split
function in initial set mode in advance (pgs. 79, 80).
• If the quick split function is turned OFF, both transmit
and receive must be set separately.
wPush [MODE] one or more times to select FM
mode, then set the receive frequency.
eSelect M1.
• Push [DISPLAY] once or twice to select M.
• Push [MENU] one or more times to select M1.
rPush [(F-1)SPL] for 1 sec. to activate the split fre-
quency function with the pre-selected offset.
tSelect M4.
• Push [MENU] one or more times to select M4.
yPush [(F-2)TON] for 1 sec. to enter the FM tone set
mode.
• If FM mode has not been selected, this item does not
appear.
• Push [MENU] one or more times to select “T1  RPTR
TONE.”
• Rotate the main dial to set a subaudible tone frequency.
• Push [DISPLAY] to exit the FM tone set mode.
uPush [(F-2)TON] to turn the tone encoder.
• “T” appears.
iTo check the repeater input frequency (direct sig-
nal from the other station), push and hold
[
(F-3)XFC] in the M1display.
oTo return to simplex operation, push [
(F-1)SPL] in
the M1display.
Each memory channel can store a tone frequency
and an offset frequency, as well as the operating fre-
quency. Store repeater information into memory chan-
nels for quick and easy access to repeaters.•Available subaudible tone frequencies
(Unit: Hz)
CH VFO APO
S1
5 5 379
20 40
10 60dB
FM TSPL
M4  VOX  TON
T1
RPTR TONE
Set the tone fre-
quency.
See below table 
for available fre-
quencies.FM
CH VFO APO
S1
5 5 379
20 40
10 60dB
FMSPL
M1  SPL  A/B  XFC
24
QUICK SPLIT
Turn the quick 
split function ON.
(Initial set mode 
default is ON.)
[MODE]Main dial
[DISPLAY] [MENU]
[F-2]
[F-3][F-1]
CONVENIENT
N NO
OT
TE
E:
:
The split function may not be turned off
when you change the operating band, push 
[(F-1)SPL] again to turn off the split function after
you finish the repeater operation.
67.0
69.3
71.9
74.4
77.0
79.7
82.5085.4
088.5
091.5
094.8
097.4
100.0
103.5107.2
110.9
114.8
118.8
123.0
127.3
131.8136.5
141.3
146.2
151.4
156.7
159.8
162.2165.5
167.9
171.3
173.8
177.3
179.9
183.5186.2
189.9
192.8
196.6
199.5
203.5
206.5210.7
218.1
225.7
229.1
233.6
241.8
250.3254.1