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

15
86
OPTION UNIT INSTALLATIONS AND SETTINGS
Opening the transceiver case
To remove the transceiver case unscrew the 18 screws
(5 in the top panel, 5 in the bottom panel, 8 in the side
panels: 4 pieces each) as shown in the diagram below.
UT-102 VOICE SYNTHESIZER UNIT
The UT-102 announces the accessed band’s fre-
quency, mode, etc. (S-meter level can also be an-
nounced—p. 82) in a clear, electronically generated
voice, in English (or Japanese).
qRemove the top cover as shown above.
wConnect the UT-102...

87
15OPTION UNIT INSTALLATIONS AND SETTINGS
IF filter
Several IF filters are available for the IC-703. Choose
a filter most appropriate to your operating needs.
NOTE:After filter installation, specify the installed
filter using initial set mode (item 22, p.79). Other-
wise, the installed filter will not function properly.
FL-52A
CW/RTTY NARROW FILTER500 Hz/–6 dB
FL-53A
CW NARROW FILTER250 Hz/–6 dB
FL-222 
SSB NARROW FILTER1.8 kHz/–6 dB
FL-257 
SSB WIDE FILTER3.3 kHz/–6 dB
qRemove the top cover as shown on the...

88
15OPTION UNIT INSTALLATIONS AND SETTINGS
UT-106 DSP RECEIVER UNIT
qOpen the transceiver top cover as shown on p. 86.
wRemove the 4-pin connector (P2451) from main
CPU shielding case on the MAIN unit (top side)
and plug it into J1 of the UT-106.
ePlug the 4-pin connector (P1) from the UT-106 into
J2451 on the MAIN unit.
rPlug the supplied flat cable into J3 on the UT-106
and J2453 on the MAIN unit.
• Be careful of the orientation of the flat cable.
tAttach the UT-106 to the main CPU shielding case,...

89
15OPTION UNIT INSTALLATIONS AND SETTINGS
AT-180 internal switch description
The optional AT-180 has 3 operating conditions for HF
band operation. Select a suitable condition according
to your antenna system.
qRemove the top cover of the AT-180.
wSet the tuner switches to the desired positions ac-
cording to the table below.
•Specifications for the AT-180
• Frequency coverage : 1.9 – 54 MHz
• Input impedance : 50 Ω
• Maximum input : 120 W
power
• Minimum tuning : 8 W
power
• Matching impedance :...

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90
SPECIFICATIONS
General
• Frequency coverage : Receive
30 kHz – 60.00000 MHz*
Transmit
1.800 – 1.99999 MHz*
3.500 – 3.9999 MHz*
7.000 – 7.300 MHz*
10.100 – 10.150 MHz
14.000 – 14.350 MHz
18.068 – 18.168 MHz
21.000 – 21.450 MHz
24.890 – 24.990 MHz
28.000 – 29.700 MHz
50.000 – 54.000 MHz*
*Depending on version.
• Mode : SSB, CW, AM, FM, RTTY
• Number of memory : 105 
(split memory: 99; scan edges: 6)
channels
• Antenna connector : SO-239 /50 Ω
• Usable temperature : –10°C to +60°C (+14°F to +140°F)...

MB-63MOUNTING BRACKET
Metal plate for attaching the front panel to a
wall or other such flat surface.
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91
OPTIONS
AT-180HF/50 MHz AUTOMATIC
ANTENNA TUNER
Fully automatic antenna tuner with preset
memories for each 100 kHz. Unique “auto-
matic tuner on” function is available. See
p. 89 for AT-180 specifications.
HM-103HAND MICROPHONE
Standard hand microphone.
AH-4HF AUTOMATIC ANTENNA
TUNER
Specially designed to tune a long wire an-
tenna for portable or mobile HF/50 MHz op-
eration. The “PTT tune”...

92
17OPTIONS
BP-228 
Ni-Cd BATTERY PACK (9.6 V, 2800 mAh)
Provides outdoor operation (max. output power 5 W).
OPC-1248 DC POWER ADAPTOR CABLEProvides to connect PS-125. Connects 3-pin DC cable (OPC-1229) to 6-pin connector.
MB-65MOUNTING BASE
Allows you to conveniently vehicle-mount
the front panel of the IC-703. An MB-63
must be used in combination with the MB-
65.
OPC-598ACC 13-PIN CABLE
Required when using the AT-180.
MB-72CARRYING HANDLE
Convenient when carrying the transceiver.
OPC-581/587...

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93
MENU GUIDE
CI-V ADDRES
CURRENT IP
Initial set mode
No. Indication Description
1 MAX POWSET
2 PoSAVE MODE
3 SIMPLE MODE
4 MODE SELECT
5 MODE POWSET
6 BEEP
7 BAND BEEP
8 BEEP LEVEL
9 BEEP LIMIT
10 CW NOR SIDE
11 SID-T LEVEL
12SID-T LIMIT
Max. output power setting
Power save setting
Simple mode setting
Mode availability
Power setting for mode
Confirmation beeps
Band edge beeps
Beep level adjustment
PTT tune function
Tuner switch condition
Packet data speed CW side tone levelSplit offset frequency...

94
18MENU GUIDE
M1 SPL A/B XFC
M2 MW MCL V/M
M3 FIL NB MET
M4 VOX COM AGC
VOX M4 COMTON
TON 1/4 1/4
M4 AGCKEY M4 AGC
S1 MW MPW MPR
S2 SCN PRI
SELV/M
Quick set mode
For 1 sec.
(SSB/AM)(in memory
 mode)
(CW)
(RTTY)
(FM)
S3 7 14 21
S4 ANF NR NRL
G1 BAND scope
G2 SWR Graph
G3 TX freq.
G4 Memory name
1/4 M4 AGC(SSB-D)
DISPLAY
DISPLAY
DISPLAYDISPLAY
MENU
MENU
Y
Y
M-CH
No.
Q1 RF POWER RF POWER RF POWER
Q2 MIC GAIN KEY SPEED
RTTY REV
Q3CARRIER 
Frq*
1CW REV SSB/AM/FM
modeCW
modeRTTY
mode
RF POWER
CAR SIDESSB-D...

19
95
ABOUT CE
INSTALLATION NOTES
For amateur base station installations it is recom-
mended that the forwards clearance in front of the an-
tenna array is calculated relative to the EIRP (Effective
Isotropic Radiated Power). The clearance height below
the antenna array can be determined in most cases
from the RF power at the antenna input terminals.
As different exposure limits have been recommended
for different frequencies, a relative table shows a
guideline for installation considerations.
Below 30...