Icom IC-910H User Manual
INSTRUCTION MANUAL
VHF/UHF
ALL MODE TRANSCEIVER
i910H
IMPORTANT
WORD
R
WARNING
CAUTION
NOTE
DEFINITION
Personal injury, fire hazard or electric
shock may occur.
If disregarded, inconvenience only.
No risk of personal injury, fire or
electric shock.
Equipment damage may occur.
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
transceiver.
SAVE THIS INSTRUCTION MANUAL. This
manual contains important safety and operating instructions for the IC-910H.
PRECAUTIONS
EXPLICIT DEFINITIONS
R WARNING HIGH VOLTAGE! NEVER at-
tach an antenna or internal antenna connector during
transmission. This may result in an electrical shock or
burn.
R NEVER apply AC to the [DC13.8V] jack on the
transceiver rear panel. This could cause a fire or ruin
the transceiver.
R NEVER apply more than 16 V DC, such as a 24 V
battery, to the [DC13.8V] jack on the transceiver rear
panel. This could cause a fire or ruin the transceiver.
R NEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the
transceiver. This may result in an electric shock.
R NEVER expose the transceiver to rain, snow or
any liquids.
AVOID using or placing the transceiver in areas with
temperatures below –10°C (+14°F) or above +60°C
(+140°F). Be aware that temperatures on a vehicle’s
dashboard can exceed 80°C (+176°F), resulting in permanent damage to the transceiver if left there for extended periods.
AVOID placing the transceiver in excessively dusty environments or in direct sunlight.
AVOID placing the transceiver against walls or putting
anything on top of the transceiver. This will obstruct
heat dissipation.
Place unit in a secure place to avoid inadvertent use
by children.
During mobile operation, DO NOT operate the transceiver without running the vehicle’s engine. When the
transceiver power is ON and your vehicle’s engine is
OFF, the vehicle’s battery will soon become exhausted.
Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the
transceiver by ignition voltage spikes.
During maritime mobile operation, keep the transceiver
and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications.
BE CAREFUL! The heatsink will become hot when
operating the transceiver continuously for long periods.
BE CAREFUL! If a linear amplifier is connected, set
the transceiver’s RF output power to less than the linear amplifier’s maximum input level, otherwise, the linear amplifier will be damaged.
Use Icom microphones only (supplied or optional).
Other manufacturer’s microphones have different pin
assignments, and connection to the IC-910H may
damage the transceiver.
i
TABLE OF CONTENTS
qwe
r
1
IMPORTANT ........................................ i
EXPLICIT DEFINITIONS ..................... i
PRECAUTIONS ................................... i
1 TABLE OF CONTENTS ................ 1
2 PANEL DESCRIPTION ........... 2 –13
■ Front panel ..................................... 2
■ Function display ........................... 10
■ Rear panel .................................... 12
3 INSTALLATION AND
CONNECTIONS ................... 14 – 17
■ Unpacking .................................... 14
■ Grounding ..................................... 14
■ Selecting a location ...................... 14
■ Antenna connection ...................... 14
■ Required connections ................... 15
■ Advanced connections ................. 16
■ Power supply connections ............ 17
4 BASIC OPERATION ............. 18 – 25
■ Initial settings ................................ 18
■ When first applying power
(CPU resetting) ............................. 18
■ MAIN and SUB bands .................. 19
■ Operating band selection ............. 20
■ VFO description ............................ 21
■ Frequency setting ......................... 22
■ SUB band OFF ............................. 24
■ SUB tuning dial ............................. 24
■ Dial lock function .......................... 25
5 RECEIVE AND TRANSMIT .. 26 –39
■ Functions for receive .................... 26
■ RIT function .................................. 27
■ IF shift function ............................. 27
■ AGC time constant ....................... 28
■ AFC function ................................. 28
■ FM center indicator ....................... 28
■ Attenuator ..................................... 29
■ Simple band scope ....................... 29
■ Noise blanker ............................... 30
■ Tone squelch operation ................ 30
■ Optional DSP functions ................ 31
■ Functions for transmit ................... 32
■ Transmit via microphone .............. 32
■ Indications during transmit ........... 32
■ FM mode operation ...................... 33
■ VOX operation .............................. 33
■ Repeater operation ....................... 34
■ SSB mode operation .................... 36
■ Speech compressor ..................... 36
■ Split frequency operation .............. 37
■ Full duplex operation .................... 37
■ Connections for CW ..................... 38
■ CW mode operation ..................... 38
6 MEMORY OPERATION ........ 40 – 44
■ Memory channels ......................... 40
■ Operation on a memory channel .. 40
■ Programming in VFO mode .......... 41
■ Programming in memory mode .... 41
■ Blank channels ............................. 42
■ Frequency transferring ................. 42
■ Memory clearing ........................... 43
■ Call channels ................................ 43
■ Memo pads ................................... 44
7 SCANS ................................. 45 – 47
■ Scan types .................................... 45
■ Preparation ................................... 45
■ Programmed scan operation ........ 46
■ Memory scan operation ................ 46
■ Memory select scan ..................... 47
■ Tone scan ..................................... 47
8 SATELLITE OPERATION ..... 48–51
■ Satellite communications outline .. 48
■ Satellite notes ............................... 48
■ Entering into the satellite mode .... 48
■ Setting the satellite VFO ............... 49
■ Tracking selection ......................... 49
■ Preparation ................................... 50
■ Satellite operation ......................... 51
■ Satellite memory ........................... 51
9 DATA COMMUNICATION ..... 52 –54
■ Functions for AFSK ...................... 52
■ Connections for AFSK .................. 52
■ Operating mode notes .................. 53
■ Operating frequency notes ........... 53
■ AFSK operation ............................ 53
■ Setting the ACC socket ................ 54
10 SET MODE ........................... 55 –69
■ Set mode description .................... 55
■ General set mode ......................... 56
■ FM set mode ................................ 60
■ SSB/CW set mode ....................... 62
■ Scan set mode ............................. 64
■ Memo pad set mode ..................... 64
■ Compressor set mode .................. 64
■ VOX set mode .............................. 65
■ Attenuator set mode ..................... 65
■ Transmit set mode ........................ 66
■ NR set mode ................................ 67
■ SWP set mode ............................. 67
■ RIT/SHIFT set mode .................... 68
■ Speech set mode ......................... 69
11 OPTION INSTALLATIONS ... 70 –76
■ Internal view ................................. 70
■ Opening the transceiver’s case .... 71
■ UT-102 VOICE SYNTHESIZER
.............................................. 71
UNIT
■ UT-106 DSP UNIT .......................... 72
■ UX-910 1200 MHz BAND UNIT ........ 73
■ CR-293 HIGH STABILITY CRYSTAL
.............................................. 74
UNIT
■ FL-132/FL-133 CW NARROW
........................................... 75
FILTER
12 MAINTENANCE ................... 76 – 77
■ Troubleshooting ............................ 76
■ Fuse replacement ......................... 77
■ CPU resetting ............................... 77
13 CONTROL COMMAND ........ 78 –79
■ Remote jack (CI-V) information .... 78
14 SPECIFICATIONS ....................... 80
15 OPTIONS ..................................... 81
16 INSTALLATION NOTES ....... 82– 83
SUPPLIED ACCESSORIES
The transceiver comes with the following accessories.
Qty.
q DC power cable (OPC-657A) ............................ 1
w Hand microphone (HM-12) ................................ 1
e Spare fuses (FGB 30 A) .................................... 2
r Spare fuse (FGB 4 A) ........................................ 1
1
RF PWR
IncreasesDecreases
MIC GAIN
Recommended level for
an Icom microphone
IncreasesDecreases
2
q
o
!0
!1 !2
!3
w
e
r
t
y
u
i
PANEL DESCRIPTION
■ Front panel
q POWER SWITCH [POWER]
➥ Push momentarily to turn power ON.
➥ Push for 2 sec. to turn power OFF.
w TRANSMIT SWITCH [TRANSMIT]
Push to select transmitting or receiving.
e COMPRESSION SWITCH [COMP] (p. 36)
Push to switch the speech compressor function ON
and OFF.
• The speech compressor increases average RF output
2
power, improving signal strength and readability in SSB.
r VOX SWITCH [VOX] (p. 33)
Push to switch the VOX function ON and OFF.
• The VOX (Voice-Operated Transmission) function toggles between transmit and receive with your voice. This
function provides an opportunity to input log entries into
your computer, etc., while operating.
t HEADPHONE JACK [PHONES]
Accepts headphones.
• Output power: 5 mW with 8–16 Ω load.
• When headphones are connected, the internal speaker
or connected external speaker does not function.
• The MAIN and SUB band audio can be mixed or separated when using stereo headphones according to set
mode settings. (p. 57)
y MICROPHONE CONNECTOR [MIC]
Accepts the supplied or optional microphone.
•See p. 81 for appropriate microphones.
•See p. 15 for microphone connector information.
u MIC GAIN CONTROL [MIC GAIN]
Adjusts microphone input gain.
✔
How to set the microphone gain.
Set the [MIC] control so that the [MAIN]/[SUB] indicator (ALC
indicator) some times lights brighter during normal voice
transmission in SSB mode.
i RF POWER CONTROL [RF PWR]
Continuously varies the RF output power from minimum to maximum.
144 MHz band 5–100 W
430(440) MHz band 5–75 W
1200 MHz band 1–10 W (optional UX-910)
AF RF/SQL
No audio output
Max. audio output
Decreases Increases
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
Shallow Deep
Noise squelch
Minimum RF gain
Adjustable
range
Maximum
RF gain
Recommended level
RF gain
adjustable
range (SSB,
CW modes)
Maximum
RF gain
S-meter
squelch
Noise squelch (FM mode)
Squelch is
open.
MODE
SSB, CW
FM
AUTO
RF GAIN
SQL
SQL
SET MODE SETTING
SQL
SQL
RF GAIN + SQL
RF GAIN + SQL
SQL
PANEL DESCRIPTION
2
o MAIN BAND INDICATOR [MAIN]
➥ Lights green while the squelch is opened or a sig-
nal is received on the MAIN band; lights red while
transmitting on the MAIN band.
•While transmitting, the indicator also shows ALC condition. Brightness increases more than usual when
the ALC function is activated.
➥ Flashes when an off-frequency signal is received
and the FM center detector is activated. (p. 28)
!0 RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level for
the MAIN band. The squelch removes noise output
from the speaker (closed condition) when no signal
is received.
•The squelch is particularly effective for FM. It is also
available for other modes.
•12 to 13 o’clock position is recommended for any setting
of the [RF/SQL] control.
•The squelch threshold position for SSB/CW mode can
be set from 12 or 13 o’clock position in SSB/CW set
mode. (p. 62)
•The control can be set as ‘Auto’ (RF gain control in SSB
and CW; squelch control in FM) or squelch control (RF
gain is fixed at maximum) in set mode as follows. (p. 56)
•When functioning as squelch control
(RF gain is fixed at maximum.)
!1 AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker for
the MAIN band.
!2 SUB BAND INDICATOR [SUB]
Lights green while the squelch is opened or a signal
is received on the SUB band; lights red while transmitting in satellite operation.
• When setting as RF gain/squelch control
•When functioning as RF gain control
(Squelch is fixed open; SSB, CW only)
!3 RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level for
the SUB band. The squelch removes noise output
from the speaker (closed condition) when no signal
is received.
3
2
For 1 sec.
For 1 sec.
For 1 sec.
!4
!5
!6
!7
!8
!9
@0
@1
@2
@3
PANEL DESCRIPTION
■ Front panel
(continued)
!4 AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker for
the SUB band.
!5 SET•MENU SWITCH [SET•MENU] (p. 55)
➥ Push this switch then one of [FM],
[SSB/CW], [RIT], [SCAN], [NR], [TRANSMIT], [COMP], [VOX], [ATT], [SWP],
[MPW] or [SPCH] to enter the independent item set mode.
➥ Push for 1 sec. to enter the set mode for
commonly used item settings.
!6 ATTENUATOR•PRE-AMP SWITCH [ATT•P.AMP]
➥ Push to switch the attenuator function
ON and OFF. (p. 29) Use this function to
protect from signal distortion from excessively strong signals.
•The attenuation level is independently adjustable for 144 MHz or 430(440) MHz band
in the ATT set mode. The optional 1200 MHz
band attenuation level is fixed and is approx.
20 dB. (p. 65)
➥ Push for 1 sec. to switch the connected
pre-amplifier ON and OFF, when an optional pre-amplifier unit, AG-25, AG-35
and/or AG-1200, is connected. (p. 16)
DO NOT connect any equipment, such as an SWR
or power meter between the transceiver and preamplifier. In such case, the preamplifier may not activate properly.
!7 AUTO FREQUENCY CONTROL/NOISE
BLANKER•NOISE REDUCTION SWITCH
[AFC/NB•NR]
➥ During FM/FM narrow mode operation,
push to switch the AFC (Automatic Frequency Control) function ON and OFF.
(p. 28)
•Automatically tunes the operating frequency,
when an off-frequency signal is received, in
100 kHz steps. This function also follows the
signal even if the frequency is shifted.
➥ During SSB or CW mode operation, push
to switch the noise blanker function ON
and OFF. (p. 30)
•Reduces pulse-type noise, such as ignition
noise from a vehicle.
➥ Push for 1 sec. to switch the noise re-
duction function ON and OFF when an
optional DSP unit, UT-106, is installed.
(p. 31)
•Reduces unwanted noise and pulls out the
desired signal only for clear readability.
4
PANEL DESCRIPTION
For 1 sec.
or
or
Brake adjustment screw
For 1 sec.
For 1 sec.
For 1 sec.
2
!8 AUTO GAIN CONTROL•AUTO NOTCH FILTER
SWITCH [AGC•ANF]
➥ Push to switch the time constant of the
automatic gain control to SLOW and
FAST for the MAIN band.* (p. 28)
•SLOW selection (“FAGC” disappears) during
SSB (USB or LSB) operation, FAST selection
(“FAGC” appears) during CW, data operation
and while tuning with fast tuning dial rotation
are recommended.
*The AGC time constant can be selected on the
MAIN band only. FAST selection is fixed on
the SUB band.
➥ Push for 1 sec. to switch the automatic
notch filter function ON and OFF when
the optional DSP unit, UT-106, is installed. (p. 31)
•Reduces interference signals such as beat,
RTTY or CW signals and the notch frequency
automatically follows the interfering signal.
!9 kHz/MHz•TUNING STEP SELECTION SWITCH
[kHz/MHz] (p. 22)
➥ Push to select tuning step for the tuning
dial or scanning from 1 kHz, 1 MHz step
and regular tuning step* in sequence
•“ZZ” appears above the 1 kHz or 1 MHz digit
when 1 kHz or 1 MHz tuning step is selected,
respectively.
*The regular tuning step is selected for each
operating mode as follows.
➥ Push for 1 sec. to enter the regular tun-
ing step selection mode.
•The tuning step can be selected for each operating mode independently.
•SSB/CW mode: 1, 10, 50 and 100 Hz step;
FM mode: 0.1, 5, 6.25, 10, 12.5, 20, 25 and
100 kHz step can be selected by rotating the
tuning dial.
@2 BRAKE ADJUSTMENT SCREW
Adjust the tension of the tuning dial.
•Rotate clockwise to increase the tension; counterclockwise to decrease the tension.
@3 MEMORY CHANNEL UP/DOWN SWITCHES
[YYUP]/[DOWNZZ] (p. 40)
➥ Push [Y UP] to change the memory
channel up; push [DOWN Z] to change
the memory channel down.
•Memory channel changes continuously while
holding either switch.
•Memory channels can be selected both in
VFO and memory modes.
@0 SPEECH•LOCK SWITCH [SPCH•LOCK]
➥ Announces the receiving signal strength
and/or selected readout frequency when
the optional UT-102 is installed. (pgs. 69,
71)
➥ Push for 1 sec. to switch the tuning dial
lock function ON and OFF to prevent accidental setting changes. (p. 25)
@1 TUNING DIAL
Changes the displayed frequency, selects set mode
items, etc.
5
2
For 1 sec.
For 1 sec.
For 1 sec.
RIT SHIFT
RIT SHIFT
RIT SHIFT
Center positionMax. counter-
clockwise position
Max. clockwise
position
@4
@5
@6
@8
@7
PANEL DESCRIPTION
■ Front panel
(continued)
@4 RIT CONTROL [RIT] (p. 27)
Shifts the receive frequency without changing the
transmit frequency for the MAIN band only while the
RIT function is activated.
• SSB/CW mode : ±1.0 kHz* in 10 Hz step
• FM mode : ±5.0 kHz* in 50 Hz step
*For 1200 MHz band; ±2.0 kHz and ±10.0 kHz, respec-
tively when the optional UX-910 is installed.
• By using the Sub dial function, the RIT control can be
used as the MAIN/SUB tuning dial or the SUB band IF
shift control. See page 24 for details.
@6 SATELLITE SWITCH [SATELLITE]
➥ Push to enter satellite mode (RX on
MAIN, TX on SUB band). Push again to
return to the condition before entering
into the satellite mode.
➥ Push to enter satellite mode using the
current operating frequencies when
pushing for 1 sec.
•To change the normal and reverse satellite
operations, push [F-INP/ENT] for 1 sec.
6
@5 IF SHIFT CONTROL [SHIFT]
Shifts the center frequency of the receiver’s IF
passband within 1.2 kHz range.
• By using the Sub dial function, the IF shift control can be
used as the MAIN/SUB tuning dial or the SUB band IF
shift control. See page 24 for details.
✔
What is the Sub dial function?
The [RIT] and [SHIFT] controls are used for RIT and IF shift
controls for the MAIN band by default. However, the Sub dial
function assigns these controls as the MAIN/SUB tuning dial
or the SUB band IF shift control. (p. 24, 68)
@7 RIT SWITCH [RIT] (p. 27)
➥ Push to switch the RIT control activity ON
and OFF.
•“RIT” indicator appears when the RIT func-
tion is in use.
➥ Push for 1 sec. to switch the Sub dial
function ON and OFF.
•“RIT” indicator flashes and the [RIT] and
[SHIFT] controllers acts as the controllers
specified in the RIT/SHIFT set mode. (p. 68)
@8 KEYPAD
Numeral and other function keys for tuning and activating functions.
See the table at right.
PANEL DESCRIPTION
Switch Switch action when pushed Switch action when pushed for 1 sec.
•Enters numeral “1” when entering an operating
frequency. (p. 23)
•Switches between VFO and memory mode.
(p. 40)
2
Enters numeral “2” when entering an operating
frequency. (p. 23)
•Enters numeral “3” when entering an operating
frequency. (p. 23)
•Switches between VFO A and B during VFO
mode operation. (p. 21)
Enters numeral “4” when entering an operating
frequency. (p. 23)
Enters numeral “5” when entering an operating
frequency. (p. 23)
Enters numeral “6” when entering an operating
frequency. (p. 23)
Enters numeral “7” when entering an operating
frequency. (p. 23)
•Enters numeral “8” when entering an operating
frequency. (p. 23)
•Stores the displayed operating conditions into
MEMO PAD channel (p. 44)
•Enters numeral “9” when entering an operating
frequency. (p. 23)
•Re-calls the contents in the MEMO PAD channel.
(p. 44)
Equalizes the condition of the VFO A and B.
(p. 21)
Shows 10 Hz and 1 Hz digits of operating frequency on both the MAIN and SUB bands while
pushing and holding. (p. 22)
Stores the set conditions into a memory channel.
(p. 41)
Clears stored contents of memory channel to be
a blank channel. (p. 43)
Transfers the contents of a memory channel into
either the VFO A or B. (p. 42)
Opens squelch for monitoring the operating or
transmit frequency, and the frequency indication
automatically changes to transmit frequency in the
case of duplex or split operation. (p. 34)
•Enters decimal point “.” for entering below the
“MHz“ digits when entering an operating fre-
quency.
• Starts and cancels scanning function. (p. 46)
•Turns OFF the SUB band frequency indication
during satellite operation. In this case, only the
MAIN band frequency can be tuned by rotating
the tuning dial. (p. 49)
•Enters numeral “0” when entering an operating
frequency. (p. 23)
•Switches sweep function for the bandscope ON
and OFF. (p. 29)
•Turns OFF the MAIN band frequency indication
during satellite operation. In this case, only the
SUB band frequency can be tuned by rotating
the tuning dial. (p. 49)
Enables operating frequency entering from the
keypad. See page 23 for details.
Starts and cancels tone scan when the repeater
tone or tone squelch is activated in FM (narrow)
operation. (p. 47)
Used to change memory channel during memory
mode operation by rotating the tuning dial while
pushing and holding. (p. 40)
7
2
For 1 sec.
For 1 sec.
For 1 sec.
For 1 sec.
#5
#4
#3
#2
#1
#0
@9
PANEL DESCRIPTION
■ Front panel
(continued)
@9 SPLIT•DUPLEX SWITCH [SPLIT•DUP]
➥ Push to turn the split function, with the
VFO A and B, ON and OFF. (p. 37)
•The split operation is not available for the
SUB band.
➥ Push for 1 sec. to select the duplex (re-
peater) direction or to turn the function
OFF. (p. 34)
•The duplex operation is not available for the
SUB band.
#2 TONE SWITCH [TONE] (p. 34)
➥ Push to turn the tone encoder function
ON and OFF in FM mode. (except Europe, Sweden and Italy versions)
•“T” indicator appears in the display when the
tone encoder is activated.
➥ Push to transmit a 1750 Hz repeater tone
in FM mode for European, Sweden and
Italy versions.
Available repeater tones (Unit: Hz)
254.1
210.7
186.2
165.5
136.5
107.2
085.4
67.0
69.3
71.9
74.4
77.0
79.7
82.5
088.5
091.5
094.8
097.4
100.0
103.5
110.9
114.8
118.8
123.0
127.3
131.8
141.3
146.2
151.4
156.7
159.8
162.2
167.9
171.3
173.8
177.3
179.9
183.5
189.9
192.8
196.6
199.5
203.5
206.5
218.1
225.7
229.1
233.6
241.8
250.3
#0 SSB/CW•CW-NARROW SWITCH
[SSB/CW•CW-N]
➥ Push to switch the operating mode be-
tween SSB and CW. (p. 23)
➥ Push for 1 sec. to switch the operating
mode between USB and LSB or between
CW and CW narrow during SSB or CW
mode, respectively.
#3 MAIN/SUB CHANGE•BAND SWITCH
[M/S•BAND]
➥ Push to replace the MAIN band’s fre-
#1 FM•FM-NARROW SWITCH [FM•FM-N] (p. 23)
➥ Push to switch the operating mode be-
quency and mode with the SUB band’s.
(p. 19)
tween FM and FM repeater mode.
•The duplex operation can be made in MAIN
band only, it cannot be operated in SUB
band.
➥ Push for 1 sec. to switch the operating
mode between FM and FM-N (FM nar-
➥ Push for 1 sec. to change the operating
band during single band operation or
when the optional band unit, UX-910, is
installed. (p. 20)
row).
•The FM-N mode cannot be selected in
1200 MHz band operation.
8
#4 SUB•SUB OFF SWITCH [SUB•SUB OFF]
For 1 sec.
For 1 sec.
➥ Push to enable the SUB band control
from the tuning dial, keypad, etc. (p. 19)
•“SUB” indicator appears.
➥ Push for 1 sec. to turn the SUB band
readout indication ON and OFF. (p. 24)
#5 CALL•TONE SQUELCH SWITCH [CALL•T-SQL]
➥ Push to select the call channel of the op-
erating band. The call channel can be selected from both the VFO and memory
mode operation. (p. 43)
➥ Push for 1 sec. to turn the tone squelch
function ON and OFF during FM mode
operation. (p. 30)
•“T-SQL” indicator appears when the tone
squelch is activated.
PANEL DESCRIPTION
2
9
2
VFOA
VF
O
B
MEMO
R
ITCW N
L
SB
USBNFM
SUB
NOR
SAT
L
RE
V
L
OC K
T-SQ
L
S13
5
7
9 20
40
60dB
AT T P.AMP.AMP
AFCAFCNBNB
FAGC NR ANF
BLANKNK
SWP
S
CAN
OVEROVER
MEMO
F
M
N
USBUSB LSB
C
W
N
RIT
SPLITSPLIT
VFO A
VFO B
SET
BLANK
T-S Q
L
A
TT P.A MP
AFCAFC
N
B
F
AGCAGC
N
R
ANFANF
9600
COMPMP
SWP
60dB
VOX
S
CAN
OVER
S
1
3 5
7
9
20
40
DUP
q
q
w
w
e
e
r
t
y
y
u
u
i
i
o
o
!0
!0
!1
!2
!3!4
!5
!5
!6
!6
!7
!7
!8
!8
!9
!9
@0
@0
@1
@1
@2
@2
@3
@3
@5
@6
@7
@8
@4
@4
PANEL DESCRIPTION
■ Function display
10
q FREQUENCY READOUTS (p. 22)
Shows the operating frequency.
• Setting item name is indicated during set mode. (p. 55)
w MODE INDICATOR (p. 23)
Shows the selected operation mode.
e TUNING STEP INDICATOR (p. 22)
Appears when the 1 kHz or 1 MHz tuning step is selected.
r DUPLEX INDICATOR (p. 34)
Either “DUP–” or “DUP+” appears during duplex (repeater) operation.
t SPLIT INDICATOR (p. 37)
Appears during split operation.
y RIT INDICATOR (p. 27)
➥ Appears while the RIT function is activated.
➥ Flashes while the SUB dial function is activated.
u VFO INDICATOR (p. 21)
Either VFO A or VFO B appears during VFO operation.
i MEMORY MODE INDICATORS/MEMORY
CHANNEL NUMBER READOUTS (p. 40)
The memory mode indicator appears during memory mode operation and the memory channel number readout shows the selected memory channel
number during both the memory and VFO mode operation.
✔
In addition to the memory channel number indication, the
memory channel number readout indicates 10 Hz and 1 Hz
digits of operating frequency while rotating the tuning dial in
SSB or CW mode with 10 or 1 Hz tuning step. After 2 sec.
from tuning dial operation, the readout indicates the memory
channel number.
Memory channel number readout
o AUTO NOTCH FILTER INDICATOR (p. 31)
Appears when the optional DSP unit, UT-106, is installed, and the ANF (Automatic Notch Filter) function is activated.
!0 BLANK INDICATOR (p. 42)
not been programmed or has been cleared.
Appears when the selected memory channel has
PANEL DESCRIPTION
2
!1 DATA TRANSMISSION SPEED INDICATOR
(p. 52)
Appears when 9600 bps speed is selected for
packet transmission.
!2 SPEECH COMPRESSOR INDICATOR (p. 36)
Appears when the speech compressor is activated.
!3 SET INDICATOR (p. 55)
Appears when [SET] is pushed.
Disappears after any switch is pushed.
!4 VOX INDICATOR (p. 33)
Appears when the VOX function is activated.
!5 SWEEP INDICATOR (p. 29)
Flashes while the simple bandscope function is activated.
!6 SCAN INDICATOR (p. 46)
Flashes while scanning.
!7 NOISE REDUCTION INDICATOR (p. 31)
Appears when the optional DSP unit, UT-106, is installed and the noise reduction is activated.
@4 TONE SQUELCH INDICATOR (pgs. 30, 34)
“T” appears when the tone encoder function is activated; “T-SQL” appears when the tone squelch
function is activated.
@5 SUB INDICATOR (p. 19)
Appears when the SUB band access is enabled.
@6 SATELLITE INDICATOR (p. 49)
Appears while satellite operation mode is selected.
SATL
• - : Satellite operation with normal mode
NOR
is selected.
SATL
• - : Satellite operation with reverse mode
REV
is selected.
@7 REMOTE INDICATOR (p. 78)
Appears when the transceiver is controlled remotely
via the optional CI-V level converter, CT-17.
@8 LOCK INDICATOR (p. 25)
Appears when the dial lock function is activated.
!8 AGC TIME CONSTANT INDICATOR (p. 28)
Appears when the FAST AGC time constant is selected; disappears when the SLOW AGC time constant is selected.
!9 NOISE BLANKER INDICATOR (p. 30)
Appears when the noise blanker function is activated.
@0 AUTO FREQUENCY CONTROL INDICATOR
(p. 28)
Appears when the AFC (Automatic Frequency Control) function is activated.
@1 PRE-AMP INDICATOR (p. 16)
Appears when the optional pre-amplifier unit,
AG-25, AG-35 and/or AG-1200, is connected and
the pre-amplifier function is activated.
@2 ATTENUATOR INDICATOR (p. 29)
Appears when the attenuator is activated.
@3 MULTI-FUNCTION BAR METER
➥ Shows the receiving signal strength as an S-
meter while receiving. Peak hold function is available and can be switched ON and OFF in regular
set mode. (pgs. 26, 56)
➥ Shows the relative transmit output power level as
an RF power indicator during transmit. (p. 32)
➥ Shows signal availability in the sweeping band,
and the “▼” indicator indicates the center of the
sweeping frequency band.
11
2
(dot)
(com)
(dash)
(+)
(_)
Rear panel
view
+_
o
!2
w
e
r
t
y
u
i
q
!0
!1
PANEL DESCRIPTION
■ Rear panel
12
q 430(440) MHz ANTENNA CONNECTOR (p. 15)
Accepts a 50 Ω antenna with a type-N connector.
w DC POWER SOCKET [DC 13.8V] (p. 17)
Accepts 13.8 V DC through the supplied DC power
cable (OPC-657A).
e 144 MHz ANTENNA CONNECTOR (p. 15)
Accept a 50 Ω antenna with a PL-259 connector.
r SUB BAND EXTERNAL SPEAKER JACK
[SP (SUB)]
t MAIN BAND EXTERNAL SPEAKER JACK
[SP (MAIN)] (p. 16)
Accepts a 4–8 Ω speaker.
By connecting an external speaker for each or both
jacks, the audio for both the MAIN and SUB bands
is output as follows.
MAIN AF SUB AF
No Int. SP Int. SP
SP (MAIN) Ext. SP Ext. SP
SP (SUB) Int. SP Ext. SP
Both Ext. SP (MAIN) Ext. SP (SUB)
y 1200 MHz ANTENNA CONNECTOR (p. 15)
Available when the optional 1200 MHz band unit is
installed. Accepts a 50 Ω antenna with a type-N
connector.
u KEY JACK [KEY] (p. 15)
Accepts a paddle, a straight key or external electronic keyer with 1⁄8 inch standard plug.
i SUB BAND DATA SOCKET [DATA (SUB)]
o MAIN BAND DATA SOCKET [DATA (MAIN)]
(p. 13)
6-pin mini plug DIN jack to connect a TNC, etc. for
high speed data communications.
Simultaneous data communications are provided by
equipping independent data sockets for both MAIN
and SUB bands.
!0 ACCESSORY SOCKET [ACC(1)]
Enables connection of external equipment such as
a TNC for data communications, etc.
• See the right table for socket information.
!1 CI-V REMOTE CONTROL JACK [REMOTE]
(p. 78)
Designed for use with a personal computer via the
optional CT-17 for remote control of transceiver
functions.
!2 GROUND TERMINAL [GND] (p 14)
Connect this terminal to a ground to prevent electrical shocks and other problems.
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
q
w
e
y
t
r
q
w
e
y
t
r
D ACC SOCKETS
ACC(1) Socket Pin No. Pin Name Description Specification
1
NC
No connection.
2
2
3
4
5
GND
SEND
MOD
AF
Connect to ground.
Input terminal to transmit the transceiver in relation to the external equipment. (Grounded: transmits)
Input terminal for the modulation circuit.
Output terminal for AF signals from
the AF detector circuit. Output level is
Transmit voltage : –0.5 to +0.8 V
Output current : Less than 20 mA
Input current (Tx) : Less than 200 mA
Output impedance : 10 kΩ
Input level : 100 mV rms
Output impedance : 4.7 kΩ
Output level : 100–300 mV rms
fixed, regardless of [AF] control.
Output terminal for squelch condition
6
SQLS
(Open/Close). Outputs grounded level
Squelch open : Less than 0.3 V/5 mA
Squelch close : More than 6.0 V/100 µA
signal when squelch is opened.
7
13.8 V
Output terminal for 13.8 V DC, in re-
Output current : Less than 1 A
lation to the [POWER].
8
ALC
Input terminal for ALC control.
Input impedance : More than 10 kΩ
Control voltage : –4 to 0 V
D DATA SOCKETS
o MAIN BAND DATA SOCKET
DATA Socket Pin No. Pin Name Description
1
2
3
4
5
6
i SUB BAND DATA SOCKET
DATA Socket Pin No. Pin Name Description
1
2
3
4
5
6
DATA IN
GND
PTTP
DATA
OUT
AF OUT
SQL
DATA IN
GND
NC
DATA
OUT
AF OUT
SQL
Input terminal for data (common for both 1200 and 9600 bps)
Ground line for the DATA IN, DATA OUT and AF OUT.
Transmits when this terminal is grounded.
Received data output terminal for 9600 bps operation.
Received data output terminal for 1200 bps operation.
Output terminal for squelch condition (Open/Close). Outputs grounded level signal
when squelch is opened, +8 V level signal when squelch is closed.
Input terminal for data (common for both 1200 and 9600 bps)
Ground line for the DATA IN, DATA OUT and AF OUT.
No connection.
Received data output terminal for 9600 bps operation.
Received data output terminal for 1200 bps operation.
Output terminal for squelch condition (Open/Close). Outputs grounded level signal
when squelch is opened, +8 V level signal when squelch is closed.
13
3
INSTALLATION AND CONNECTIONS
■ Unpacking
After unpacking, immediately report any damage to the
delivering carrier or dealer. Keep the shipping cartons.
For a description and a diagram of accessory equipment included with the IC-910H, see ‘Supplied accessories’ on p. 1 of this manual.
■ Grounding
To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other problems, ground the transceiver through the GROUND
terminal on the rear panel.
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance between the [GND] terminal and ground as short as possible.
R WARNING: NEVER connect the [GND]
terminal to a gas or electric pipe, since the connection could cause an explosion or electric shock.
■ Selecting a location
Select a location for the transceiver that allows adequate air circulation, free from extreme heat, cold, or
vibrations, and away from TV sets, TV antenna elements, radios and other electro-magnetic sources.
The base of the transceiver has an adjustable stand for desktop use. Set the stand
to depending on your
operating conditions.
■ Antenna connection
For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select antenna(s), such as a well-matched 50 Ω antenna,
and feedline. 1.5:1 or better of Voltage Standing Wave
Ratio (VSWR) is recommended for your desired band.
Of course, the transmission line should be a coaxial
cable.
CAUTION: Protect your transceiver from lightning
by using a lightning arrestor.
PL-259 CONNECTOR INSTALLATION EXAMPLE TYPE-N CONNECTOR INSTALLATION EXAMPLE
q
Coupling ring
w
e
r
30 mm
10 mm (soft solder)
10 mm
Soft
solder
1–2 mm
solder solder
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Strip the cable as shown at
left. Soft solder the center
conductor.
Slide the connector body
on and solder it.
Screw the coupling ring
onto the connector body.
q
w
e
r
Nut Rubber gasket
Washer
Clamp
Be sure the center conductor is
the same height as the plug body.
3 mm
15 mm
Center
conductor
6 mm
Solder hole
No space
Slide the nut, rubber
gasket and clamp over the
coaxial cable, then cut the
end of the cable evenly.
Strip the cable and fold the
braid back over the clamp.
Soft solder the center
conductor. Install the
center conductor pin and
solder it.
Carefully slide the plug
body into place aligning the
center conductor pin on the
cable. Tighten the nut onto
the plug body.
14
30 mm ≈9⁄8 in 10 mm ≈3⁄8 in 1–2 mm ≈1⁄16 in
DC POWER SUPPLY (p. 17)
[430(440)MHz ANT]
(p. 14)
[1200MHz ANT] (p. 14)
[144MHz ANT] (p. 14)
[KEY] jack (p. 38)
GROUND (p. 14)
Required for optional
UX-910 operation.
+_
13.8 V DC
More than 25 A
(dot)
(com)
(dash)
+
_
SM-20 DESKTOP
MICROPHONE (optional)
MICROPHONE CONNECTOR (Front panel view)
Input impedance:
8–16 Ω
Audio output power:
5 mW with 8 Ω load
Output power may differ
according to the headphone
HM-12 HAND
MICROPHONE
HEADPHONES
q MIC (Microphone input)
w +8V (Max. 8 V DC 10 mA)
e MIC U/D (Frequency up/down)
r SQL S (Squelch switch)
t PTT
y GND (PTT ground)
u GND (Microphone ground)
i AF OUT (varies with [AF])
CAUTION: DO NOT short pin 2 to ground as this can damage the
internal 8 V regulator. DC voltage is applied to pin 1 for microphone
operation. Take care when using a non-Icom microphone.
q
w
e
r
t
y
u
i
■ Required connections
• Front panel
INSTALLATION AND CONNECTIONS
3
• Rear panel
15
3
MB-23 CARRYING HANDLE
PREAMP (p. 59)
(144 MHz/430(440) MHz/1200 MHz)
EXTERNAL SPEAKER
(MAIN/SUB) (p. 12)
CT-17
144 MHz : AG-25
430(440) MHz : AG-35
1200 MHz : AG-1200
External all-weather, mast
mounting preamplifiers are
available.
MAIN
MAIN
144 MHz430(440) MHz 1200 MHz (optional)
SUB
SUB
s
p
-
7
i
c
o
m
Use 4–8 Ω speakers.
[REMOTE] (p. 78)
Used for computer control and transceive
operation.
Used for external
equipment control.
ACC SOCKETS
(pgs. 13, 52)
DATA SOCKETS
(MAIN/SUB) (pgs. 13, 52)
CAUTION: NEVER
connect equipment
(i.e. power, SWR meter)
between transceiver
and preamplifier.
INSTALLATION AND CONNECTIONS
■ Advanced connections
• Front panel
• Rear panel
16
AC outlet
AC cable
13.8 V DC 25 A
A DC power supply
Black_Red
+
IC-910H
Supplied DC
power cable
INSTALLATION AND CONNECTIONS
24V
Ciga
IC-910H
12 V
battery
Supplied
DC power cable
+ red
_ black
Crimp
Solder
Grommet
3
■ Power supply connections
Use an optional DC power supply with a 25 A capacity
and above when operating the transceiver with AC
power. Refer to the diagrams below.
CONNECTING A DC POWER SUPPLY
CAUTION: Before connecting the DC power
cable, check the following important items. Make
sure:
• The [POWER] switch is OFF.
•Output voltage of the power source is 12–15 V
when you use a non-Icom power supply.
• DC power cable polarity is correct.
Red : positive + terminal
Black : negative _ terminal
CONNECTING A VEHICLE BATTERY
NEVER connect to
a 24 V battery.
NEVER use the cig-
arette lighter socket as
a power source.
NOTE: Use terminals for
the cable connections.
17
4
[POWER] [MW 4] [M-CL 5]
F
M
VFO A
VFVFOA
F
M
S13
579 2020
40
60dB60dB
60dB
S
1
3 5
7
9
20
40
[TRANSMIT]: OFF
[COMP]: OFF
[VOX]: OFF
[AF] (SUB band):
CCW
[RF/SQL]: (SUB band)
12 o’clock
[MIC]: CCW
[SET]: OFF
[ATT(P.AMP)]: OFF
[RF PWR]: CCW
[AFC/NB]: OFF
[AGC]: OFF
[RIT]: 12 o’clock
[SHIFT]: 12 o’clock
[RIT]: OFF
[POWER]: OFF
[AF] (MAIN band):
CCW
[RF/SQL] (MAIN band):
12 o’clock
[SATELLITE]: OFF
BASIC OPERATION
■ Initial settings
After resetting the transceiver, set controls and
switches as shown in the figure below.
Turn power ON, then check the display. If any of the
following indicators appear, turn them OFF as follows:
CCW : Max. counterclockwise
• Quick tuning step indicator “▼” : Push [kHz/MHz].
• RIT indicator “RIT” : Push [RIT].
• Split indicator “SPLIT” : Push [SPLIT].
■ When first applying power (CPU resetting)
Before first applying power, make sure all connections
required for your system are complete by referring to
Chapter 3. Then, reset the transceiver using the following procedure.
q Make sure the transceiver power is OFF.
w While pushing [MW 4] and [M-CL 5], push
[POWER] to turn power ON.
• The internal CPU is reset.
• The transceiver displays its initial VFO frequencies when
resetting is complete.
18
Resetting CLEARS all programmed contents in
memory channels and returns programmed values
in set mode to default values.
■ MAIN and SUB bands
F
M
VFO A
VFVFOA
F
M
S13
579 2020
40
60dB60dB
60dB
S
1
3 5
7
9
20
40
MAIN band display
SUB band display
F
M
VFO A
VFVFOA
F
M
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
F
M
VFO A
VFVFOA
F
M
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
MAIN band display
SUB band display
F
M
VFO A
VFVFOA
F
M
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
F
M
VFO A
VFVFOA
F
M
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
SUB
The IC-910H has dual bands: 144 MHz and 430(440)
MHz. These bands can be assigned to the MAIN and
SUB bands for operating convenience.
Each MAIN and SUB bands have independent features.
The MAIN band is the operation for both transmit and
receive, and is displayed in the upper area of the function display. The SUB band is the operation for only receive, and is displayed in the lower area of the function
display.
Simultaneous receive on both the MAIN and SUB
bands is possible, however the transmission can
only be transmitted on the MAIN band— not on the
SUB band.
In the case of satellite operation mode, the SUB
band is used for the transmission band.
BASIC OPERATION
4
DD
Exchanging the MAIN and SUB bands
The function display shows both the MAIN and SUB
band frequencies and both bands can receive signals
simultaneously.
DD
Accessing the SUB band
Normally, any operations, such as tuning, operating
mode selection, memory channel selection and programming, etc., are performed on the MAIN band.
However, these operations can be performed on the
SUB band by using the SUB band access capability.
Assign 144 MHz or 430(440) MHz band, whichever
band you want to transmit or be called on, as the MAIN
band.
➥ Push [M/S] to exchange the MAIN and SUB bands.
➥ Push [SUB] to switch the SUB band access capa-
bility ON and OFF.
•“SUB” indicator appears while the SUB band access ca-
pability is activated.
•Even during SUB band access, transmission cannot be
made on the SUB band.
19
4
[SUB] [M/S•BAND]
F
M
VFO A
VFVFOA
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
Select 1200 MHz to MAIN band.
F
M
VFO A
VFVFOA
F
M
SUB
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
Select 1200 MHz to SUB band.
BASIC OPERATION
■ Operating band selection
(optional UX-910 is required)
The IC-910H can be used on the additional 1200 MHz
band with the optional UX-910. The operating band
can be selected by pushing [M/S•BAND] for 1 sec.
DD
Selecting on the MAIN band
q Push [SUB] to cancel the SUB band access, if re-
quired.
w Push [M/S•BAND] for 1 sec. to select operating
band.
NOTE: The same operating band cannot be assigned on both MAIN and SUB bands, simultaneously.
DD
Selecting on the SUB band
q Push [SUB] to enable the SUB band access.
•“SUB” indicator appears.
w Push [M/S•BAND] for 1 sec. to select operating
band.
20
■ VFO description
F
M
VFO A
F
M
VFO B
VFO selection
F
M
VFO A
F
M
VFO B
undisplayed VFO
Equalizes the undisplayed VFO condition
to the displayed VFO.
displayed VFO
The IC-910H has two VFOs for both bands, specially
suited for instant selection of 2 frequencies or split frequency operation. The VFOs are called VFO A and
VFO B. You can use the desired VFO to call up a frequency and operating mode for your operation.
VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator.
DD
Selecting the VFO A/B
➥ Push [A/B 3] to switch between the VFO A and
VFO B.
DD
VFO equalization
BASIC OPERATION
4
➥ Push [A=B 2] for 1 sec. to equalize the undisplayed
VFO condition to the displayed VFO.
•3 beeps sound when the VFO equalization is completed.
CONVENIENT
Use two VFOs as a quick memory
When you find a new station, but you wish to continue searching, the two VFO system can be used
for quick memory storage.
q Push [A=B 2] for 1 sec. to store the displayed fre-
quency into the undisplayed VFO.
w Continue searching for stations.
e Push [A/B 3] to retrieve the stored frequency.
r To continue searching for stations, push [A/B 3]
again.
21
4
USBUSB
VFO A
USBUSB
10 Hz/1 Hz indication
While tuning
[kHz/MHz•TS] for 1 sec.
F
M
USBUSB
(20 kHz tuning step)
(10 Hz tuning step)
FM mode tuning step set mode
SSB/CW mode tuning step set mode
[kHz/MHz•TS]
F
M
VFO A
1 kHz tuning step1 MHz tuning step
BASIC OPERATION
■ Frequency setting
The IC-910H has several tuning steps and a
[kHz/MHz] switch for convenient frequency tuning.
q Push [M/S] to select the desired frequency band as
the MAIN band; or push [SUB] to access the SUB
band.
w Rotate the tuning dial to select the frequency.
• The memory channel number changes to the 10 and
1 Hz digits when rotating the tuning dial with 1, 10,
100 Hz and 6.25 kHz tuning steps.
• When you want to check the 10 and 1 Hz digits during
memory channel number indication, push and hold [A/B]
(10 and 1 Hz digits are indicated while holding).
DD
Tuning step selection
Tuning steps can be pre-set independently for FM and
SSB/CW. The following steps are selectable.
• FM : 0.1, 5, 6.25, 10, 12.5, 20, 25 or 100 kHz
• SSB/CW : 1, 10, 50 or 100 Hz
q Push [M/S] to select the desired frequency band as
the MAIN band; or push [SUB] to access the SUB
band.
w Push [FM] or [SSB/CW] to select the desired oper-
ation mode.
e Push [kHz/MHz•TS] for 1 sec. to enter the tuning
step set mode.
r Rotate the tuning dial to select the desired tuning
step.
t Push [kHz/MHz•TS] to return to previous display.
DD
Quick tuning step
The operating frequency can be changed in 1 kHz
steps or 1 MHz steps for quick tuning.
➥ Push [kHz/MHz•TS] to switch the quick tuning step
in sequence 1 kHz, 1 MHz and OFF.
22
DD
keypad
[FM] [SSB/CW]
Frequency setting with the keypad
The operating frequency can be directly entered from
the keypad.
q Push [F-INP ENT] to access the keypad frequency
entry.
• All digits of frequency indication disappear.
w Push numeral keys to enter the desired operating
frequency.
• The entered number is indicated from the 100 Hz digit.
e Push [F-INP ENT] to set the frequency.
BASIC OPERATION
[EXAMPLE]
145.3400 MHz
[F-INP ENT] [1] [4] [5] [.] [3] [4] [F-INP]
435.0000 MHz
[F-INP ENT] [4] [3] [5] [.] [F-INP ENT]
439.1200 MHz
[F-INP ENT] [4] [3] [9] [.] [1] [2] [F-INP ENT]
439.1200 MHz to 439.2604 MHz
[F-INP ENT] [.] [2] [6] [0] [4] [F-INP ENT]
Pushing numeral keys to 100 Hz digit without pushing [.] also sets the desired operating frequency.
4
DD
Operating mode selection
SSB (USB/LSB), CW, CW-N (CW narrow), FM and
FM-N (FM narrow) modes are available in the
IC-910H. Select the desired operation mode as follows.
• Selecting SSB mode
➥ Push [SSB/CW] to select USB mode.
•USB mode is generally used for SSB phone operation
on the VHF and UHF bands.
•Push [SSB/CW] for 1 sec. after USB mode selection to
switch between USB and LSB mode.
• Selecting CW mode
➥ Push [SSB/CW] to select CW mode.
•Push [SSB/CW] for 1 sec. after CW mode selection to
switch between CW and CW narrow mode.
The optional CW narrow filter, FL-132 or FL-133, is
required for the MAIN or SUB bands, respectively.
In satellite operation, the optional FL-133 is necessary to operate CW narrow mode in the MAIN (receive) band. No audio is output until the optional
CW narrow filter is installed in the CW narrow mode.
•When the optional UT-102 voice synthesizer unit
is installed.
The UT-102 announces the selected mode in an electronically-generated voice when [SSB/CW] or [FM] is
pushed. (pgs. 69, 71)
• Selecting FM mode
➥ Push [FM] to select FM mode.
•Push [FM] after FM mode selection to turn the repeater
mode (duplex negative with repeater tone ON) ON and
OFF.
•Push [FM] for 1 sec. after FM mode selection to switch
between FM and FM narrow mode.
23
4
F
M
VFO A
60dB
S
1
3 5
7
9
20
40
SUB band indication OFF.
[SUB•SUB OFF] for 1 sec.
F
M
RITRIT
VFOA
VFOAVFOA
F
M
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
While [RIT] is flashing, SUB band can be
controlled with sub dial function.
Advances the
frequency and
increases the
speed.
Reverses the
frequency and
increases the
speed.
SUB dial
functions
slightly.
BASIC OPERATION
■ SUB band OFF
The SUB band indication can be deactivated to simplify operation.
➥ Push [SUB•SUB OFF] for 1 sec. to turn the SUB
band indication ON and OFF.
• Push [M/S•BAND] for 1 sec. to change the operating
band. (p. 20)
■ SUB tuning dial
The IC-910H has a large main tuning dial for frequency
setting. In addition, the [RIT] or [SHIFT] controls can
be used as a SUB tuning dial for dual band simultaneous tuning, etc. The SUB tuning dial changes the operating frequency continuously at a variable speed.
To use the SUB tuning dial function, assign the function to either the [RIT] or [SHIFT] control using the
RIT/SHIFT set mode.
DD
When the [RIT] control is assigned as
SUB tuning dial
q Push [RIT] for 1 sec.
•“RIT” indicator flashes when the SUB tuning dial func-
tion is activated.
w Rotate [RIT] control for the desired tuning direction
and speed.
• Tuning speed can be adjusted in ±5 steps.
e Set [RIT] control to the center position to stops tun-
ing.
• A beep tone sounds when [RIT] control is set to the center.
r Push [RIT] to cancel the SUB tuning dial function.
The assigned control can be used for its original
function, however, both functions cannot be used simultaneously.
24
DD
[SET] [DN ▼][▲ UP]
[RIT]
[RIT]
[SHIFT]
The [RIT] control functions as [RIT]
even when the SUB tuning dial
function is in use. (default)
The [RIT] control can be used for
MAIN band tuning.
The [RIT] control can be used for
SUB band tuning.
The [RIT] control can be used for
SUB band IF shift control.
The [SHIFT] control functions as
[SHIFT] even when the SUB tuning
dial function is in use. (default)
The [SHIFT] control can be used for
SUB band IF shift control.
The [SHIFT] control can be used for
MAIN band tuning.
The [SHIFT] control can be used for
SUB band tuning.
F
M
VFO A
VFVFOA
F
M
L
OC K
S 1 357
9 2020
4040
60dB60dB
60dB
S
1
3 5
7
9
20
40
LOCK indicatior
[SPCH•LOCK] for 1 sec.
SUB tuning dial assignment
q Push [SET] then [RIT] to enter the RIT/SHIFT set
mode.
w Push [DN ▼] or [▲ UP] to select [RIT] or [SHIFT]
control to be assigned.
•“rit nob” or “SFt nob” appears.
e Rotate the tuning dial to select the condition as de-
scribed below.
•Pushing [M-CL 5] for 1 sec. selects the default setting.
r Push [SET] to exit from the RIT/SHIFT set mode.
BASIC OPERATION
4
■ Dial lock function
The dial lock function prevents accidental changes
caused by the tuning dial (including the SUB tuning dial
function).
➥ Push [SPCH•LOCK] for 1 sec. to turn the dial lock
function ON and OFF.
•“LOCK” indicator appears while the dial lock function is
activated.
25
Loading...