When setting as RF gain control

(Squelch is xed open.)

Maximum RF gain Adjustable range Minimum RF gain
!3 NOISE REDUCTION SWITCH [NR] (p. 26) Toggles the noise reduction ON and OFF. Functions in SSB, CW and RTTY modes.

Noise reduction OFF

Noise reduction ON
When setting as squelch control
(RF gain is xed at maximum.)
Noise squelch (FM mode) Noise squelch threshold (FM mode) Squelch is open. S-meter squelch threshold S-meter squelch
!4 NOISE BLANKER SWITCH [NB] (p. 26) Toggles the noise blanker ON and OFF. The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function cannot be used for FM, or non-pulse-type noise.

Noise blanker OFF

Noise blanker ON
!5 S/RF METER (p. 34) Shows the signal strength while receiving. Shows the relative output power, SWR or ALC levels while transmitting. !6 MONITOR SWITCH [MONITOR] (p. 33) Monitors your transmitted IF signal.
- The CW sidetone functions when [MONITOR] is OFF in CW mode.

Shallow

o RF POWER CONTROL [RF POWER] Continuously varies the RF output power from minimum (2 W*) to maximum (100 W*).

* AM mode: 1 W to 40 W

RF POWER
!7 ANTENNA TUNER SWITCH [TUNER] (p. 39) Turns the antenna tuner ON and OFF (bypass) when pushed momentarily. Starts to tune the antenna manually when pushed for 2 sec.
- When the tuner cannot tune the antenna, the tuning circuit is bypassed automatically after 20 sec. 2

@9 @8 @7 @6 @5

TWIN PBT

3.14 5

APF AUTO NOTCH

DUAL WATCH

24.50 0

CHANGE

VFO/ MEMO

F-INP ENT

M-CL TS

MAIN/ SUB

CW PITCH
COMP KEY SPEED BK-IN DELAY

SPEECH LOCK

!8 MULTI-FUNCTION SWITCHES Push to select the functions indicated in the LCD display to the right of these switches.
- Functions vary depending on the operating condition.
Activates or selects fast, middle or slow AGC time constant when pushed.

AGC AGC MID

- The setting becomes fast in FM mode regardless of this setting.
Push to input a character for memory keyer programming or memory name. (pgs. 36, 45) Toggles the antenna connector selection between ANT1/R and ANT2/R when pushed. (p. 37) Toggles the receive antenna ON and OFF when pushed for 2 sec. Selects RF power (Po), SWR or ALC metering during transmit. (p. 34) Selects one of 2 receive RF preamps or bypasses them.

P.AMP OFF

Deactivates the AGC circuit when pushed for 2 sec. NOTE: While AGC OFF is selected, the S-meter does not function.

@9 SPLIT SWITCH [SPLIT] (p. 31) Turns the split function ON and OFF when pushed. Turns the split function ON, equalizes the sub readout frequency to the main readout and sets the sub readout for frequency input when pushed for 2 sec. in non-FM modes. (Quick split function)
- The offset frequency is shifted from the main readout frequency in FM mode. (pgs. 38, 57)
Turns the split function ON and shifts the sub readout frequency after inputting an offset ( 1 MHz in 1 kHz steps).

$5 $4 $3

#8 #7 #6 #5

#4 #3 #2

#0 LOCK SWITCH [LOCK] (p. 38) Turns the dial lock function ON and OFF. #1 RIT/TX CONTROL [RIT/TX] (p. 29) Shifts the receive and/or transmit frequency without changing the transmit and/or receive frequency while the RIT and/or TX functions are ON.
- Rotate the control clockwise to increase the frequency, or rotate the control counterclockwise to decrease the frequency. - The shift frequency range is 9.999 kHz in 1 Hz steps (or 9.99 kHz in 10 Hz steps).

RIT/TX

#3 TX SWITCH [TX] (p. 29) Turns the TX function ON and OFF when pushed.
- Use the [RIT/TX] control to vary the TX frequency.
Adds the TX shift frequency to the operating frequency when pushed for 2 sec.

What is the TX function?

The TX shifts the transmit frequency without shifting the receive frequency. This is useful for simple split frequency operation in CW, etc.

Low shift

High shift
#4 CLEAR SWITCH [CLEAR] (p. 29) Clears the RIT/TX shift frequency when pushed for 2 sec. #5 CW PITCH CONTROL [CW PITCH] (outer control; p. 27) Shifts the received CW audio pitch and monitored CW audio pitch without changing the operating frequency.

APF CW PITCH

#2 RIT SWITCH [RIT] (p. 29) Turns the RIT function ON and OFF when pushed.
- Use the [RIT/TX] control to vary the RIT frequency.
Adds the RIT shift frequency to the operating frequency when pushed for 2 sec.
What is the RIT function?
The RIT (Receiver Incremental Tuning) shifts the receive frequency without shifting the transmit frequency.

Lower frequency

Higher frequency

Approx. 300 Hz

Approx. 900 Hz
This is useful for ne tuning stations calling you on an offfrequency or when you prefer to listen to slightly differentsounding voice characteristics, etc.

#6 AUDIO PEAK FILTER CONTROL [APF] (inner control; p. 27) Varies the peak frequency of the audio peak lter to pick out a CW signal from interference while the APF function is ON.

Low cut

Center

High cut

#7 AUDIO PEAK FILTER SWITCH [APF] (p. 27) Turns the audio peak filter ON and OFF when pushed.
- The APF indicator appears in the LCD. - The audio peak lter functions in CW only.
$0 LOCK INDICATOR [LOCK] (p. 38) Lights when the dial lock function is activated. $1 MEMO PAD-READ SWITCH [MP-R] (p. 46) Each push calls up a frequency and operating mode in a memo pad. The 5 (or 10) most recently programmed frequencies and operating modes can be recalled, starting from the most recent.
- The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience. (p. 59)
Toggles the bandwidth of the audio peak lter between 320, 160 or 80 Hz when pushed for 2 sec.
- Use the [APF] control to vary the peak frequency.

APF APF

APF function OFF

APF function ON

#8 AUTO NOTCH SWITCH [AUTO NOTCH] (p. 26) Turns the auto notch function ON and OFF.
- The auto notch functions in SSB only.
$2 KEYPAD Pushing a key selects the operating band.
- [GENE] selects the general coverage band.
What is the notch function?
The notch function eliminates unwanted CW or AM carrier tones while preserving the desired signals audio response. The ltering frequency is adjusted to effectively eliminate unwanted tones via the DSP circuit.

AUTO NOTCH AUTO NOTCH

Pushing the same key 2 or 3 times calls up other stacked frequencies in the band. (p. 23)
- Icoms triple band stacking register memorizes 3 frequencies in each band.
After pushing [F-INPENT], enters a keyed frequency or memory channel. Pushing [F-INPENT] or [Y]/[Z] is necessary at the end. (pgs. 23, 41)
- e.g. to enter 14.195 MHz, push [F-INPENT] [1] [4] [] [1] [9] [5] [F-INPENT].

Auto notch OFF

Auto notch ON
#9 PASSBAND TUNING CONTROLS [TWIN PBT] Adjust the receivers passband width of the 455 kHz and 9 kHz IF lters for the inner and outer controls, respectively. (p. 25)
- Passband width and center frequency are displayed in the LCD. - Set to the center positions when not in use. - Variable range depends on the filter selection. 1.29 kHz in 15 Hz steps and 258 kHz in 3 Hz steps are available.
$3 MEMO PAD-WRITE SWITCH [MP-W] (p. 46) Programs the selected readout frequency and operating mode into a memo pad.
- The 5 most recent entries remain in memo pads. - The transmit frequency is programmed when pushed together with [XFC]. - The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience. (p. 59)

!0 DC POWER SOCKET [DC 13.8V] (p. 14) Accepts 13.8 V DC through the supplied DC power cable (OPC-025A).

Rear panel _ view

NOTE: If you use an external electronic keyer, make sure the voltage retained by the keyer is less than 0.4 V when the key is ON.
!1 ANTENNA CONNECTOR 1 [ANT1] !2 ANTENNA CONNECTOR 2 [ANT2] (pgs. 13, 14) Accept a 50 antenna with a PL-259 connector. NOTE: When using an optional AH-3 HF AUTOMATIC ANTENNA TUNER, connect it to the [ANT1] connector. The internal antenna tuner activates for [ANT2] and deactivates for [ANT1] when connecting the AH-3.
!3 GROUND TERMINAL [GND] (pgs. 13, 14) Connect this terminal to a ground to prevent electrical shocks, TVI, BCI and other problems.

D ACC SOCKETS

ACC(1) PIN NO. PIN NAME 1

2 RTTY GND

DESCRIPTION
Controls RTTY keying. Connects to ground. Input/output pin. Goes to ground when transmitting. When grounded, transmits. Modulator input. Connects to a modulator. AF detector output. Fixed, regardless of [AF] position. Squelch output. Goes to ground when squelch opens. 13.8 V output when power is ON.

SPECIFICATIONS

HIGH level LOW level Output current : More than 2.4 V : Less than 0.6 V : Less than 2 mA
Connected in parallel with ACC(2) pin 2. Ground level : 0.5 V to 0.8 V Output current : Less than 20 mA Input current (Tx) : Less than 200 mA Connected in parallel with ACC(2) pin 3. Input impedance Input level : 10 k : Approx. 100 mV rms

MOD AF

Rear panel view
Output impedance : 4.7 k Output level : 100 to 300 mV rms Squelch open Squelch closed : Less than 0.3 V/5 mA : More than 6.0 V/100 A

13.8 V

Output current : Max. 1 A Connected in parallel with ACC(2) pin 7. Control voltage : 4 to 0 V Input impedance : More than 10 k Connected in parallel with ACC(2) pin 5.

ALC voltage input.

ACC(2)

PIN NO. PIN NAME 1

2 8V GND SEND BAND ALC NC 13.8 V

Regulated 8 V output.

Output voltage Output current Same as ACC(1) pin 2. Same as ACC(1) pin 3. : 8 V 0.3 V : Less than 10 mA
Band voltage output. (Varies with amateur band)
Output voltage Same as ACC(1) pin 8. No connection. Same as ACC(1) pin 7.

: 0 to 8.0 V

INSTALLATION AND CONNECTIONS

s Antenna

For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select antenna(s), such as a well-matched 50 antenna, and feedline. 1.5:1 of Voltage Standing Wave Ratio (VSWR) is recommended for a desired band. Of course, the transmission line should be a coaxial cable. When using 1 antenna, use the [ANT1] connector.

s 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-756, see UNPACKING on p. ii of this manual.

MICROPHONES (p. 68)

Rear panel
ANTENNA 1, 2 (p. 13) [Example]: ANT1 for 1.818 MHz bands ANT2 for 2150 MHz bands DC POWER SUPPLY

GROUND (p. 13)

Use the heaviest gauge wire or strap available and make the connection as short as possible. Grounding prevents electrical shocks, TVI and other problems. STRAIGHT KEY

s Advanced connections

HEADPHONES
MIC The AFSK modulation signal can be input from [MIC]. (p. 19)
[REMOTE] (pgs. 20, 60) Used for computer control and transceive operation.
ANTENNA 1, 2 (pgs. 17, 18) Connects a linear amplifier, antenna selector, etc.

RX ANTENNA

ACC SOCKETS (p. 12) AH-3 (p. 18) EXTERNAL SPEAKER (p. 68)
[RELAY], [ALC] (p. 17) Used for connecting a non-Icom linear amplifier.
When using the AH-3, it must be connected to the [ANT1] connector.
s Power supply connections
Use an optional PS-85 DC POWER SUPPLY, etc. when operating the transceiver with AC power. Refer to the diagrams below.
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 1215 V when you use a non-Icom power supply. DC power cable polarity is correct. Red : positive + terminal Black : negative _ terminal
CONNECTING AN ICOM DC POWER SUPPLY

AC outlet

Transceiver PS-85

AC cable

to DC power socket
CONNECTING A NON-ICOM DC POWER SUPPLY
AC outlet Transceiver Non-Icom power supply
13.8 V 20 A Black Red _ +
Supplied DC power cable AC cable 20 A fuses
CONNECTING A VEHICLE BATTERY

NEVER connect

to a 24 V battery.

- black

Grommet

NOTE: Use terminals for

the cable connections. Crimp
Solder 12 V battery Supplied DC power cable 16
s Linear amplier connections

CONNECTING THE IC-4KL

Use the [ANT1] connector when connecting a linear amplier.

To an antenna

Coaxial cable (supplied with the IC-4KL)
ACC cable (supplied with the IC-4KL)

IC-4KL Remote controller

IC-4KL

Transceiver

Remote control cable
(supplied with the IC-4KL)

Ground

AC outlet (220240 V)
NOTE: Turn OFF the transceivers antenna tuner while tuning the IC-4KLs tuner. CONNECTING THE IC-2KL

s Remote jack (CI-V) information

CI-V connection example

The transceiver can be connected through an optional CT-17 CI-V LEVEL CONVERTER to a personal computer equipped with an RS-232C port. The Icom Communication Interface-V (CI-V) controls the following functions of the transceiver. Up to four Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 60 for setting the CI-V condition using set mode.

915 V DC

ct- 17

Personal computer

Data format
The CI-V system can be operated using the following data formats. Data formats differ according to command numbers. A data area or sub command is added for some commands.
CONTROLLER TO IC-756 FE FE 50 E0 Cn Sc Data area (e.g. fd) FD BCD code frequency or memory channel data Sub command number End of message code Preamble code (fixed)
(selectable in set mode) Operating mode

Command table

Description
Frequency setting LSB USB AM CW RTTY FM

Command

Sub command
Data*05 B0 B1 C0 C1 D0 D1 Mch no. (BCD)*2 or or 0101
Controllers address Command number

IC-756s address

(See table)

(see table)

VFO mode selection MAIN SUB MAIN = SUB Dualwatch OFF Dualwatch ON Main readout selection Sub readout selection Memory mode selection Memory channel selection Memory write Memory transfer to VFO Memory clear Scan stop Start programmed/memory scan Start programmed scan Start F scan Start fine programmed scan Start fine F scan Start memory scan Start select memory scan Split OFF Split ON [TS] OFF (10 or 1 Hz step) [TS] ON (1 kHz step) [TS] ON (5 kHz step) [TS] ON (9 kHz step) [TS] ON (10 kHz step) [ANT1] selection [ANT2] selection [ANT1/RX] selection [ANT2/RX] selection
IC-756 TO CONTROLLER FE FE ECn Sc Data area (e.g. fd) FD Sub command number End of message code Preamble code (fixed)

(selectable in set mode)

Controllers address

Command number

BCD code area
OK or NG MESSAGE TO CONTROLLER FE FE EFB/FA FD End of message code Preamble code (fixed)
OK code (FB) or NG code (FA)
*1 Frequency data arrangement (BCD code) 10 Hz, 1 Hz, 1 kHz, 100 Hz, 100 kHz, 10 kHz, 10 MHz, 1 MHz, 1 GHz then 100 MHz *2 Scan edge channel P1=0100, P2=0101

FREQUENCY SETTING

s When rst applying power (CPU resetting)
Before rst applying power, make sure all connections required for your system are complete by referring to chapter 2. Then, reset the transceiver using the following procedure. NOTE: Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. q Make sure the transceiver power is OFF. w While pushing [M-CL] and [F-INP], push [POWER] for 2 sec. to turn power ON.

TRIPLE BAND STACKING REGISTER The triple band stacking register provides 3 memories in one band. 3 sets of a frequency and mode on each band are automatically stored when used. If a band key is pushed once, the last used frequency and mode are called up. When the key is pushed again, another stored frequency and mode are called up. This function is convenient when you operate 3 modes on one band. For example, one register is used for a CW frequency, another for an SSB frequency and the other one for an RTTY frequency.

[EXAMPLE]

14 MHz band

21 MHz band Push

14 b 21 m
14.025.00 14.195.00 14.090.00
21.025.00 21.295.00 21.090.00
s Direct frequency entry with the keypad
The transceiver has a keypad for direct frequency entry as described below. q Push [F-INP].

14.025 MHz

F-INP 5 ENT

appears.

18.0725 MHz
F-INP F-INP F-INP F-INP F-INP 7 ENT 5 ENT 6 ENT ENT ENT
w Input the desired frequency.
- Input (decimal point) between the MHz units and kHz units.
706 kHz 5.100 MHz 7.000 MHz 21.280 21.245
e Push [F-INPENT] to enter the input frequency.
- To cancel the input, push [MAIN/SUB] instead of [F-INPENT]
s Advanced tuning functions
QUICK TUNING STEP The operating frequency can be changed in kHz steps (1, 5, 9 or 10 kHz selectable) for quick tuning. q Push [TS] momentarily to display the quick tuning indicator.

AGC MID

SELECTING THE kHz STEP q Push [TS] momentarily to turn the quick tuning step ON. w Push [TS] for 2 sec. to enter the quick tuning step setting display.
- Selected tuning steps for all modes appear.

[WHEN TS is ON]

SSB CW RTTY AM FM 1kHz 1kHz 1kHz 1kHz 1kHz

10kHz 10kHz

w Rotate the tuning dial to change the frequency in programmed kHz steps. e Push [TS] again to turn OFF the indicator. r Rotate the tuning dial for normal tuning if desired.
e Select the desired operating mode. r Push [F-1] [F-4] to select the 1 kHz, 5 kHz, 9 kHz or 10 kHz tuning step, respectively. t Repeat steps e and r to select quick tuning steps for other modes, if desired. y Push [F-5] to exit the setting display.

t Push the [APF] switch momentarily to cancel the audio peak lter.

s CW reverse mode

CW-R (CW Reverse) mode receives CW signals with a reverse side CW carrier point like that of LSB and USB modes. Use when interfering signals are near a desired signal and you want to change the interference tone. Push [CW] for 2 sec. once or twice to select CW or CW-R mode.
- Check the interfering tone.
Desired signal Interference (600 Hz) (800 Hz) CW mode (USB side) Desired signal Interference (600 Hz) (400 Hz) CW-R mode (LSB side)
Receive audio tone response
1/3 octave BFO 1/2 octave BFO

Push for 2 sec.

s RTTY 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 RTTY-R (RTTY Reverse) mode. Push [RTTY] for 2 sec. once or twice to select RTTY or RTTY-R mode.
- Check the receive signal.

s CW pitch control

The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences (300 to 900 Hz) without changing the operating frequency.
The received CW audio pitch can be adjusted in 3 Hz steps.

s Filter selection

The lter selection switches the IF passband width as shown in the table at right. The lter selection is automatically memorized in each mode. When an optional lter is installed, set the optional lter setting in set mode. (p. 55) Optional lters are not selected by default. q If the start up screen is not selected (if [F-5]s function is [EXIT]), push [F-5] one or more times to exit. w Push the desired mode switch. e Push [(F-2)FILTER] to enter the filter selection screen.
- The lines show the selectable combination of IF lters.
Optional lter information IF Filter

FL-100 FL-101

Passband width
500 Hz/6 dB 250 Hz/6 dB 1.9 kHz/6 dB 350 Hz/6 dB 500 Hz/6 dB 250 Hz/6 dB 1.8 kHz/6 dB

Used selectivity

CW-N, RTTY-N CW-N, RTTY-N SSB-N, CW-N, RTTY-N CW-N, RTTY-N CW-N, RTTY-N CW-N, RTTY-N SSB-N, CW-N, RTTY-N
FL-223 FL-232 FL-52A FL-53A FL-222

455 kHz

r Push [(F-2)9MHz] or [(F-4)455kHz] one or more times to select the 9 MHz or 455 kHz IF lter, respectively.
- Push [(F-3)DEF] to select a default lter combination for the selected mode.
FL-257 information The IC-756 can use the optional FL-257 SSB WIDE FILTER. It has 3.3 kHz/6 dB passband width. To use the FL-257, select FL-222 and SSB narrow mode.
t Repeat steps w to r if desired. y Push [(F-5)EXIT] to exit the lter selection screen. Filter construction 9 MHz IF filter

FL-23 (15 kHz)

2nd IF signal Mixer

455 kHz IF filter

SFPC455E (15 kHz) SFPC455G (9 kHz) FL-96 (2.8 kHz)

3rd IF signal

FL-80 (2.4 kHz) FL-223 (1.9 kHz) FL-100 (500 Hz) FL-232 (350 Hz) FL-101 (250 Hz) optional

[VOX] switch in phone modes

Using the VOX function

q Select a phone mode (SSB, AM, FM). w Push [VOX] to turn the VOX function ON or OFF.
Adjusting the VOX function
q Select a phone mode (SSB, AM, FM). w Push [VOX] to turn VOX function ON. e Push [VOX] for 2 sec. to enter VOX set mode. r Select the VOX gain item using [F-1] or [F-2]. t While speaking into the microphone, rotate the tuning dial to the point where the transceiver is continuously transmitting. y Adjust the VOX delay for a convenient interval before returning to receive.
- Select the VOX delay item using [F-1] or [F-2]. - Rotate the tuning dial.
ANT 1 METER Po Po P.AMP OFF ATT OFF AGC MID VOX ON ON COMP OFF OFF

50% 50% 0.2s

1 14.100.00 [VOX SET]
VOXgain Anti-VOX VOX delay
u If the receive audio from the speaker toggles to transmit, adjust the anti VOX to the point where it has no effect.

s Meter function

The transceiver has 3 transmit meter functions for your convenience. Select the desired meter with the [METER] switch. Push [METER] to select RF power (Po), SWR or ALC for transmit metering.

[METER] switch

DISPLAY INDICATION Po SWR
MEASUREMENT Indicates the relative RF output power in %. Indicates the SWR over the transmission line. Indicates the ALC level. When the meter movement shows the input signal level exceeds the allowable level, the ALC limits the RF power. In such cases, reduce the [MIC GAIN] control.

s Speech compressor

The RF speech compressor increases average RF output power, improving signal strength and readability in SSB. q Select USB or LSB mode. w Preset the transceiver as follows: [COMP] function : OFF [METER] function : ALC [RF POWER] control : Max. counterclockwise 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.
[MIC GAIN] control [RF POWER] control
[COMP] switch [COMP] control
r Push [COMP] to turn the speech compressor ON. t Adjust the [COMP] control so that the ALC meter reads within the ALC zone whether you speak softly or loudly.

ALC meter

0 SWR 1 ALC 10 1.9 +20 +100
When the ALC meter peaks above the ALC zone, your transmitted voice may be distorted.

s SWR reading

The SWR meter indicates the SWR over the transmission line in all modes.

Less than 1.5:1

SWR meter
S Po 0 SWR 1 ALC 10 1.9 +20 +100
q Push [TUNER] to turn the antenna tuner OFF. w Push [METER] to select the Po meter. e Push [RTTY] to select RTTY mode. r Push [TRANSMIT]. t Rotate [RF POWER] clockwise past the 12 oclock position for more than 30 W output power (30%). y Set transmit meter to the SWR meter. u Read the SWR on the SWR meter.

- You may think there are 6 memo pads because 6 different frequencies (5 are in memo pads and 1 is in the temporary pad) are called up by [MP-R].
Pushing [MP-R] calls up the frequency and operating mode in a memo pad and the temporary pad sequentially.

TEMPORARY PAD

NOTE: If you change the frequency or operating mode called up from a memo pad with the tuning dial, etc., the frequency and operating mode in the temporary pad are erased.

21.485.00

Frequency and mode before pushing [MP-R].
The scan function can be used on the main readout only. You can operate a scan while operating on a frequency using the dualwatch or split functions. See p. 30 for details. F SCAN
Repeatedly scans within F span area. Start frequency
F frequency Scan Scan Jump Jump Scan

s Scan types

PROGRAMMED SCAN
Repeatedly scans between two scan edge frequencies (scan edge memory channels P1 and P2).
Scan edge P1 or P2 Scan edge P2 or P1

+F frequency

This scan operates in VFO mode.
This scan operates in both VFO and memory modes.

MEMORY SCAN

Repeatedly scans all programmed memory channels.

(select)

SELECT MEMORY SCAN
Repeatedly scans all select memory channels.

Mch 2 Mch 1

Mch 2 Mch 5 Mch 1

Mch 99

This scan operates in memory mode.

s Preparation

Channels
For programmed scan: Program scan edge frequencies into scan edge memory channels P1 and P2. For F scan: Set the F span (F scan range) in the scan screen. For memory scan: Program 2 or more memory channels except scan edge memory channels. For select memory scan: Designate 2 or more memory channels as select memory channels. To designate the channel as a select memory channel, select a memory channel, then push [(F-3)SELECT] in the scan screen (memory mode) or in the memory channel screen.

Scan speed

Scan speed can be selected from 2 levels, high or low, in set mode. See p. 56 for details.

Squelch condition

SCAN STARTS WITH PROGRAMMED SCAN MEMORY SCAN
Scan pauses on each channel when the scan resume is ON; not applicable when OFF.
The scan continues SQUELCH until it is stopped manually, and does OPEN not pause even if it detects signals.
Scan stops when detecting a signal.
SQUELCH If you set scan resume ON in set mode, the CLOSED scan pauses for 10 sec. when detecting a

Scan resume ON/OFF

You can select the scan to resume or cancel when detecting a signal, in set mode. Scan resume ON/OFF must be set before operating a scan. See p. 56 for ON/OFF setting and scan resume condition details.

s Miscellaneous (others) set mode

Calibration marker

This item is used for a simple frequency check of the transceiver. See p. 65 for calibration procedure. Turn the calibration marker OFF after checking the frequency of the transceiver.

Calibration marker ON

Calibration marker OFF (default)

Filter (9MHz)

When an optional 9 MHz lter is installed, this selection is necessary, otherwise, the lter cannot be selected. FL-223, FL-100, FL-232, FL-101 and NONE are selectable. See p. 28 for details.
No optional 9 MHz filter is installed. (default) FL-223 optional filter is installed. FL-100 optional filter is installed.

FL-223 FL-100

Filter (455kHz)
When an optional 455 kHz lter is installed, this selection is necessary, otherwise, the lter cannot be selected. FL-222, FL-52A, FL-53A and NONE are selectable. See p. 28 for details.
No optional 455 kHz filter is installed. (default) FL-222 optional filter is installed. FL-52A optional filter is installed.

FL-222 FL-52A

s Miscellaneous (others) set mode (continued)

Beep (confirmation)

A beep sounds each time a switch is pushed to conrm it. This function can be turned OFF for silent operation. The volume level can be set in level set mode. (p. 54)
Confirmation beep ON (default)

Confirmation beep OFF

Beep (band edge)
A beep sounds when an operating frequency enters or exits an amateur band. This functions independent of the conrmation beep setting (above). The volume level can be set in level set mode. (p. 54)
Band edge beep ON (default)

Band edge beep OFF

Scan speed
The transceiver has 2 speeds for scanning, high and low. See p. 47 for scanning details.

High speed (default)

Low speed

Scan resume

This item sets the scan resume function ON or OFF. ON: scan resumes 10 sec. after stopping on a signal (or 2 sec. after a signal disappears); OFF: scan does not resume after stopping on a signal. See p. 47 for scanning details.

Scan resume ON (default)

Scan resume OFF

RF/SQL control

The [RF/SQL] control can be set as the RF/squelch control (default), the RF gain control only (squelch is xed as open) or squelch control (RF gain is xed at maximum). See p. 2 for details.

RF+SQL

[RF/SQL] control as RF/squelch control (default) [RF/SQL] control as RF gain control [RF/SQL] control as squelch control

RF SQL

Quick dualwatch
When this item is set to ON, pushing [DUALWATCH] for 2 sec. sets the sub readout frequency to the main readout frequency and activates dualwatch operation. See p. 30 for details.

Space for optional high-stability crystal unit (CR-502) PLL unit
Space for optional voice synthesizer (UT-102) MAIN unit

s General

Frequency coverage: Receive 10.03060.000 MHz*1 Transmit 01.80001.999 MHz*2 03.50013.999 MHz*2 07.00017.300 MHz*2 10.10010.150 MHz 14.00014.350 MHz 18.06818.168 MHz 21.00021.450 MHz 24.89024.990 MHz 28.00029.700 MHz 50.00054.000 MHz*2
*1 Some frequency bands are not guaranteed. *2 1.8301.850, 3.5003.800, 7.0007.100, 50.20051.200 for France version.
Microphone connector: 8-pin connector (600 ) ELEC-KEY connector : 3-conductor 6.35(d) mm (14") KEY connector : 3-conductor 6.35(d) mm (14") SEND connector : Phono (RCA) ALC connector : Phono (RCA)

s Receiver

Intermediate frequencies:
SSB 1st 2nd 3rd 4th CW, RTTY AM FM
69.0115 MHz 69.0106 MHz 69.0100 MHz 69.0115 MHz 9.0115 MHz 9.0106 MHz 9.0100 MHz 9.0115 MHz 455 kHz 455 kHz 455 kHz 455 kHz
15.625 kHz 15.625 kHz 15.625 kHz
: USB, LSB, CW, RTTY, AM, FM Number of memory : 101 (99 regular, 2 scan edges) channels Antenna connector : PL-and phono (RCA, 50 ) Usable temperature : 10C to 60C (14F to 140F) range Frequency stability : Less than 200 Hz from 1 min. to 60 min. after power ON. After that rate of stability less than 30 Hz/hr. at +25 C (+77F). Temperature uctuations 0 C to +50 C (+32 F to +122 F) less than 350 Hz. Frequency resolution : 1 Hz Power supply : 13.8 V 15% (negative ground) requirement Current consumption : Transmit max. power 20 A Receive standby 2.5 A max. audio 2.7 A Dimensions : 340(W) 111(H) 285(D) mm (W) (H) (D) in Weight : 10.5 kg (23 lb 2 oz) CI-V connector : 2-conductor 3.5(d) mm (18")
Sensitivity SSB, CW, RTTY (10 dB S/N) AM (10 dB S/N) FM (12 dB SINAD)
: 0.16 V (1.8029.99 MHz)*1 0.13 V (50.054.0 MHz)*V (0.51.799 MHz) 2 V (1.8029.99 MHz)*1 0.5 V (28.029.99 MHz)*1 0.32 V (50.054.0 MHz)*2
*1 Pre-amp 1 ON; *2 Pre-amp 2 ON Squelch sensitivity (threshold):
SSB, CW, RTTY FM Selectivity SSB, CW, RTTY
Less than 5.6 V Less than 1.0 V :
More than 2.4 kHz/ 6 dB Less than 3.8 kHz/ 60 dB AM More than 9.0 kHz/ 6 dB Less than 20 kHz/ 60 dB FM More than 15 kHz/ 6 dB Less than 30 kHz/ 60 dB Spurious and image : More than 70 dB rejection ratio (except IF through in 50 MHz

s Transmitter

Output power (continuously adjustable): SSB/CW/RTTY/FM 2100 W AM 140 W Modulation system : SSB, AM PSN modulation Variable reactance modulation FM Spurious emissions : 50 dB (HF bands) 60 dB (50 MHz band) Carrier suppression : 40 dB Unwanted sideband : 55 dB suppression TX variable range : 9.999 kHz

SP-20 EXTERNAL SPEAKER

4 audio lters; headphone jack; can connect to 2 transceivers. Input impedance: 8 Max. input power: 5 W
IC-AT500 HF AUTOMATIC ANTENNA
500 W automatic antenna tuner. Includes an automatic antenna selector for 4 separate antennas.
CT-17 CI-V LEVEL CONVERTER
For remote transceiver control using a personal computer equipped with an RS-232C port. You can change frequencies, operating mode, memory channels, etc.

SP-21 EXTERNAL SPEAKER

Designed for base station operation. Input impedance: 8 Max. input power: 5 W

SM-8 DESKTOP MICROPHONE

Electret condenser-type desktop microphone including 2 connection cables for simultaneous connection of 2 transceivers. [UP] and [DOWN] switches are included.
CR-502 HIGH-STABILITY CRYSTAL UNIT
Contains a temperature-compensating oven heater and crystal unit for improved frequency stability. Frequency stability: 0.5 ppm (30C to +60C; 22F to +140F)
UT-102 VOICE SYNTHESIZER UNIT
Announces operating frequency, mode and S-meter level.

Count on us!

A-5415H-1EX-e Printed in Japan Copyright 1996 by Icom Inc.
6-9-16 Kamihigashi, Hirano-ku, Osaka 547, Japan