Handleiding Icom IC-746 (pagina 4 van 90) (Engels)

12350

Verklein

Vergroot

Pagina terug

1/90

Pagina verder

INSTRUCTION MANUAL

VHF/HF ALL MODE TRANSCEIVER

i746

This device complies with Part 15 of the FCC rules. Operation is sub-

ject to the following two conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

PANEL DESCRIPTION

1-1 Front panel

q POWER SWITCH [POWER]

➥ Push momentarily to turn power ON. (p. 11)

• Turn the optional DC power supply ON in advance.

➥ Push and hold to turn power OFF.

w TRANSMIT SWITCH [TRANSMIT]

Toggles between transmit and receive.

• The [TX] indicator lights red while transmitting and the

[RX] indicator lights green when the squelch is open.

e HEADPHONE JACK [PHONES] (p. 67)

Accepts headphones.

• When headphones are connected, the internal speaker

or connected external speaker does not function.

r ELECTRONIC KEYER JACK [ELEC-KEY] (p. 67)

Accepts a paddle to activate the internal electronic

keyer for CW operation.

• Selection between the internal electronic keyer, bug-key

and straight key operation can be made in keyer set

mode.

• A straight key jack is separately available on the rear

panel.

• Key polarity (dot and dash) can be reversed in keyer set

mode.

• 4-channel memory keyer is available for your conve-

nience.

t MICROPHONE CONNECTOR [MIC]

Accepts the supplied or optional microphone.

• See p. 85 for appropriate microphones.

• See p. 67 for microphone connector information.

y ANTENNA TUNER SWITCH [TUNER] (p. 59)

➥ 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.

u ANTENNA SELECTOR SWITCH [ANT] (p. 71)

Toggles between the HF and 50 MHz antenna con-

nectors.

i NOISE REDUCTION LEVEL CONTROL [NR]

(p. 40)

Adjusts the noise reduction level when the noise re-

duction function is in use. Set for maximum read-

ability.

o AUDIO PEAK FILTER CONTROL [APF] (p. 20)

Varies the peak frequency of the audio peak ﬁlter to

pick out a CW signal from interference while the

APF function is ON.

!0 NOISE REDUCTION SWITCH [NR] (p. 40)

Toggles the noise reduction function ON and OFF.

Functions in SSB, CW and RTTY modes.

!1 AUDIO PEAK FILTER/AUTO NOTCH SWITCH

[APF/ANF]

➥ Toggles between the audio peak (p.20) and auto

notch (p. 40) functions.

• The audio peak ﬁlter functions in CW mode only; the

auto notch functions in SSB, FM and AM modes only.

• The APF or ANF indicator appear in the display de-

pending on which function is selected.

➥ When the APF indicator appears, push this

switch for 1 sec., one or more times to select 320

Hz, 160 Hz or 80 Hz bandwidths.

• Use the [APF] control to vary the peak frequency.

!2 AF CONTROL [AF] (inner control; p. 12)

Varies the audio output level from the speaker.

PHONES

TRANSMIT

POWER

TUNER ANT

ELEC-KEY

MIC

NR APF/ANF

AF RF/SQL

NR APF

PANEL DESCRIPTION

!3 RF GAIN/SQUELCH CONTROL [RF/SQL] (p. 12)

Adjusts the RF gain and squelch threshold level.

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.

• The control can be set as the RF gain control only

(squelch is fixed open) or squelch control (RF gain is

ﬁxed at maximum) in set mode.

!4 MIC GAIN CONTROL [MIC GAIN]

Adjusts the microphone input gain.

!5 RF POWER CONTROL [RF PWR] (p. 84)

Continuously varies the RF output power from mini-

mum (2 W*) to maximum (100 W*).

*AM mode: 2–40 W, other modes: 5–100 W.

!6 CW PITCH CONTROL [CW PITCH] (p. 20)

Shifts the received CW audio pitch and monitored

CW audio pitch without changing the operating fre-

quency.

• The pitch can be changed from 300 to 900 Hz in approx.

3 Hz steps.

!7 ELECTRONIC CW KEYER SPEED CONTROL

[KEY SPEED] (p. 22)

Adjusts the internal electronic CW keyer’s speed.

• 6 wpm to 60 wpm can be set.

!8 PREAMP/ATTENUATOR SWITCH [P.AMP/ATT]

(p. 38)

➥ Push momentarily to toggle between preamp-1

and preamp-2.

➥ Push for 1 sec. to toggle the attenuator function

ON and OFF.

!9 NOISE BLANKER SWITCH [NB] (p. 39)

Toggles the noise blanker ON and OFF. The noise

blanker reduces pulse-type noise such as that gen-

erated by automobile ignition systems.This function

cannot be used for FM, or non pulse-type noise.

@0 VOX/BREAK-IN SWITCH [VOX/BK-IN]

➥ In SSB, AM and FM modes, push momentarily to

turn the VOX function ON; push for 1 sec. to turn

the VOX function OFF. (p. 43)

➥ In CW mode, push momentarily to select semi

break-in, full break-in or break-in OFF; push for 2

sec. to enter break-in set mode. (p. 44)

@1 MONITOR SWITCH [MONI] (p. 45)

➥ Push to toggle the monitor function ON and OFF.

➥ Push for 2 sec. to enter and exit monitor set

mode.

Adjustable

range

Maximum

RF gain

Maximum

RF gain

sensitivity

Minimum

RF gain

sensitivity

• Setting squelch

• Setting RF gain

Squelch

threshold

Squelch

open

S-meter squelch

operating

range

S-meter squelch

threshold

Noise squelch

operating range

MIC GAIN RF PWR CW PITCH P.AMP/ATTKEY SPEED NB VOX/BK-IN MONITOR

!4 !5 !6 !7 !8 !9

PANEL DESCRIPTION

$5 PASSBAND TUNING CONTROLS [TWIN PBT]

(p. 41)

Adjust the receiver’s “passband width” of the 455

kHz and 9 kHz IF ﬁlters for the inner and outer con-

trols, respectively.

• Passband width and center frequency are displayed in

the function display.

• 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 Hz in 3 Hz steps are available.

$6 VFO/MEMORY SWITCH [V/M]

➥ Toggles the selected readout operating mode be-

tween VFO mode and memory mode when

pushed.

➥ Transfers the memory contents to VFO when

pushed for 2 sec.

$7 CALL CHANNEL SWITCH [CALL] (p. 51)

Brings up the call channel.

• When the call channel is displayed, push this switch to

exit call channel mode.

$8 MEMORY WRITE SWITCH [MW] (p. 51)

Stores the selected readout frequency and operat-

ing mode into the displayed memory channel when

pushed for 2 sec.

• This function is available in both VFO and memory

modes.

$9 MEMORY CLEAR SWITCH [M-CL] (p. 50)

Clears the selected readout memory channel con-

tents when pushed for 2 sec. in memory mode.

• This switch does not function in VFO mode.

%0 MEMORY CHANNEL CONTROL [M-CH] (p.49)

Selects a memory channel.

• Rotate clockwise to increase the memory channel; ro-

tate counterclockwise to decrease the memory channel.

M-CH

V/M CALL

M VFO

TWIN PBT

MW M-CL

$6 $7

$8 $9

[ANT1][ANT2]

[ANT144MHz]

[REMOTE]

[SP]

[KEY JACK] [ACC1/2] [SEND]

[ALC]

1-2 Rear panel

q CALIBRATION POT [CAL]

This is used for frequency calibration (p. 65).

• The transceiver has been adjusted and calibrated thor-

oughly at the factory. Under normal circumstances, the

frequency does not need to be recalibrated.

w COMPRESSION LEVEL CONTROL [COMP GAIN]

(p. 46)

Adjusts the speech compression level in SSB.

☞ NOTE: Refer to “12-2 Rear panel” (p. 68) for details

concerning other rear panel connectors, etc.

MENU SELECTION

M1M2M3M4 -1

BLANK

ANT

USB

AGCAMP

SWR

ALC

20 50

3211.5

579 20 40 60

100%

AGCDUPCMPTCNSCP

F3 F4 F5

TCN

SSBTXTone

SCP

STEP

0.5k

F1 F5

F3 F4 F5

AGCDUP1/4KEYSCP

F3 F4 F5

SNDEDT001SET

KEY

F3 F4 F5

001

SND

50%

SideToneLevel

SET

Normal

NumberStyle

001

F3 F4 F5

EDT

DELSPC

CQTESTCQTEST

F3 F4 F5

AGCDUP1/4RTYSCP

2125

RTTYMark

RTY

F3 F4 F5

AGCDUPTONTSQSCP

F3 F5

AGCDUPCMPSCP

VFOA

SSB MODE

BAND SCOPE MENU

RTTY MODE

AM MODE

FM MODE

CW MODE

To band scope

EDIT MENU

CONTEST NUMBER MENU

KEYER SET MODE

MEMORY KEYER MENU

SEND MENU

(p. 24)

(p. 23)

(p. 27)

(p. 26)

(p. 25)

(

p. 37

)

(p. 29)

(p. 19)

RTTY MENU

TONE CONTROL MENU

To band scope

2-1

Menu set 1 ﬂow chart

Pushing [MENU] toggles between menu set 1 (M1)

and menu set 2 (M2) in the function display.

Depending on the mode and menu item selected, the

action of the multi-function keys ([F1] to [F5]) changes.

USING DIFFERENT OPERATING MODES

4-2 Operating CW

Å RECEIVING

Band keys

[CW/RTTY]

[AF]

[DIAL]

Normal Reverse

interferenceBFOinterference

signal

BFO

signal

[APF] [APF/ANF]

[CW PITCH]

➀ Push a band key to select the desired band.

➁ Push [CW/RTTY] to select CW or CW-R.

• Push [CW/RTTY] for 2 sec. to toggle between CW and

CW-R modes.

➂ Rotate [AF] to set audio to a comfortable listening

level.

➃ Rotate the tuning dial to simultaneously tune a sig-

nal and its side tone.

• S-meter indicates received signal strength.

■ ABOUT CW REVERSE MODE

■ ABOUT THE AUDIO PEAK FILTER

■ ABOUT THE CW PITCH CONTROL

The received CW audio pitch and monitored CW audio

can be adjusted to suit your preferences (300 to 900

Hz in 3 Hz steps) without changing the operating fre-

quency.

➥ Rotate [CW PITCH] clockwise to increase the pitch

frequency; counterclockwise to decrease the pitch

frequency.

☞ NOTE: When adjusting the CW pitch and the audio

peak frequency is ON (see above), the center fre-

quency of the audio peak filter may have to be

readjusted. Otherwise, receive audio may not be

emitted.

The APF changes the receive frequency response by

boosting a particular frequency for better copying of

desired CW signals. The peak frequency can be ad-

justed from 300 to 900 Hz manually. The boost fre-

quency width can be selected from 80, 160 or 320 Hz.

➀ Push [APF/ANF] to turn the audio peak ﬁlter ON.

➁ Push [APF/ANF] for 2 sec., one or more times, to

select the ﬁlter width.

• W=320 Hz, M=160 Hz, N=80 Hz.

➂ Rotate the [APF] control to adjust the center fre-

quency of the peak frequency.

CW reverse mode receives CW signals with a reverse

side CW carrier point like that of LSB and USB modes.

Use this mode when interfering signals are near the

desired signal and you want to change the interference

tone.

DSP

USING DIFFERENT OPERATING MODES

✔Convenient functions for receive

q Preampliﬁer and attenuator (p. 38) The preamp ampliﬁes received signals in the front end

circuit to improve the S/N ration and sensitivity. The at-

tenuator prevents a desired signal from distorting

when very strong signals are near the desired fre-

quency or when very strong electric fields, such as

from a broadcasting station, are near you.

w Noise blanker (p. 39) The noise blanker is used to reduce pulse-type noise

caused by vehicle ignition systems and key clicks from

strong CW signals on nearby frequencies.

e Noise reduction (p. 40) The noise reduction function reduces noise compo-

nents and picks out desired signals which are buried

in noise. This function digitally transposes receive

audio components to produce desired AF frequency

characteristics at the IF stage.

r Twin PBT (passband tuning) (p. 41) The PBT function electronically narrows the receiver’s

IF passband widths to reduce interference. Moving

both [TWIN PBT] controls to the same position shifts

the IF.

t AGC (auto gain control) (p. 39) The AGC controls receiver gain to produce a constant

audio output level even when the received signal

strength is varied by fading, etc.

y 1/4 function (p. 39) Normally, one rotation of the tuning dial changes the

frequency by about 5 kHz (in 10 Hz tuning steps).

Using the 1/4 function sets the tuning dial so that one

rotation changes the frequency by about 1.25 kHz (in

10 Hz steps). This is convenient for critical tuning.

DSP

USING DIFFERENT OPERATING MODES

Band keys

[RF PWR]

[CW/RTTY]

[TRANSMIT]

[KEY SPEED]

ı TRANSMITTING

Before transmitting, monitor your selected operating

frequency to make sure transmitting won’t cause inter-

ference to other stations on the same frequency.

➀ Connect an electronic keyer or paddle to the [ELEC-

KEY] jack on the rear panel of the transceiver

(p. 68).

➁ Push a band key to select the desired band.

➂ Push [CW/RTTY] to select CW or CW-R.

• Push [CW/RTTY] for 2 sec. to toggle between CW and

CW-R modes.

➃ Rotate [AF] to set audio to a comfortable listening

level.

➄ Push [TRANSMIT] to set the transceiver to the

transmit condition.

➅ Use the electronic keyer or paddle to key your CW

signals.

• The P0

meter indicates transmitted CW signal strength.

■ ABOUT KEYING SPEED

■ CW SIDE TONE FUNCTION

The transceiver’s internal electronic keyer speed can

be adjusted from 6 to 60 wpm.

➥ Rotate [KEY SPEED] clockwise to increase keying

speed; counterclockwise to decrease keying speed.

When the transceiver is in the receive condition (and

the break-in function is OFF—p. 44) you can listen to

the tone of your CW signal without actually transmit-

ting. This allows you to match your transmit signal ex-

actly to another station’s. This also convenient for CW

practice. CW side tone level can be adjusted in CW set

mode (p. 27).

✔Convenient functions for transmit

Break-in function (p. 44) The break-in function automatically toggles the trans-

ceiver between transmit and receive when operating

CW. This function can be set to full break-in or semi

break-in.

USING DIFFERENT OPERATING MODES

M1M2M3M4 -1

F3 F4 F5

SNDEDT001SET

KEY

F3 F4 F5

001

SND

50%

SideToneLevel

SET

Normal

NumberStyle

001

F3 F4 F5

EDT

DELSPC

CQTESTCQTEST

BLANK

VFOA

ANT

AGCAMP

SWR

ALC

20 50

3211.5

579 20 40 60

100%

NAR

AGCDUP1/4KEYSCP

Memory keyer menu

Keyer set (SET) menu

Contest number (001) menu

Edit (EDT) menu

Transmit (SND) menu

Ç ELECTRONIC KEYER FUNCTIONS

The transceiver has a number of convenient functions

for the electronic keyer that can be accessed from the

memory keyer menu.

➀ Push [CW/RTTY] to select CW mode.

➁ Push [MENU] to select M1.

➂ Push [F4] to select the memory keyer menu.

➃ Push one of the multi-function keys ([F1] to [F5]) to

select an item in the memory keyer menu. See the

diagram below.

(1) Memory keyer settings menu

■ IN CW MODE

Goedemiddag
Is er iemand die de Nederlandse handleiding heeft van de IC 746? Gesteld op 16-12-2021 om 16:58
Reageer op deze vraag Misbruik melden
Is het mogelijk om de IC746 ook op 70 Mhz te laten werken??Het schijnt iets met verwijderen van diode's te zijn. Wie weet hier iets van. Alvast bedankt 73 PA0GUS Gesteld op 15-11-2011 om 14:10
Reageer op deze vraag Misbruik melden
- Nee
  Geantwoord op 23-12-2012 om 22:30
  Waardeer dit antwoord Misbruik melden

Misbruik melden

Gebruikershandleiding.com neemt misbruik van zijn services uitermate serieus. U kunt hieronder aangeven waarom deze vraag ongepast is. Wij controleren de vraag en zonodig wordt deze verwijderd.

Product:

Spelregels forum

Om tot zinvolle vragen te komen hanteren wij de volgende spelregels:

lees eerst de handleiding door;
controleer of uw vraag al eerder door iemand anders is gesteld;
probeer uw vraag zo duidelijk mogelijk te stellen;
heeft u een probleem en al geprobeerd om dit op te lossen, vermeld dit erbij aub;
heeft u een oplossing gekregen van een bezoeker dan horen wij dat graag in dit forum;
wilt u een reactie geven op een vraag of antwoord, gebruik dan niet dit formulier maar klik op de knop 'reageer op deze vraag';
uw vraag wordt direct op de website gezet; vermijd daarom persoonlijke gegevens in te vullen;

Belangrijk! Als er een antwoord wordt gegeven op uw vraag, dan is het voor de gever van het antwoord nuttig om te weten als u er wel (of niet) mee geholpen bent! Wij vragen u dus ook te reageren op een antwoord.

Belangrijk! Antwoorden worden ook per e-mail naar abonnees gestuurd. Laat uw emailadres achter op deze site, zodat u op de hoogte blijft. U krijgt dan ook andere vragen en antwoorden te zien.

Abonneren

Abonneer u voor het ontvangen van emails voor uw Icom IC-746 bij:

nieuwe vragen en antwoorden
nieuwe handleidingen

U ontvangt een email met instructies om u voor één of beide opties in te schrijven.

Ontvang uw handleiding per email

Vul uw emailadres in en ontvang de handleiding van Icom IC-746 in de taal/talen: Engels als bijlage per email.

De handleiding is 2,08 mb groot.

U ontvangt de handleiding per email binnen enkele minuten. Als u geen email heeft ontvangen, dan heeft u waarschijnlijk een verkeerd emailadres ingevuld of is uw mailbox te vol. Daarnaast kan het zijn dat uw internetprovider een maximum heeft aan de grootte per email. Omdat hier een handleiding wordt meegestuurd, kan het voorkomen dat de email groter is dan toegestaan bij uw provider.

Stel vragen via chat aan uw handleiding

Stel uw vraag over deze PDF

Uw handleiding is per email verstuurd. Controleer uw email

Als u niet binnen een kwartier uw email met handleiding ontvangen heeft, kan het zijn dat u een verkeerd emailadres heeft ingevuld of dat uw emailprovider een maximum grootte per email heeft ingesteld die kleiner is dan de grootte van de handleiding.

Er is een email naar u verstuurd om uw inschrijving definitief te maken.

Controleer uw email en volg de aanwijzingen op om uw inschrijving definitief te maken

U heeft geen emailadres opgegeven

Als u de handleiding per email wilt ontvangen, vul dan een geldig emailadres in.

Uw vraag is op deze pagina toegevoegd

Wilt u een email ontvangen bij een antwoord en/of nieuwe vragen? Vul dan hier uw emailadres in.

Icom IC-746 Handleiding

Hulp nodig? Stel uw vraag in het forum

Misbruik melden

Product:

Spelregels forum

Abonneren

Ontvang uw handleiding per email

Stel vragen via chat aan uw handleiding

Uw handleiding is per email verstuurd. Controleer uw email

Er is een email naar u verstuurd om uw inschrijving definitief te maken.

U heeft geen emailadres opgegeven

Uw vraag is op deze pagina toegevoegd

Info

Icom IC-746 Handleiding

Hulp nodig? Stel uw vraag in het forum

Forum

Misbruik melden

Product:

Spelregels forum

Abonneren

Ontvang uw handleiding per email

Stel vragen via chat aan uw handleiding

Uw handleiding is per email verstuurd. Controleer uw email

Er is een email naar u verstuurd om uw inschrijving definitief te maken.

U heeft geen emailadres opgegeven

Uw vraag is op deze pagina toegevoegd

Info