Icom IC-725 Bedienungsanleitung

?COM

INSTRUCTION MANUAL

HF ALL BAND TRANSCEIVER

IC-725

loom Inc.

CAUTIONS INTRODUCTION

(1) Before using the IC-725, read all instructions carefully

and completely.

(2) SAVE THIS INSTRUCTION MANUAL -This instruc-

tion manual contains important safety and operating

instructions for the IC-725.

(3) NEVER connect the DC power cable to an AC outlet.

This will ruin the transceiver.

(4) NEVER apply more than 16 V DC to the DC POWER

SOCKET on the transceiver rear panel. Check the

power source voltage before connecting the power

cable.

Icom's new IC-725 HF ALL BAND TRANSCEIVER is

designed to meet the increasing demand of today's amateur

radio users for transceivers with fewer controls and switches,

especially for hands-free mobile operation.

The IC-725 has the following advanced features:

•DDS (Direct Digital Synthesizer)

_«26 user-programmable memory channels

•3 scan types

•Selectable tuning rate in 10, 20 or 50 Hz steps

•Band stacking register capability

•10 dB preamplifier

•20 dB' attenuator

(5) NEVER allow children to touch the transceiver during

operation.

(6) NEVER expose the transceiver to rain, snow or any

liquid.

(7) AVOID using or storing the transceiver in temperatures

below -10°C (+14°F) or over +60°C (+150°F).

To thoroughly understand the capabilities of your new

IC-725, please read this manual carefully before attempting

operation. If you have any questions regarding the opera-

tion of the IC-725, feel free to contact your nearest

authorized Icom Dealer or Service Center.

OPERATING CAUTIONS UNPACKING

(1) In any mobile operation, DO NOT operate the trans-

ceiver without running the vehicle's engine. The

vehicle's battery will quickly run out if the transceiver

power is ON while your vehicle's engine is OFF.

(2) In maritime mobile operation, keep interconnection

cables as far away as possible from electronic instru-

ments to prevent instrument malfunctions.

(3) BE CAREFUL! If the transceiver is not securely

mounted with bolts and nuts, personal injury or

transceiver damage could occur due to braking, wave

shock, vibrations, etc.

(4) AVOID using the transceiver in excessively dusty

environments.

(5) AVOID placing the transceiver in direct sunlight.

(6) BE CAREFUL! The heatsink may become hot when

operating the transceiver continuously for long periods.

(7) Transmitting without an antenna may damage the

transceiver.

Accessories included with the IC-725: Qty.

©DC power cable (OPC-025A) 1

@Hand microphone (HM-1 2) 1

<D Spare fuse (20 A) 1

®Spare fuse (4 A) 1

(D Screws B1 4x12 CR (for optional MB-23 installation) .... 2

©Screws CO 3x6(for optional MB-23 installation) 4

TABLE OF CONTENTS

CAUTIONS

OPERATING CAUTIONS

INTRODUCTION. .

UNPACKING

TABLE OF CONTENTS.

1. CONTROL FUNCTIONS 1-4

1-1FRONT PANEL. 1

1-2REAR PANEL.- 3

1-3 MICROPHONE (HM-12) 3

1- 4FUNCTION DISPLAY 4

2. INSTALLATION ..5-6

2- 1UNPACKING 5

2-2 MOUNTING THE TRANSCEIVER 5

2-3 ANTENNA 5

2-4 GROUNDING 5

2-5 WIRING THE DC POWER CABLE 5

2- 6REAR PANEL CONNECTIONS 6

3. SYSTEM INTERCONNECTIONS 7-12

3- 1POWER SUPPLY CONNECTIONS 7

3-2 LINEAR AMPLIFIER CONNECTIONS. .8

3-3ANTENNA TUNER CONNECTIONS ... 9

3-4 AH-3 OPERATING PROCEDURES .... 10

3-5 AFSK TERMINAL UNIT

CONNECTION 10

3-6 MIC CONNECTOR INFORMATION 10

3- 7ACC SOCKET INFORMATION 11

3-8 REMOTE JACK (CI V)

INFORMATION 12

4. PRE-OPERATION 13-16

4- 1INITIAL SETTINGS 13

4-2 FREQUENCY SELECTION 13

4-3VFO AAND VFO BSELECTION .... 14

4-4 RECEIVER CONTROLS

AND SWITCHES 15

4- 5TRANSMITTER CONTROLS

AND SWITCH 16

5. BASIC OPERATION 17-21

5- 1SSB OPERATION 17

5-2 CW OPERATION 18

5-3 AM OPERATION 19

5-4 FM OPERATION 20

5-5 RIT/Af FUNCTION 21

5-6 SPLIT OPERATION 21

6. MEMORY CHANNEL OPERATION .... 22

6-1 VFO AND MEMORY MODE

SELECTION 22

6-2 MEMORY CHANNEL SELECTION 22

6-3 MEMORY WRITING 22

6- 4FREQUENCY TRANSFERRING

[M VFO] v..22

7. SCANNING OPERATION 23

7-1SCAN TYPES 23

7- 2PROGRAMMED SCAN 23

7-3MEMORY SCAN 23

7-4 SELECTED MODE MEMORY SCAN. . . 23

7- 5SUPPLEMENTAL SCAN SETTINGS ... 23

8. MAINTENANCE AND

ADJUSTMENT 24-28

8- 1DISASSEMBLING THE

TRANSCEIVER

8-2 FUSE REPLACEMENT 25

8-3 CPU RESETTING 25

8-4 CPU BACKUP BATTERY 25

8-5 CLEANING 25

8-6 TROUBLESHOOTING .*26

8- 7ADJUSTMENTS 27

9. INSTALLATION OF OPTIONS 29-30

9- 1UI-7 AM •FM UNIT 29

9-2 UT-30 PROGRAMMABLE TONE

ENCODER UNIT 29

9-3 CW NARROW FILTERS 29

9-4 CR-64 HIGH-STABILITY CRYSTAL

UNIT 30

9- 5MB-23 CARRYING HANDLE 30

10. INSIDE VIEWS 31-32

10- 1MAIN UNIT 31

10-2 PLL UNIT 32

11. BLOCK DIAGRAM 33

12. SPECIFICATIONS 34

13. OPTIONS 35-36

SCHEMATIC DIAGRAM SEPARATE

1CONTROL FUNCTIONS

1-1 FRONT PANEL (D <D

AF-§>-SQL MIC -§>- RF PWR

(D RECEIVE INDICATOR

Indicates that the squelch is open.

(D TRANSMIT/ALC INDICATOR (p. 16)

Lights when the transceiver is transmitting.

©METER

Shows the strength of areceived signal and relative

output power while transmitting.

@VFO SWITCH [VFO] (pgs. 14, 22)

Selects VFO Aor VFO Bfor tuning purposes.

©SPLIT SWITCH [SPLIT] (p. 21)

Selects split operation.

©MEMORY CHANNEL UP/DOWN SWITCHES [UP]

[DOWN] (p. 22)

Changes memory channels.

(7) MEMORY WRITE SWITCH [MW] (p. 22)

Stores the displayed frequency and mode into the

displayed memory channel.

®MEMORY READ SWITCH [MEMO] (p. 22)

Selects MEMORY CHANNEL mode.

©RIT SWITCH [RIT] (pgs. 15,21)

Turns ON and OFF the RIT circuit.

>RIT CONTROL (pgs. 15,21)

Shifts the receive frequency when the RIT function is

ON.

)FUNCTION SWITCH [FUNC]

Activates the secondary switch functions.

SWITCH FUNCTION

[FUNC] +[VFO] Activates programmed scan. (p. 23)

[FUNC] +[SPLIT] Equalizes the frequency and mode

of operation of the two VFOs.

[FUNC] +[MEMO] Activates memory scan. (p. 23)

[FUNC] +[MW] Activates the frequency transfer

function, (p. 22)

[FUNC] +[RIT] Adds the RIT shift frequency to the

displayed frequency, (p. 21

)

[FUNC] +[TUNER] Bypasses the AH-3 HF AUTO-

MATIC ANTENNA TUNER

(optional), (p. 10)

[FUNC] +[kHz]

[FUNC] +[BAND]

Changes the tuning step. (p. 14)

Turns ON and OFF the 10 Hz digit

on the frequency display, (p. 14)

[FUNC] +[ LOCK]

+[MEMO] Activates the mode selected me-

mory scan. (p. 23)

©ANTENNA TUNER SWITCH [TUNER] (p. 10)

Tunes the AH-3 HF AUTOMATIC ANTENNA TUNER

(optional).

(0) BAND SWITCH [BAND] (p. 13)

Allows the MAIN DIAL to select bands only.

CONTROL FUNCTIONS -|

See Section 1-4FUNCTION DISPLAY

inn mMEMO

r/c

IUU.UU split LU

HF TRANSCEIVER 10725

VFO SPLIT UP

fpTsCAN||A=B

|M. SCAN] [M-VFO~]

M-CH

MEMO MW DOWN

VFO SPLIT

|P. SCAN |IA=B|

|m.scan|

MEMO MW

(!)

M-CH

DOWN*

(M) DIAL LOCK SWITCH [LOCK]

Deactivates the MAIN DIAL and transmits asubaudible

tone signal in FM mode.

(I5) MHz TUNING RATE SWITCH [MHz] (p. 14)

Sets the tuning steps at 1MHz.

(0) kHz TUNING RATE SWITCH [kHz] (p. 14)

Sets the tuning rate for 1kHz steps.

©MAIN DIAL

Changes the displayed frequency.

(f|) BRAKE ADJUSTMENT SCREW (p. 27)

Adjusts MAIN DIAL tension.

C\J> MODE SWITCHES (pgs. 17-20)

Selects the desired operating mode.

@AGC SWITCH [AGC] (p. 15)

Changes the time constant of the AGC circuit.

(2j) PREAMP SWITCH [PRE] (p. 15)

Activates the built-in 10 dB gain RF preamplifier.

(22) ATTENUATOR SWITCH [ATT] (p. 15)

Activates the 20 dB attenuator to prevent front end

overload.

(23) NOISE BLANKER SWITCH [NB] (p. 15)

Activates the noise blanker circuit.

(24) MIC CONNECTOR [MIC] (p. 10)

Accepts Icom hand or desk microphones. Refer to

Section 13 OPTIONS.

(25) RF POWER CONTROL [RF PWR] (p. 16)

Adjusts RF output power.

(26) MIC GAIN CONTROL [MIC] (p. 16)

Adjusts microphone input gain.

@SQUELCH CONTROL [SQL] (p. 15)

Adjusts the squelch threshold level.

(28) AF GAIN CONTROL [AF] (p. 15)

Adjusts audio output level.

(29) HEADPHONES JACK [PHONE]

Accepts astandard 1/4 inch plug from 4~16 £1 mono

or stereo headphones.

(30) TRANSMIT/RECEIVE SWITCH [TRANSMIT]

Selects transmit or receive.

(31) POWER SWITCH [POWER]

Turns the power ON and OFF.

-J CONTROL FUNCTIONS

1-2 REAR PANEL

UULi

ANT

©© DC 13 8V

REMOTE StS

ICOM LCJJ25.

SEIUIM

EXT SP BK IN—DELAY KEY ACCI2I ACC(I) ALC SEND

®<§ «®®®

©ft ooee V. .

Ina-

\\5J £?/// VVv^TPv/ a

@ANTENNA CONNECTOR (pgs. 5, 6)

Connects a50 £2 antenna with aPL-259 plug.

(§) CI VREMOTE CONTROL JACK (p. 12)

Designed for use with apersonal computer for remote

operation of transceiver functions.

(3J) DC POWER SOCKET (p. 7)

Accepts 13.8 VDC using the supplied DC cable.

(35) TUNER CONTROL SOCKET (p. 9)

Accepts the optional AH-3 HF AUTOMATIC ANTEN-

NA TUNER control cable.

®SEND CONTROL JACK (p. 8)

Goes to ground when transmitting to control an external

unit.

@ALC INPUT JACK (p. 8)

Connects to the ALC output jack of anon-lcom linear

amplifier.

(§) ACCESSORY SOCKETS (p. 11)

Input and output connections for external equipment.

(§) CW KEY JACK (pgs. 6, 18)

Accepts astraight key or electronic keyer with astan-

dard 1/4 inch 3-conductor plug.

@CW BREAK-IN DELAY CONTROL (p. 18)

Adjusts the transmit-to-receive switching delay time for

CW semi break-in operation.

@CW SEMI BREAK-IN SWITCH (p. 18)

Turns ON and OFF the CW semi break-in operation.

(42) EXTERNAL SPEAKER JACK (p. 6)

Connect a4~16 £2 speaker here, if required.

@GROUND TERMINAL (pgs. 5, 6)

To prevent electrical shocks, TVI, BCI and other prob-

lems, connect this terminal to ground.

1-3 MICROPHONE (HM-12)

<B> UP/DOWN SWITCHES

Changes the operating frequency or memory channel.

Push and hold either of these switches to change the

frequency or memory channel continuously.

©PTT SWITCH

Push to transmit.

<© UP/DOWN ON/OFF SWITCH

Prevents accidental changes of the [UP] and [DN]

switches.

CONTROL FUNCTIONS -j

1-4 FUNCTION DISPLAY

©©© © ©

IscANj'LSBUSBCW-NAMFM'lHiilFUNC^'MEMO'

jvfoa —ir

IV FO B.—'.S

SPLIT iL U

{TUNE |C|—/—#—#ZIC

[thIu], 1I.L -1 1-1- -f

®(5|) ©© © ©

©SCAN INDICATOR "SCAN" (p. 23)

Lights when scan is operating.

©MODE INDICATORS

Indicates the operating mode.

©RIT INDICATORS "RIT" (p. 21)

Lights when the RIT function is turned ON.

©FUNCTION INDICATOR "FUNC"

Lights when the [FUNC] switch is pushed.

©MEMORY INDICATOR "MEMO" (p. 22)

Lights when MEMORY mode is selected.

©MEMORY CHANNEL INDICATOR (p. 22)

Shows memory channel numbers.

©VFO INDICATORS "VFO A" "VFO B" (p. 14)

Indicate aVFO mode.

©FREQUENCY DISPLAY

Displays the operating frequency.

©THROUGH INDICATOR 'THRU" (p. 10)

Lights when the AH-3 HF AUTOMATIC ANTENNA

TUNER (optional) is bypassed.

©TUNING INDICATOR "TUNE" (p. 10)

Lights when the AH-3 HF AUTOMATIC ANTENNA

TUNER (optional) is being tuned.

©TUNING DIGIT INDICATORS "—"(pgs. 13, 14)

Points to the lowest digit changed when the MAIN

DIAL is rotated.

©SPLIT INDICATOR "SPLIT" (p. 21)

Lights when split operation is being used.

2INSTALLATION

2-1 UNPACKING 2-3 ANTENNA

After unpacking, immediately describe any damage to the

delivering carrier or dealer. Keep the shipping cartons. For

adescription and adiagram of accessory equipment in-

cluded with the IC-725, see UNPACKING on the inside

front cover.

2-2 MOUNTING THE TRANSCEIVER

Select alocation for the transceiver that allows adequate air

circulation and access to the front and rear panels. Do not

place in areas subject to extr-eme heat, cold, or vibrations,

or near TV sets, radios and electro-magnetic sources.

For mobile installations, an optional IC-MB5 MOBILE

MOUNTING BRACKET is available.. Select alocation

which can support the weight of the transceiver and does

not interfere with the operation of the vehicle.

•ADJUSTABLE ANGLES

The stand on the bottom of the IC-725 gives the

transceiver two selectable angles.

Select an antenna, such as a well-matched 50 12 antenna

and feedline. The transmission line should be acoaxial

cable. VSWR should be less than 1.5:1.

CAUTION: Protect your transceiver from lightning by

using alightning arrestor.

2-4 GROUNDING

To prevent electrical shocks, TVI, BCI and other problems,

ground the transceiver through the GROUND terminal on

the rear panel.

For best results, connect aheavy gauge wire or strap to a

long earth-sunk copper rod. Make the distance between the

GROUND terminal and ground as short as possible.

2-5 WIRING THE DC POWER CABLE

Insert arubber grommet to the DC power cable to prevent

shorting.

PL-259 CONNECTOR INSTALLATION

Solder

1)Slide the coupling ring over the coaxial cable.

2) Strip the cable as shown in the diagram, and soft

solder the center conductor.

3) Slide the connector body onto the cable and solder.

4) Screw the coupling ring onto the connector body.

1inch =25.4 mm

INSTALLATION 2

2-6 REAR PANEL CONNECTIONS

ANTENNA CONNECTOR

•Dipole antenna

•Yagi beam antenna

GROUND TERMINAL

The transceiver MUST

be grounded through

this terminal.

CI VREMOTE CONTROL JACK

Transceive function connec- Computer control connection

tion with another Icom. HF through aCT-1 7Cl-V LEVEL

transceiver or receiver. CONVERTER (optional).

CZ3

©yii io

PS-55 AC POWER SUPPLY

See p. 7for connections.

SP-7 EXTERNAL SPEAKER

Height and design

are matched with

the IC-725.

KEY JACK

Straight key or external electronic keyer

connection.

2-conductor phone plug can also be used.

ACC

SOCKETS

Seep. 11

ALC/SEND

JACKS

See p. 8

AH-3 HF AUTOMATIC ANTENNA TUNER

^See pgs. 9and 10 for details.

AH-2b

ANTENNA ELEMENT KIT

(sold separately)

3SYSTEM INTERCONNECTIONS

3-1 POWER SUPPLY CONNECTIONS

Use the PS-55 AC POWER SUPPLY (sold separately)

when operating the IC-725 with AC power. Refer to the

diagram below.

The [POWER] switch on the IC-725 front panel synchro-

nizes the PS-55 with the IC-725.

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 Vwhen you want to use anon-

Icom power supply.

•DC power cable polarity is correct,

red positive (+) terminal

black -» negative {—)terminal

•CONNECTING THE PS-55

IC-725

<2> )(3 [s=^n;

onoooO00

-l_r

The [POWER] switch synchronizes

the PS-55 AC POWER SUPPLY

with the IC-725.

PS-55

DC POWER

SOCKET

AC OUTLET

(u)

•CONNECTING ANON-ICOM AC POWER SUPPLY

IC-725

oDoOoO00

(J AC OUTLET

Use the supplied

DC power cable

Andere Handbücher für IC-725

Inhaltsverzeichnis

Andere Icom Transceiver Handbücher

Icom

Icom IC-746 Bedienungsanleitung

Icom

Icom IC-F6011-67 Bedienungsanleitung

Icom

Icom IC-F5062D Bedienungsanleitung

Icom

Icom IC-40S Bedienungsanleitung

Icom

Icom IC-910H Bedienungsanleitung

Icom

Icom IC-V80 Bedienungsanleitung

Icom

Icom SPH Series Bedienungsanleitung

Icom

Icom IC-F8101 Bedienungsanleitung

Icom

Icom IC-207H Bedienungsanleitung

Icom

Icom IC-F2000 series Bedienungsanleitung

Icom

Icom IC-775 Bedienungsanleitung

Icom

Icom Ic-V88 Bedienungsanleitung

Icom

Icom IC-215 Bedienungsanleitung

Icom

Icom IC-2GAT Bedienungsanleitung

Icom

Icom IC-201 Bedienungsanleitung

Icom

Icom D-STAR ID-31A; D-STAR ID-31E Bedienungsanleitung

Icom

Icom IC-281H Bedienungsanleitung

Icom

Icom IC-F5062 Bedienungsanleitung

Icom

Icom IC-F9011 Bedienungsanleitung

Icom

Icom IC-725 Bedienungsanleitung

Icom

Icom IC-M35 Bedienungsanleitung

Icom

Icom IC-M92D Bedienungsanleitung

Icom

Icom ID-800H Bedienungsanleitung

Icom

Icom IC-A210E Bedienungsanleitung

Beliebte Transceiver Handbücher anderer Marken

Yaesu

Yaesu FT-7B Bedienungsanleitung

Kenwood

Kenwood ProTalk TK-3201 Bedienungsanleitung

Mizuho

Mizuho MX-2 Produkthandbuch

Kenwood

Kenwood TK-3180 Bedienungs- und Wartungshandbuch

Blitz

Blitz MJ-398U Bedienungsanleitung

Utilicom

Utilicom LongRanger 2050 Bedienungsanleitung

Standart

Standart HX290UKA Bedienungsanleitung

Altronix

Altronix Pace1PTM Bedienungsanleitung

Kirisun

Kirisun PT2208 Bedienungsanleitung

ELECRAFT

ELECRAFT KX2 Bedienungsanleitung

Zodiac

Zodiac K3 Bedienungsanleitung

Assa Abloy

Assa Abloy SecureComm HKC GSM-WIFI U Bedienungsanleitung

Kenwood

Kenwood TK-2217 Bedienungsanleitung

Siemens

Siemens PSO 4000 Bedienungsanleitung

Kenwood

Kenwood TS-590SG Bedienungsanleitung

Midland

Midland G8E-BT Handbuch

ComNav

ComNav Mariner X2 Bedienungsanleitung

Uniden

Uniden UH820 Series Bedienungsanleitung