172 INSTALLATION AND CONNECTIONS Linear amplifier connectionsCONNECTING THE IC-PW1Turn OFF the transceiver’s antenna tuner while tuning the IC-PW1’s tuner.CONNECTING A NON-ICOM LINEAR AMPLIFIERR WARNING:Set the transceiver output power and linearamplifier ALC output level referring to the linearamplifier instruction manual.The ALC input level must be in the range 0 V to–4 V, and the transceiver does not accept pos-itive voltage. Non-matched ALC and RF powersettings could cause a fire or ruin the linearamplifier.The specifications for the SEND relay are16 V/DC 0.5 A. If this level is exceeded, a largeexternal relay must be used. External antenna tuner connectionCONNECTING THE AH-4The AH-4 must be connected to [ANT1].To anantenna ACC(1)ANTANT1ACC(2)INPUT1REMOTEEXCITER1 1&2GNDGNDIC-PW1AC outlet(Non-European versions: 100—120/220—240 VEuropean version : 230 V)Ground TransceiverREMOTERemote control cable (supplied with the IC-PW1)ACC cable (supplied with the IC-PW1)Be sure to connect the cableto the 7-pin ACC(2) jack.Coaxial cable(supplied with the IC-PW1)Coaxial cable (from AH-4)ANT1TransceiverGround AH-4Control cableLong wire or optional AH-2b50 Ω coaxial cableNon-Icom linear amplifier SENDALCTo anantennaRF OUTPUT RF INPUTALCSENDANT1TransceiverUse the [ANT1] connector when connecting a linearamplifier.

instruction manual

quick reference guide

PANEL DESCRIPTION

Front panel

rear panel

d data socket

lcd display

Microphone (HM-36)

CONNECTIONS

Advanced connections

Power supply connections

Linear ampliﬁer connections

BASIC OPERATION

Selecting VFO/memory mode

Frequency setting

d band edge warning beep

Operating mode selection

Basic transmit operation

RECEIVE AND TRANSMIT

d about cw reverse mode

Electronic keyer functions

d memory keyer send menu

d editing a memory keyer

d contest number set mode

rise time

Noise blanker

rtty functions

d rtty decoder

rtty shift

Noise reduction

VOX function

d tone squelch operation

d dtcs operation

Split frequency operation

Memory channels

set 
 mode

Icom IC-746PRO Instruction Manual

I Front panel

I Rear panel

I LCD display

I Multi function switches

PANEL DESCRIPTION ........... 1

I Unpacking

I Required connections

I Advanced connections

I Power supply connections

I Linear ampliﬁer connections

I Initial settings

I Selecting an operating band

I Selecting VFO/memory mode

I Frequency setting

I Operating mode selection

I Squelch and receive (RF sensitivity

I Basic transmit operation

I Operating SSB

I Operating CW

I Electronic keyer functions

I Operating RTTY (FSK)

I RTTY functions

I Operating AM

I Operating FM

I Repeater operation

I Simple band scope

I Preamp/Attenuator

I AGC function

I IF ﬁlter selection

I IF (DSP) ﬁlter shape

I Twin PBT operation

I Noise reduction

I Voice squelch control function

I VOX function

I Break-in function

I ∂TX function

I Speech compressor

I Split frequency operation

I Quick split function

I Measuring SWR

I Memory channels

I Programming a memory

I Selecting the call channel

I Frequency transferring

I Programming scan edges

I Assigning memory names

memo pads

I Scan types

I Programmed scan/Fine programmed scan

I Memory scan operation

I ∂F scan operation and Fine ∂F scan

I Tone scan/DTCS code scan operation

I Antenna connection and selection

I Antenna tuner operation

I Optional external tuner operation

I Connections

I Packet (AFSK) operation

I Adjusting the TNC output level

I General set mode

I Tone control set mode

I Opening the transceiver's case

I Trouble shooting

I Fuse replacement

I Resetting the CPU

I Remote jack (CI-V) information

SPECIFICATIONS

OPTIONS

IC-746PRO

specifications