213INSTALLATION AND CONNECTIONS UnpackingAfter unpacking, immediately report any damage to thedelivering carrier or dealer. Keep the shipping cartons.For a description and a diagram of accessory equip-ment included with the IC-746PRO, see ‘Supplied ac-cessories’ on p. ii of this manual. Selecting a locationSelect a location for the transceiver that allows ade-quate air circulation, free from extreme heat, cold, orvibrations, and away from TV sets, TV antenna ele-ments, radios and other electro magnetic sources.The base of the transceiver has an adjustable standfor desktop use. Set the stand to one of two angles de-pending on your operating conditions. GroundingTo prevent electrical shock, television interference(TVI), broadcast interference (BCI) and other prob-lems, ground the transceiver through the GROUNDterminal on the rear panel.For best results, connect a heavy gauge wire or strapto a long earth-sunk copper rod. Make the distance be-tween the [GND] terminal and ground as short as pos-sible.R WARNING: NEVER connect the [GND]terminal to a gas or electric pipe, since the connec-tion could cause an explosion or electric shock. Antenna connectionFor radio communications, the antenna is of critical im-portance, along with output power and sensitivity. Se-lect antenna(s), such as a well-matched 50 Ω antenna,and feedline. 1.5:1 or better of Voltage Standing WaveRatio (VSWR) is recommended for your desired band.Of course, the transmission line should be a coaxialcable.When using 1 antenna, use the [ANT1] connector.CAUTION: Protect your transceiver from lightningby using a lightning arrestor.Antenna SWREach antenna is tuned for a specified frequencyrange and SWR may be increased out-of-range.When the SWR is higher than approx. 2.0:1, thetransceiver’s power drops to protect the final transis-tor. In this case, an antenna tuner is useful to matchthe transceiver and antenna. Low SWR allows fullpower for transmitting even when using the antennatuner. The IC-746PRO has an SWR meter to moni-tor the antenna SWR continuously.PL-259 CONNECTOR INSTALLATION EXAMPLE30 mm ≈ 9⁄8 in 10 mm ≈ 3⁄8 in 1–2 mm ≈ 1⁄16 in30 mm10 mm (soft solder)10 mm1–2 mmsolder solderSoftsolderCoupling ringSlide the coupling ringdown. Strip the cablejacket and soft solder.Slide the connectorbody on and solder it.Screw the couplingring onto theconnector body.Strip the cable asshown at left. Soft sol-der the center con-ductor.qwer

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