94BASIC OPERATION4 Receiving and transmittingq Rotate [VOL] clockwise to turn power ON.w UseSet the volume and squelch level.➥ Push [SQL•MONI], and push [√] to open the squelch.➥ Push [SQL•MONI] to stop “SQL” indicator blinking, thenrotate [VOL] to set the volume level.➥ Push [SQL•MONI], and push [∫]/[√] to set the squelchlevel.e Push [Y]/[Z] to select the desired channel.- When receiving a signal, the [TRANSMIT/RECEIVE] indicatorlights green while audio is emitted from the speaker.- Further adjustment of [VOL] may be necessary at this point.r Push [Hi/Lo• ] to select the output power if necessary.- “LOW” appears when low power is selected; “MID” appearswhen middle power is selected; no indication when high power isselected.- Choose low power to conserve battery power, choose highpower for longer distance communications.- Some channels are for low power only.t Push and hold [PTT] to transmit, then speak into themicrophone.- The [TRANSMIT/RECEIVE] indicator lights red whiletransmitting.- Channel 70 cannot be used for transmission.y Release [PTT] to receive.IMPORTANT: To maximize the readability of your trans-mitted signal, pause a few sec. after pushing [PTT], holdthe microphone 5 to 10 cm (2 to 4 inches) from your mouthand speak into the microphone at a normal voice level.NOTE: The transceiver has a power save function to con-serve the battery power. The power save function activatesautomatically when no signal is received for 5 sec.To prevent accidental prolonged transmission, etc., the IC-M90 has a time-out timer function. This timer cuts a trans-mission OFF after 5 min. of continuous transmission.CAUTION: Transmitting without an antenna maydamage the transceiver.MIC/SP q Power ONe Set volumeSpeakery Push to transmitu Release to receiver Set channelw Set the squelch levelw Set the squelch levele Set volumeMicrophonet Set output power

OPERATING RULES

I Attachments

battery pack

panel description

I Function display

I Channel selection

weather channels

I Receiving and transmitting

I Call channel programming

I Adjusting the squelch level

scan operation

I Setting tag channels

DUALWATCH/TRI-WATCH

I CTCSS and DTCS display

I SET mode programming

I SET mode items

set mode

I Battery cautions

I Optional battery case

I Optional battery chargers

battery charging

I Attachment

TROUBLESHOOTING

VHF MARINE CHANNEL LIST

SPECIFICATIONS

QUICK REFERENCE

OPTIONS

Icom IC-M90 Instruction Manual

IC-M90

instruction manual

safety training information

in case of emergency

explicit definitions

supplied accessories and attachments

d battery pack

PANEL DESCRIPTION

function display

BASIC OPERATION

receiving and transmitting

call channel programming

adjusting the squelch level

setting tag channels

land channel operation

set mode items

charging connections

optional battery chargers

optional swivel belt clip

troubleshooting