ICOM iM504 User Manual

BASIC OPERATION

■ Receiving and transmitting

CAUTION:

Transmitting without an antenna may dam-

age the transceiver.

q Push [POWER] to turn power ON.
w Set the audio and squelch levels.

➥ Rotate [SQL] fully counterclockwise in advance.

➥ Rotate [VOL] to adjust the audio output level.

➥ Rotate [SQL] clockwise until the noise disappears.

e While pushing and holding [H/L], push [CH/WX•DUAL•

U/I/C] to change the channel group. (p. 7)

r Rotate [DIAL] to select the desired channel. (pgs. 6, 7)

• When receiving a signal, “B

Y” appears and audio is emitted

from the speaker.

• Further adjustment of [VOL] may be necessary.

t Push [LO/DX•IC•SCRM] to turn the receive Attenuator

function ON or OFF, if necessary.

• “L

C” appears when the receive Attenuator function is in use.

y Push [H/L] to select the output power if necessary.

• “2

W” or “1

W” appears when high or low power is selected, re-

spectively.

• Choose low power for short range communications, choose high

power for longer distance communications.

• Some channels are for low power only.

u Push and hold [PTT] to transmit, then speak into the mi-

crophone.

• “T

X” appears.

• Channel 70 cannot be used for transmission other than DSC.

i Release [PTT] to receive.

Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-
NOT be lawfully used by the general public in U.S.A. wa-
ters.

IMPORTANT: To maximize the readability of your trans-
mitted signal, pause a few sec. after pushing [PTT], hold
the microphone 2 to 4 inches (5 to 10 cm) from your mouth
and speak into the microphone at a normal voice level.

Microphone

e y