Icom IC-M504 - Manual (Page 14)

8
3
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 BU US SY 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 LO OC C” appears when the receive Attenuator function is in use.
y Push [H/L] to select the output power if necessary.
• “2 25 5W W” or “1 1W 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 TX 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.
t
Microphone q y
r e w w
i u
r e y