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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. (pp. 6, 7)
• When receiving a signal, “
BUSY
” 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.
• “
LOC
” appears when the receive Attenuator function is in use.
y
Push
[H/L]
to select the output power if necessary.
• “
25W
” or “
1W
” 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.
• “
TX
” 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
Summary of Contents for IC-M504
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