![background image](http://html.mh-extra.com/html/icom/ic-a4/ic-a4_instruction-manual_612418007.webp)
3
2
PANEL DESCRIPTION
➥
When memory mode is selected, this switch sets the dis-
played channel as a scan lock-out channel when pushed
for 2 sec. (p. 8)
- “SKIP” appears on the display.
i
SQUELCH SWITCH [SQL]
➥
Push and hold to open the squelch. (p. 6)
➥
While pushing [SQL], push
[
Y
]/[
Z
]
to select the squelch
level. (p. 6)
- 9 squelch levels and squelch open are available.
o
FUNCTION DISPLAY
(p. 4)
!0
TRANSMIT INDICATOR
Lights red while transmitting.
!1
EXTERNAL DC POWER JACK [CHARGE]
Connect a 12 to 16 V DC power source using the optional
cables, CP-12L or OPC-254L, to charge the attached bat-
tery pack; or connect the BC-110V wall charger for charg-
ing.
CAUTION:
This connection is for charging ONLY.
Power to the transceiver must be turned OFF during
charging.
!2
SPEAKER/MICROPHONE
!3
EXTERNAL SPEAKER AND MICROPHONE JACKS
[SP/MIC]
➥
Connect an optional speaker-microphone or headset, if
desired. The internal microphone and speaker will not
function when either is connected. (See p. 18 for a list of
available options.)
➥
Side tone function is available when an optional head-
set adapter is connected. (pgs. 6, 18)
!4
ANTENNA CONNECTOR
(p. 1)
Connects the supplied antenna.
IC-A4#01 IM 01.12.5 5:14 PM Page 3 (1,1)