ICOM 288800 Manuale Utente
21
5
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
■ Setting squelch level
The squelch circuit mutes the received audio signal depend-
ing on the signal strength. The receiver has 9 squelch levels,
a continuously open setting and an automatic squelch setting.
ing on the signal strength. The receiver has 9 squelch levels,
a continuously open setting and an automatic squelch setting.
➥ While pushing and holding [SQL], rotate [DIAL] to select
the squelch level.
• “LEVEL 1” is loose squelch (for weak signals) and “LEVEL 9” is
tight squelch (for strong signals).
• “AUTO” indicates automatic level adjustment by a noise pulse
counting system.
• “OPEN” indicates continuously open setting.
■ Operating mode selection
Operating modes are determined by the modulation of the
radio signals. The transceiver has total 5 operating modes (A
band: FM, WFM and AM modes, B band FM, FM-N, AM and
DV modes). The mode selection is stored independently in
each band and memory channels.
radio signals. The transceiver has total 5 operating modes (A
band: FM, WFM and AM modes, B band FM, FM-N, AM and
DV modes). The mode selection is stored independently in
each band and memory channels.
Typically, AM mode is used for the AM broadcast stations
(0.495–1.620 MHz) and air band (118–136.995 MHz), and
WFM is used for FM broadcast stations (76–107.9 MHz).
WFM mode cannot be selected above 810 MHz bands for
USA version.
(0.495–1.620 MHz) and air band (118–136.995 MHz), and
WFM is used for FM broadcast stations (76–107.9 MHz).
WFM mode cannot be selected above 810 MHz bands for
USA version.
➥ Push and hold [REC/MODE] for 1 sec. several times to se-
lect the desired operating mode.
A
FM
FM
146 010
25
A
WFM
WFM
1
76 000
25
A
AM
AM
118 000
25
FM mode
WFM mode
AM mode
• Display example
A
MemoName
MemoName
µ
PRIO
PRIO WX
WX EMR
EMR
DTCS
DTCS
FM
FM
LOW
LOW
ATT
ATT
ATT
146 010
P SKIP
+DUP
+DUP
25
000
000
SQUELCH:LEVEL9
µ
000
000
P SKIP
SQUELCH:AUTO
µ
000
000
P SKIP
Automatic squelch
Maximum level
[DIAL]