I Setting Squelch Level; I Operating Mode Selection - Icom IC-91A Instruction Manual

I 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.
➥ 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.
[DIAL]
146 010
25
µ 000 000
µ 000 000
Automatic squelch
µ
000 000
Maximum level

I 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 for
each band and memory channel.
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 for USA ver-
sion.
➥ Push and hold [MODE](REC) for 1 sec. several times to
select the desired operating mode.
BASIC OPERATION
• Display example
146 010
25
FM mode
176 000
25
WFM mode
118 000
25
AM mode
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
21