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]
+DUP +DUP DTCS DTCS
FM FM PRIO PRIO WX WX EMR EMR
146 010
25
A
MemoName MemoName
P SKIP
µ 000 000
LOW LOW
ATT ATT
P SKIP
µ 000 000
SQUELCH:AUTO
Automatic squelch
P SKIP
µ
000 000
SQUELCH:LEVEL9
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 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.
➥ Push and hold [REC/MODE] for 1 sec. several times to se-
lect the desired operating mode.
BASIC OPERATION
• Display example
FM FM
146 010
25
A
FM mode
WFM WFM
176 000
25
A
WFM mode
AM AM
118 000
25
A
AM mode
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