Icom IC-E90 - CTCSSDTCS Deviation Adjustments

■ Setting the squelch level
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BASIC OPERATION
The squelch circuit mutes the received
audio signal depending on the signal
strength. The transceiver has 9 squelch
levels, a continuously open setting and
an automatic squelch setting.
DSetting the squelch level
q While pushing and holding [SQL], ro-
tate [DIAL] one-click to display the
current squelch level.
w Rotate [DIAL] successively to adjust
the squelch level.
• “LEVEL1” is loose squelch and
“LEVEL9” is tight squelch.
• “AUTO” indicates automatic level adjust-
ment with a noise pulse count system.
e Release [SQL] to return to the previ-
ous indication.
[Squelch level indication]
DMonitor function
This function is used to listen to weak
signals or to open the tone squelch
manually.
➥ Push and hold [SQL] to monitor the
operating frequency.
The [SQL] switch can be set as a
monitor ON/OFF switch in set mode.
(p. 60)
[SQL]
Blinks while monitoring.
FM SKIPP
rr
BASIC OPERATION
[SQL]
[DIAL]
Indication
Squelch level
Open
Automatic (default)
Level 1 (loose)
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9 (tight)