Icom IC-80AD Instruction Manual - Page 25

Setting squelch level, Monitor function

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BASIC OPERATION 4 N Setting squelch level 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. ± While pushing and holding [SQL], rotate [DIAL] to select the squelch level. • "LEVEL1" is loose squelch (for weak signals) and "LEVEL9" is tight squelch (for strong signals). • "AUTO" indicates automatic level adjustment by a noise pulse counting system. • "OPEN" indicates continuously open setting. (This selection is not available in DV mode.) [DIAL] Automatic squelch Maximum level N Monitor function 1 This function is used to listen to weak signals without disturb- 2 ing the squelch setting or to open the squelch manually even 3 when mute functions such as the tone squelch are in use. 4 ± Push and hold [SQL] to monitor the operating frequency. 5 • The 1st segment of the S-meter blinks. 6 7 8 9 10 The 1st segment blinks 11 12 The [SQL] key can be set to 'sticky' operation in FUNC set 13 mode (SET). See page 125 for details. 14 MENU ¶SET ¶FUNC ¶MONI (p. 125) 15 16 17 18 19 17

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17
4
BASIC OPERATION
1
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Setting squelch level
The squelch circuit mutes the received audio signal depend-
ing on the signal strength. The transceiver has 9 squelch lev-
els, a continuously open setting and an automatic squelch
setting.
While pushing and holding
[SQL]
, rotate
[DIAL]
to select
the squelch level.
• “LEVEL1” is loose squelch (for weak signals) and “LEVEL9” is
tight squelch (for strong signals).
• “AUTO” indicates automatic level adjustment by a noise pulse
counting system.
•
“OPEN” indicates continuously open setting. (This selection is
not available in DV mode.)
[DIAL]
Maximum level
Automatic squelch
Monitor function
This function is used to listen to weak signals without disturb-
ing the squelch setting or to open the squelch manually even
when mute functions such as the tone squelch are in use.
Push and hold
[SQL]
to monitor the operating frequency.
• The 1st segment of the S-meter blinks.
The 1st segment blinks
The
[SQL]
key can be set to ‘sticky’ operation in FUNC set
mode (SET). See page 125 for details.
MENU
SET
FUNC
MONI
(p. 125)