Icom ID-31A Instruction Manual - Page 29

■ Setting squelch level, ■ Monitor function

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BASIC OPERATION 5 ■■Setting squelch level The squelch function mutes the noise or received audio signal, depending on the signal strength and the squelch control setting to cut off the noise output. ➥➥While holding down [SQL], rotate [DIAL] to select the squelch level. • W hile holding down [SQL], rotate [DIAL] one click to display 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 a continuously open setting. (This option is not selectable in the DV mode.) [DIAL] [SQL] Automatic squelch Maximum level ■■Monitor function 1 This function is used to listen to weak signals without disturb- 2 ing the squelch setting, or having to open the squelch manu- 3 ally even when mute functions such as the tone squelch are in use. 4 5 ➥➥Hold down [SQL] to monitor the operating frequency. • The 1st segment of the S-meter blinks. 6 7 8 9 10 [SQL] 11 12 The first segment blinks 13 14 15 16 T he [SQL] key can be set to 'sticky' operation in FUNC- TION menu. 17 18 MENU ➪ FUNCTION ➪ Monitor (p. 44) 19 20

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BASIC OPERATION
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■
Setting squelch level
The squelch function mutes the noise or received audio sig-
nal, depending on the signal strength and the squelch control
setting to cut off the noise output.
While holding down [SQL], rotate [DIAL] to select the
➥
squelch level.
• While holding down [SQL], rotate [DIAL] one click to display 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 a continuously open setting. (This option is not
selectable in the DV mode.)
■
Monitor function
This function is used to listen to weak signals without disturb-
ing the squelch setting, or having to open the squelch manu-
ally even when mute functions such as the tone squelch are
in use.
Hold down [SQL] to monitor the operating frequency.
➥
• The 1st segment of the S-meter blinks.
MENU
➪
FUNCTION
➪
Monitor
(p. 44)
The [SQL] key can be set to ‘sticky’ operation in FUNC
-
TION menu.
[SQL]
[DIAL]
Automatic squelch
Maximum level
[SQL]
The first segment blinks