69
8
SCANS
2001 NEW 2001 NEW
■ Voice squelch control function
This function is useful when you don’t want unmodu-
lated signals pausing or cancelling a scan. When the
voice squelch control function is activated, the receiver
checks received signals for voice components.
If a receiver signal includes voice components, and the
tone of the voice components changes within 1 sec.,
scan pauses (or stops). If the received signal includes
no voice components or the tone of the voice compo-
nents does not change within 1 sec., scan resumes.
➥ While M2 is selected with [MENU], push [F5 VSC]
to switch the VSC (Voice Squelch Control) function
ON and OFF.
•“VSC” appears when the function is activated.
• The VSC function activates for any scan.
•The VSC function resumes the scan on unmodu-
lated signals, regardless of whether the scan re-
sume condition is set to ON or OFF.
■ Scan set mode
When the squelch is open, scan continues until it is
stopped manually— it does not pause on detected sig-
nals. When squelch is closed, scan stops when de-
tecting a signal, then resumes according to the scan
resume condition. Scan speed and the scan resume
condition can be set using the scan set mode.
q Push[MENU] to select M2.
w Push [F1 SCN] to select scan menu.
e Push [F5 SET] to select scan set mode.
r Push [F1 ≤] or [F2 ≥] to select SCAN Speed
item.
t Rotate the tuning dial to select scan speed from
high and low.
•“HIGH” : scan is faster
•“LOW” : scan is slower
y Push [F2 ≥] to select SCAN Resume item.
u Rotate the tuning dial to select scan resume func-
tion from ON and OFF.
•“ON” : when detecting a signal, scan pauses for
10 sec., then resumes. When a signal disap-
pears, scan resumes 2 sec. later.
•“OFF” : when detecting a signal, cancels scanning.
i Push [MENU] to return to scan menu.
F 1
F
2F
3
F
4
F
5
F 1
F 2 F 3 F 4 F 5
F 1
F
2F
3
F
4
F
5
F 1
F
2F
3
F
4
F
5
SCN
MEM
SWR
TCN
VSC
PRO
∂
F
FIN
SPN
SET
∂
F:±1Ok
Push [F1]
Push [F5]
SCAN
Speed
HIGH
1
Push [F1] or [F2]
SCAN
Resume
ON
2
F 1
F 2 F 3 F 4 F 5
SCN
MEM
SWR
TCN
VSC
Push [F5] to turn the VSC function ON and OFF.
VSC indicator
IC-7400.qxd 02.4.2 11:35 Page 69
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