Icom IC-7700 Instruction Manual - Page 137

Voice squelch control function, Scan set mode

Page 137 highlights

SCANS 9 ■ Voice squelch control function This function is useful when you don't want unmodulated signals pausing or cancelling a scan. When the voice squelch control function is activated, the transceiver checks received signals for voice components. If a received 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 components does not change within 1 sec., scan resumes. VSC ➥ While a phone mode (SSB, AM or FM) is selected, push [VSC] (MF7) 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 resume condition is set to ON or OFF. ■ Scan set mode ∫ √ DEF EXIT/SET Main dial F-1 F-2 F-4 When the squelch is open, scan continues until it is stopped manually- it does not pause on detected signals. When squelch is closed, scan stops when detecting 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 [SCAN] F-5 to select scan screen. w Push [SET] F-7 to select scan set mode. e Push [Y] F-1 or [Z] F-2 to select the desired item. r Rotate the main dial to select the desired condition. • Push and hold [DEF] F-4 for 1 sec. to select the default setting. t Push EXIT/SET to return to scan menu. Scan Speed Select the desired scan speed from high and low. Scan Resume Set the scan resume function ON and OFF. HIGH • HIGH : scan is faster • LOW : scan is slower ON • ON : When detecting a signal, scan pauses for 10 sec., then resumes. When a signal disappears, scan resumes 2 sec. later. • OFF : When detecting a signal, cancels scanning. 9-3

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9-3
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 trans-
ceiver checks received signals for voice components.
If a received 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
components does not change within 1 sec., scan re-
sumes.
While a phone mode (SSB, AM or FM) is selected,
push [VSC]
(MF7)
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 [SCAN]
to select scan screen.
w
Push [SET]
to select scan set mode.
e
Push [
Y
]
or [
Z
]
to select the desired item.
r
Rotate the main dial to select the desired condition.
• Push and hold [DEF]
for 1 sec. to select the default
setting.
t
Push
to return to scan menu.
EXIT/SET
F-4
F-2
F-1
F-7
F-5
Main dial
F-4
DEF
F-1
F-2
EXIT/SET
VSC
9
SCANS
Select the desired scan speed from high and low.
• HIGH
: scan is faster
• LOW
: scan is slower
Scan
Speed
HIGH
Set the scan resume function 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.
Scan
Resume
ON