Preparation; Voice Squelch Control Function - Icom IC-R9500 Instruction Manual

■ Preparation

• Channels
For programmed scan:
Program scan edge frequencies into scan edge mem-
ory channels PxA and PxB.
For ∂ F scan:
Set the ∂F span (∂F scan range) in the scan screen.
For memory scan:
Program 2 or more memory channels except scan
edge memory channels.
For select memory scan:
Designate 2 or more memory channels as select mem-
ory channels. To designate the channel as a select
memory channel, choose a memory channel, then
push [F-3•SELECT] in the scan screen (memory
mode) or in the memory list screen.
• Scan resume ON/OFF
You can select the scan to resume or cancel when a
signal is detected. Scan resume ON/OFF must be set
before activating a scan. See p. 8-17 for ON/OFF set-
ting and scan resume condition details.

■ Voice squelch control function

[VSC]
• Scan speed
Scan speed can be adjusted by [SPEED] controller.
See p. 8-18 for details.
• Squelch condition
SCAN
PROGRAMMED
STARTS
WITH
The scan continues
until it is stopped
SQUELCH
manually, and does
OPEN
not pause even if it
detects signals.
Scan stops when a signal is detected.
If you set 'SCAN RESUME' to 'DELAY,' the
SQUELCH
scan pauses according to [DELAY] control
CLOSED
when detecting a signal, then resumes.
When a signal disappears while scan is
paused, scan resumes 2–20 sec. later.
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 a phone mode (FM, WFM, SSB, AM) is se-
lected, push [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.
8-3
SCANS
MEMORY SCAN
SCAN
Scan pauses
each channel when
the scan resume is
ON; not applicable
when OFF.
8
on