One Scan; Oice Squelch Control Function - Icom IC-7851 Instruction Manual

12
SCANS
■ Tone scan
By monitoring a signal on an HF/6 m repeater input
frequency, the transceiver can determine the tone fre-
quency required to access the repeater.
q
Set the frequency or memory channel to be checked
for a tone frequency.
w
Push the Mode key [AM/FM]
the FM mode.
) for 1 second.
e
Hold down [TONE](
• The Tone frequency screen is displayed.
p](F) or [q](F) to check the repeater tone
r
Push [
frequency or tone squelch frequency.
t
Push [T-SCAN](F).
• The Tone scan starts.
• "SCAN" blinks while scanning.
y
When the tone frequency is detected, the tone scan
pauses.
• The tone frequency is set temporarily in the Tone mem-
ory. If desired, hold down [MW] for 1 second to overwrite
the memory to permanently store the tone frequency.
• The decoded tone frequency is used for the repeater
tone frequency or tone squelch frequency.
u
To stop the scan, push [T-SCAN](F).
• Hold down [DEF](F) for 1 second to select the default
frequency.
i
Push [EXIT/SET].
• Exits the Tone frequency screen.
■ 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 scan
pauses while the receiver checks the received signals
for voice components. (The squelch does not open
during this check.)
If a received signal includes voice components, and
the tone of the voice components changes within 1
second, the scan is stopped and the squelch opens.
If the received signal has no voice components, or the
tone of the voice components does not change within
1 second, the scan resumes.
➥
While in a phone mode (SSB, AM or FM), push
[VSC]() to turn the VSC (Voice Squelch Control)
function ON or OFF.
• "VSC" is displayed when the function is ON.
• The VSC function can be used in any scan.
• The VSC function resumes the scan on unmodu-
lated signals, regardless of whether the Scan Re-
sume function is set to ON or OFF.
several times to select
12-10
(≈) Multi-function keys
Mode keys
• While scanning
(≈) Multi-function keys
Mode keys
Appears
(F) Function keys
[EXIT/SET] [MAIN DIAL]
Blinks