I Tone Scan - Icom IC-2820H Instruction Manual

I Tone scan

By monitoring a signal that is being operated with pocket
beep, tone or DTCS squelch function, you can determine the
tone frequency or DTCS code necessary to open a squ elch.
q Set the desired operating frequency or memory channel to
be checked for a tone frequency or code in the main band.
w Push [TONE•DTMF] several times to select the tone type,
tone squelch or DTCS, to be scanned.
• Either "T SQL" or "DTCS" appears
e Push the main band's [V/MHz•SCAN] for 1 sec. to start
the tone scan.
• To change the scanning direction, rotate [DIAL].
DUO BAND TRANSCEIVER
[V/MHz•SCAN]
MAIN T SQL
T X
M
During CTCSS frequency scan
NOTE: The decoded tone frequency is programmed tem-
porarily when a memory or call channel is selected. How-
ever, this will be cleared when the memory/call channel is
re-selected.
i2820
MAIN DTCS
T X
M
During DTCS code scan
DTMF MEMORY ENCODER
r When the CTCSS tone frequency or 3-digit DTCS code is
matched, the squelch opens and the tone frequency is
temporarily programmed into the selected condition such
as memory or call channel.
• The tone scan pauses when a CTCSS tone frequency or 3-digit
DTCS code is detected.
• The decoded CTCSS tone frequency or 3-digit DTCS code is
used for the tone encoder or tone encoder/decoder depending
on the selected tone condition or type in step w.
- "T SQL" : CTCSS tone encoder/decoder
- "DTCS" : DTCS tone encoder/decoder
t Push [V/MHz•SCAN] to stop the scan.
z Set the frequency or memory channel to be
T-SCAN
checked for a tone frequency.
x Selects the tone type to be scanned.
• Push [FUNC] then push; [
squelch; [
HIGH
c Push [FUNC] then [
the tone scan.
v When the tone frequency is matched, the
squelch opens and the tone frequency is pro-
grammed into the selected mode such as
memory or call channel.
b Push [
A(MW)] to stop the scan.
CLR
10
9(TSQL)] for tone
SIMP
4(DTCS)] for DTCS squelch.
2(T-SCAN)] to start
SCAN
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