Icom IC-R20 instruction manual Tone scan, Push 4 T-SCANfor 1 sec. to start the tone scan

■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 squelch.

qSet the frequency to be checked for a tone frequency or

code.

wTurn the desired tone type, tone squelch or DTCS, ON by holding [7 TONE] with turning [R-DIAL].

•One of “TSQL” or “DTCS” appears.

•Even when the pocket beep function is activated, the function is cancelled when starts the tone scan.

ePush [4 T-SCAN]for 1 sec. to start the tone scan.

• To change the scanning direction, rotate [R-DIAL].

Tone squelch scan

[R-DIAL]

188 0

√

DTCS scan

T-SCAN

4013

TONE

7 √

COMFORTABLE RECEIVING 9

rWhen the CTCSS tone frequency or 3-digit DTCS code is matched, the squelch opens and the tone frequency or code is temporarily programmed into the selected condi- tion, such as memory channel.

•The tone scan pauses when a CTCSS tone frequency or 3-digit DTCS code is detected.

☞NOTE: The decoded tone frequency or code is pro- grammed temporarily when a memory channel is se- lected. However, this will be cleared when the memory channel is re-selected.

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✔For your convenient!

Even if no tone type is selected, either tone squelch or DTCS, pushing [4 T-SCAN]for 1 sec. will also start tone scan. In this case, the tone scan searching for tone squelch frequency only.

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