Tone/dtcs squelch operation – Icom IC-R1500 User Manual
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8
POCKET BEEP AND TONE SQUELCH
■
Tone/DTCS squelch operation
The tone or DTCS squelch opens only when receiving a sig-
nal with the same pre-programmed subaudible tone or DTCS
code. You can silently wait for a signal using the same tone.
q
Set the operating frequency in FM mode.
w
Program the CTCSS tone frequency or DTCS code in set
mode. (p. 31)
e
Push and hold [MONI•T/T-SCAN] for 1 sec. to enter
tone squelch selection mode, then rotate [DIAL] until “ ”
or “
” appears in the function display.
r
When a signal with a matching tone is received, the
squelch opens and the receiver emits audio.
• When the received signal includes an unmatched tone, the
squelch does not open. However, the S-meter indicator shows
the received signal strength.
• To open the squelch manually, push [MONI•T/T-SCAN].
t
To cancel the tone squelch or DTCS squelch function, re-
peat steps
e
until “oFF” appears, then push any key.
D
Reverse action for tone or DTCS squelch
➥
Enter tone squelch selection mode as described in steps
q
to
e
as shown left, then rotate [DIAL] to select either
reverse action for the tone or DTCS squelch as below.
for DTCS
for Tone squelch
Tone OFF setting
DTCS setting
Tone squelch setting
How does the Reverse action work?
When the reverse action is selected for either the tone
squelch, “tSqL-r,” or DTCS squelch, “dtCS-r,” and a signal
with the matched tone (or DTCS) is received, the squelch
closes, and the receiver mutes the signal. You can listen to
signals with any tone other than the specified one.