Subaudible Tone Operation; Tone Squelch Operation - Icom COMMUNICATIONS RECEIVER IC-R3 Instruction Manual

8

SUBAUDIBLE TONE OPERATION

Tone squelch operation

◊ Operation
The tone squelch opens only when receiving a signal con-
taining a matching subaudible tone. You can silently wait for
calls from group members using the same tone in an ama-
teur band.
q Set the operating frequency in FM mode.
w Set the desired subaudible tone in set mode.
• See the following section for programming.
e Push [FUNC] + [(MODE) SET] momentarily to enter set
mode.
• Select a non-band scope screen in advance for color LCD.
r Rotate [DIAL] until "Tone Squelch" or "tSqL" appears.
• "tSqL" disappears after 1 sec. and "to" appears when color LCD is
OFF.
Tone Squelch: OFF
Tone Freq. : 88.5
Duplex : OFF
Offset Freq.: 0.600
Scan Resume : 2SEC
Tone function set
mode
28
Tone Squelch: OFF Tone Squelch: TSQL
Tone Freq. : 88.5 Tone Freq. :
Duplex : OFF Duplex
Offset Freq.: 0.600 Offset Freq.:
Scan Resume : 2SEC Scan Resume : 2SEC
Tone squelch OFF Tone squelch ON
t Push [↔] or rotate the tuning dial while pushing [FUNC] to
select "TSQL" (tone squelch).
y Push [(MODE) SET] to exit set mode and start the tone
squelch.
u When the received signal includes a matching tone, the
squelch opens and the signal can be heard.
• When the received signal's tone does not match, tone squelch
does not open, however, the S-indicator shows signal strength.
• To open the squelch manually, push and hold [SQL]. (default)
i To cancel the tone squelch, repeat steps e–y as de-
scribed above and select "OFF" in step t.
◊ Setting subaudible tones for tone squelch
operation
q Select VFO mode or desired memory channel to be pro-
grammed.
• Each operating band and each memory channel have indepen-
dent settings.
88.5
w Push [FUNC] + [(MODE) SET] momentarily to enter set
: OFF
mode.
0.600
• Select a non-band scope screen in advance for color LCD.
e Rotate [DIAL] until "Tone Freq." or "tonE" appears.
• "tonE" disappears after 1 sec. and "Ct" appears.
r Push [↔] or rotate the tuning dial while pushing [FUNC] to
select a subaudible tone.
t Push [(MODE) SET] to exit set mode.