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32
4
USING DIFFERENT OPERATING MODES
Band keys
[AF]
Tuning dial
[AM/FM]
BLANK
CH
VFOA
ANT
AGC
AMP
P.
SWR
ALC
Po
S
1
20
50
3
3
2
1
1.5
5
7
9
20
40
60
100%
1
1
S
88.5Hz
Tone SQL
FM
TSQ
SCN
4-5 Operating FM
Å
RECEIVING
➀
Push a band key to select the desired band.
➂
Push [AM/FM] to select FM.
• Pushing [AM/FM] toggles between AM and FM opera-
tion.
➂
Rotate [AF] to set audio to a comfortable listening
level.
➃
Rotate [SQL] to the point where audio noise is just
muted.
➄
Rotate the tuning dial to set the desired frequency.
• S-meter indicates received signal strength.
• The default tuning step for FM mode is 10 kHz; this can
be changed using tuning step program mode (p. 16).
■
TONE SQUELCH OPERATION
■
TONE SCAN
By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.
➀
Set tone squelch operation as in steps
➀
to
➁
above.
➁
Push [F4](
SCN
) to toggle the tone scan ON and
OFF.
• “Tone SQL SCAN” appears
➂
When a matched tone is found, a beep sounds and
the tone frequency is programmed into the selected
mode.
• Tone scan pauses when a tone frequency is detected.
Tone squelch operation is a method of communica-
tions using selective calling. Only received signals hav-
ing a matching tone will open the squelch. Before
communicating using tone squelch, all members of
your party must agree on the tone squelch frequency
to use.
➀
While in FM mode, push [MENU] to select menu set 1.
➁
Push [F4](
TSQ
) for 2 sec. to select the tone squelch
frequency set menu.
➂
Rotate the tuning dial to select the desired tone
squelch frequency.
➃
Push [F4](
TSQ
) momentarily to turn the tone
squelch function ON or OFF.
• “TSQL” appears in the display when the function is ON.
➄
Communicate in the usual manner.
• Available tone squelch frequencies
(unit: Hz)
91.5Hz
Tone SQL SCAN
TSQ
Display during tone scan
SCN
F1
F2
F3
F4
F5
Push [F1](
SCN
) to start/stop tone scan.
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
Summary of Contents for IC-746
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