Operating Fm - Icom IC-746 Instruction Manual

4
USING DIFFERENT OPERATING MODES

4-5 Operating FM

Å RECEIVING
[AF]
TONE SQUELCH OPERATION
1
ANT
1 3 5 7 9
S
Po
20 50
ALC
SWR
1 1.5 2 3
AMP
P.
1
TONE SCAN
Display during tone scan
F1 F2
Push [F1]( ) to start/stop tone scan.
32
Band keys
[AM/FM] Tuning dial
FM
20 40 60
BLANK
100% VFOA
AGC
S
F3 F4
Push a band key to select the desired band.
Push [AM/FM] to select FM.
• Pushing [AM/FM] toggles between AM and FM opera-
tion.
Rotate [AF] to set audio to a comfortable listening
level.
Rotate [SQL] to the point where audio noise is just
muted.
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 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.
While in FM mode, push [MENU] to select menu set 1.
Push [F4](
frequency set menu.
Rotate the tuning dial to select the desired tone
CH
squelch frequency.
Push [F4](
squelch function ON or OFF.
• "TSQL" appears in the display when the function is ON.
Communicate in the usual manner.
• Available tone squelch frequencies
67.0 79.7
69.3 82.5
71.9 85.4
74.4 88.5
77.0 91.5
By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.
Set tone squelch operation as in steps
above.
Push [F4](
OFF.
• "Tone SQL SCAN" appears
When a matched tone is found, a beep sounds and
the tone frequency is programmed into the selected
F5
mode.
• Tone scan pauses when a tone frequency is detected.
) for 2 sec. to select the tone squelch
) momentarily to turn the tone
94.8 110.9 131.8 156.7 171.3
97.4 114.8 136.5 159.8 173.8
100.0 118.8 141.3 162.2 177.3
103.5 123.0 146.2 165.5 179.9
107.2 127.3 151.4 167.9 183.5
) to toggle the tone scan ON and
(unit: Hz)
186.2 203.5 229.1
189.9 206.5 233.6
192.8 210.7 241.8
196.6 218.1 250.3
199.5 225.7 254.1
to