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Page 55FT-450 OPERATION MANUAL
FM MODE OPERATION
TONE SEARCH SCANNING
In operating situations where you don’t know the CTCSS tone being used by another station or stations, you can
command the radio to listen to the incoming signal and scan in search of the tone being used. Two things must
be remembered in this regard:
You must be sure that your repeater uses the same tone type (CTCSS).
Some repeaters do not pass the CTCSS tone; you may have to listen to the station(s) transmitting on the
repeater uplink (input) frequency in order to allow Tone Search Scanning to work.
To scan for the tone in use:
1. Set the radio up for CTCSS operation (see the
previous discussion). The “ ” icon will
appear on the display.
2. Press and hold the
[
F
]
button for one second to
enter the Menu mode. The “ ” icon will ap-
pear on the display.
3. Rotate the
[
DSP/SEL
]
knob to select the menu
item “TONE F”.
4. Press the
[
DSP/SEL
]
knob to enable adjustment
of the selected Menu Item. The “ ” icon will
be blinking.
5. Press the
[
PMS/SCAN
]
button to start scanning
for the incoming CTCSS tone.
6. When the radio detects the correct tone, it will
halt on that tone, and audio will be allowed to pass.
7. Press the
[
DSP/SEL
]
knob to lock in that tone.
8. Press and hold the
[
F
]
button for one second to
return to normal operation.
NOTE:
If the Tone Scan feature does not detect a tone, it will
continue to scan indefinitely. When this happens, it
may be that the other station is not sending any tone.
You can press the
[
PMS/SCAN
]
button to halt the
scan at any time.
[
PMS/SCAN
]
button
[
F
]
button
[
DSP/SEL
]
knob
57


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