Page 56
FT-450D O
PERATION
M
ANUAL
T
ONE
S
QUELCH
O
PERATION
You may also use “Tone Squelch” whereby your receiver will be kept silent until an incoming signal bearing a
matching CTCSS tone is received. Your receiver’s squelch will then open in response to the reception of the
required tone.
1. Press and hold the [
F
] button for one second to
enter the Menu mode again. The “
” icon
will appear on the display.
2. Rotate the [
DSP/SEL
] knob to select menu item
“
SQL TYP
”.
3. Press the [
DSP/SEL
] knob to enable adjustment of
this menu item. The “
” icon will be blinking.
4. Rotate the [
DSP/SEL
] knob to select the “
ENC
DEC
”.
5. Press the [
DSP/SEL
] knob. The “
” icon re-
turns to appear continuously.
6. Rotate the [
DSP/SEL
] knob to select menu item
“
TONE F
”, then press the [
DSP/SEL
] knob to en-
able adjustment of this menu item.
7. Rotate the [
DSP/SEL
] knob to select the desired
CTCSS tone to be used. A total of 50 standard
CTCSS tones are provided.
8. Press the [
DSP/SEL
] knob. The “
” icon re-
turns to appear continuously.
9. Press and hold the [
F
] button for one second to save
the new setting and return to normal operation.
When Tone Squelch is activated, the “
” icon
appears in the display.
FM M
ODE
O
PERATION
[
F
] button
[
DSP/SEL
] knob
CTCSS T
ONE
F
REQUENCY
(
Hz
)
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
251.4