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Yaesu FT-450 User Manual

Yaesu FT-450
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Page 36 FT-450 OPERATION MANUAL
TRANSMITTER TIME-OUT TIMER
(
TOT
)
The “Time-Out Timer” (TOT) feature that is designed to force the transceiver into the “receive” mode after a
preset time period of continuous transmission (the default is “OFF”). This feature prevents your transceiver from
transmitting a “dead carrier” for a long period of time if the microphone PTT switch is accidentally locked in the
“TX” condition. The Time-Out Timer “switch-to-receive” time may be adjusted from 1 to 20 minutes, or Off via
Menu Item “TOT”.
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 the menu
item “EXT MNU”.
3. Press the
[
DSP/SEL
]
knob to enable adjustment
of this menu item. The “
” icon will be blink-
ing.
4. Rotate the
[
DSP/SEL
]
knob to select “ON” to ex-
pand the menu items.
5. Press the
[
DSP/SEL
]
knob. The “
” icon re-
turns to appear continuously.
6. Press and hold the
[
F
]
button for one second to
save the new setting and return to normal opera-
tion.
7. Press and hold the
[
F
]
button for one second to
enter the Menu mode again. The “ ” icon
will appear on the display.
8. Rotate the
[
DSP/SEL
]
knob to select the menu
item “TOT”.
9. Press the
[
DSP/SEL
]
knob to enable adjustment
of this menu item. The “ ” icon will be blink-
ing.
10. Rotate the
[
DSP/SEL
]
knob to select the desired
“Maximum TX” time. Available selections are 1
minute through 20 minutes or off.
Press the
[
HOME/RCL
]
button to reset the TOT
time to the factory default.
11. Press the
[
DSP/SEL
]
knob. The “ ” icon re-
turns to appear continuously.
12. Press and hold the
[
F
]
button for one second to
save the new setting and return to normal opera-
tion.
[
HOME/RCL
]
button
[
F
]
button
[
DSP/SEL
]
knob
SSB/AM MODE TRANSMISSION

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Yaesu FT-450 Specifications

General IconGeneral
Impedance50 ohms
Supply Voltage13.8 V DC
Supply Voltage Tolerance±15%
Image Rejection70 dB or better
Frequency Range Receive30 kHz - 56 MHz
ModesSSB, CW, AM, FM
AM Power Output25 W
Weight3.6 kg
Receiver Sensitivity SSB0.2 µV (12 dB SINAD)

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