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FT-450 O
PERATION
M
ANUAL
D
ISPLAY
I
NDICATIONS
Frequency Display
The operating frequency is displayed.
: This indicator appears during transmission.
: This indicator appears whenever the receiver squelch is open.
: This indicator appears when the optional ATU-450 Internal Automatic Antenna Tuner is
activated.
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: Displays the currently selected operating mode.
/
: Displays the current CTCSS operation while in FM mode.
/
: Displays the Repeater Shift Direction while in FM mode.
: This indicator appears whenever the VOX (automatic voice-actuated transmitter switching)
circuit is activated.
: This indicator appears while the voice recorder is recording the receiver audio. This indicator
blinks while the voice recorder is playing back the recorded audio.
: This indicator appears whenever the internal CW keyer is activated.
: This indicator appears whenever the CW break-in operation is activated.
: This indicator appears when the [
MAIN DIAL
] knob’s tuning rate is set to fast.
: This indicator appears when the [
MAIN DIAL
] knob is locked.
: This indicator appears whenever the Menu Mode is engaged.
: This indicator appears whenever the Clarifier function is activated.
: This indicator appears whenever Split-frequency operation is activated.
: This indicator appears when the alternate key functions of the six command buttons located on
the upper right corner of the front panel is activated.
Block Diagram Display
: Indicates the antenna status. When the antenna system became abnormality, this indicator will blink.
: Indicates the RF attenuator status (“ON” or “OFF”) selected for operation by the [
ATT/IPO
] button.
: Indicates that the front-end RF pre-amplifier is removed from the receiver circuit. The incoming signal
is fed direct to the first mixer.
: Indicates the 10 kHz Roofing Filter status. This is always turned on.
: Indicates the Noise Blanker status (“ON” or “OFF”).
: Indicates the AGC decay time.
