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Page 23FT-950 OPERATING MANUAL
FRONT PANEL CONTROLS & SWITCHES
[
R.FLT
]
(
R
OOFING
F
ILTER
)
Switch
This button selects the bandwidth of the receiver first
IF Roofing Filter. Available selections are 3 kHz, 6
kHz, 15 kHz, or Auto. The selected bandwidth appears
in the FLT column of the Block Diagram Display on
the display.
ADVICE:
Because the roofing filter is in the first IF, the protec-
tion it provides against interference is quite significant.
When set to AUTO, SSB bandwidth is 6 kHz, CW is 3
kHz, FM and RTTY are 15 kHz. On a crowded SSB
band, however, you may wish to select the 3 kHz filter,
for the maximum possible interference rejection.
[
NB
]
Switch
This button turns the IF Noise Blanker on and off.
Press this button momentarily to reduce short-duration
pulse noise; the “ ” icon will appear in the display.
Press and hold this button in for one second to reduce
longer-duration man-made pulse noises; the “
icon will blink for three seconds, then will appear con-
tinuously in the display.
Press this button again to disable the noise blanker;
the “ ” icon will disappear.
[
AF GAIN
] [
RF GAIN
]
Knobs
[
AF GAIN
]
Knob
The inner
[
AF GAIN
]
knob sets the receivers audio
volume level. Typically, you will operate with this con-
trol set between the 9 o’clock and 10 o’clock posi-
tions.
[
RF GAIN
]
Knob
The outer
[
RF GAIN
]
knob is the receivers RF gain
control, which adjusts the gain of the receivers RF
and IF amplifier stages. This control is normally left in
the fully clockwise position.
[
RX CLAR
]
Switch
Pressing this button activates the RX Clarifier. This
will allow you to temporarily adjust the receiving fre-
quency up to ±9.999 kHz with the
[
CLAR/VFO-B
]
knob. Press this button once more to return the receiver
to the original frequency; the Clarifier offset will be
remembered, in case you want to use it again. To can-
cel the Clarifier offset, press the
[
CLEAR
]
button.
[
TX CLAR
]
Switch
Pressing this button activates the TX Clarifier, to al-
low offsetting the transmit frequency temporarily. Press
this button once more to return the transmitter to the
original frequency; the Clarifier offset will be remem-
bered, though, in case you want to use it again. To can-
cel the Clarifier offset, press the
[
CLEAR
]
button.
[
CLEAR
]
Switch
Pressing this button clears out any frequency offset you
have programmed into the Clarifier register (thereby
setting the offset to “Zero”).
[(
VFO-B
)
RX
]
Indicator/Switch
This button switches the receiving frequency to VFO-
B, the green LED imbedded within the button will light
up. Pressing this button again will return the receiving
frequency to VFO-A, and the imbedded green LED
will turn off.
[(
VFO-B
)
TX
]
Indicator/Switch
This button transfers control of the transmit frequency/
mode to VFO-B, and the red LED in the button will
light up. Pressing this button again will transfer fre-
quency/mode control back to the VFO-A side, and the
red LED imbedded within this button will turn off.
[
BAND
]
Switch
Pressing this button allows you to select the operating
band (Amateur bands) by turning the
[
CLAR/VFO-
B
]
knob.
[
GRP
]
Switch
Pressing this button allows you to select the memory
group by turning the
[
CLAR/VFO-B
]
knob.
[
MHz
]
Switch
Pressing this button allows you to tune the VFO fre-
quency down or up in 1 MHz increments, using the
[
CLAR/VFO-B
]
knob.
[
CLAR/VFO-B
]
Knob
This knob usually tunes the Clarifier offset frequency
up to ±9.999 kHz. Additionally, it is used to adjust the
functions selected with five buttons located around the
knob.
[
MCH
]
Switch
Pressing this button allows you to select the memory
channel using the
[
CLAR/VFO-B
]
knob.
EFFECT
Rotate the
[
CLAR/VFO-B
]
knob to adjust
the VFO-B frequency, in the same step as
the Main Tuning Dial knob. The Frequency
Display will be changed to show the VFO-
B frequency.
Rotate the
[
CLAR/VFO-B
]
knob to change
the amateur band selection.
Rotate the
[
CLAR/VFO-B
]
knob to select
the memory group.
Rotate the
[
CLAR/VFO-B
]
knob to tune the
VFO frequency in 1 MHz step.
Rotate the
[
CLAR/VFO-B
]
knob to select
the memory channel.
FUNCTION
SWITCH
[(
VFO-B
)
RX
]
[
BAND
]
[
GRP
]
[
MHz
]
[
MCH
]
25


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