Key Jack - Yaesu FT-950 Operating Manual

F
RONT

KEY Jack

This 1/4-inch, 3-contact jack accepts a CW key or keyer
paddles (for the built-in electronic keyer), or output
from an external electronic keyer. Pinout is shown on
page 15. Key up voltage is +3.3 V DC, and key down
current is 0.3 mA. This jack may be configured for
keyer, "Bug", "straight key", or computer keying in-
terface operation via Menu item "037 A1A F-TYPE
(see page 111). There is another jack with the same
name on the rear panel, and it may be configured inde-
pendently for Internal Keyer or pseudo-straight-key
operation.
N :
OTE
You cannot use a 2-contact plug in this jack (to do so
produces a constant "key down" condition).
[ MONI ] Knob
This knob adjusts the audio level of the transmit moni-
tor during transmission (relative to the [ AF GAIN ]
knob), when activated by the [ MONI ] button.
[ SQL ] Knob
This knob sets the signal level threshold, below which
the receiver audio is muted, in all modes. It is very
useful during local rag-chews, to eliminate noise be-
tween incoming transmissions. This control is normally
kept fully counter-clockwise (off), except when scan-
ning and during FM operation.
[ SHIFT ] Switch
Pressing this button allows you to move the IF DSP
Bandwidth higher or lower, using the [ SELECT ] knob.
While activated, the LED inside this button glows or-
ange.
[ NOTCH ] Switch
Pressing this button allows you to adjust the center fre-
quency of the IF Notch filter using the [ SELECT ]
knob. While activated, the LED inside this button glows
orange. Press the [ SELECT ] knob briefly to toggle
the IF Notch filter on/off.
[ WIDTH ] Switch
Pressing this button allows you to adjust the overall
bandwidth of the IF DSP filter using the [ SELECT ]
knob. While activated, the LED inside this button glows
orange.
[ μ-TUNE ] Switch
Pressing this button allows you to adjust the center fre-
quency of the μ-Tuning filter passband using the [ SE-
LECT ] knob, when the optional RF μTuning Kit is
connected. While activated, the LED inside this but-
ton glows orange. Press the [ SELECT ] knob briefly
to toggle the μ-Tuning function on/off.
FT-950 O
PERATING
P
ANEL
037 A1A F-TYPE" 037 A1A F-TYPE 037 A1A F-TYPE 037 A1A F-TYPE
M
ANUAL
C
ONTROLS
[ CONT ] Switch
Pressing this button allows you to select the DSP Con-
tour filter response using the [ SELECT ] knob. While
activated, the LED inside this button glows orange.
Press the [ SELECT ] knob briefly to toggle the IF
Contour filter on/off.
[ CLEAR ] Switch
Pressing this button will reset to factory default the
functions, which are selected with the five buttons at
the left of this button.
[ SELECT ] Knob
This knob is used to adjust the status of the functions
selected by the five buttons located above the knob.
F
UNCTION
S
WITCH
[ SHIFT ] Rotate the [ SELECT ] knob to move the pass-
band of the IF DSP filter by 20 Hz steps. The
total adjustment range is ±1 kHz. The position
of the passband can be observed on the dis-
play.
[ WIDTH ] Rotate the [ SELECT ] knob to set the overall
bandwidth of the IF DSP filter. Counter-clock-
wise rotation reduces the bandwidth, while
clockwise rotation increases the bandwidth.
The current bandwidth can be observed on the
display.
[ CONT ] Press the [ SELECT ] knob to turn the CON-
TOUR filter on and off. Rotate the [ SELECT ]
knob to adjust the CONTOUR filter response.
The peak position of the CONTOUR filter can
be observed on the display.
[ NOTCH ] Press the [ SELECT ] knob to turn the IF NOTCH
filter on and off. Rotate the [ SELECT ] knob to
adjust the center frequency of the IF NOTCH
filter. The null position of the IF NOTCH filter
can be observed on the display.
[ μ-TUNE ] Press the [ SELECT ] knob to turn the optional
RF μTuning Kit on and off. Rotate the [ SE-
LECT ] knob to adjust the center frequency of
the μ-Tuning filter. The peak position of the μ-
Tuning filter can be observed on the Tuning
Offset Indicator field of the display.
The [ SELECT ] knob is also used to select the Menu
item when the Menu mode is engaged.
Press and hold the [ SELECT ] knob for one second to
activate the optional Voice Memory feature for the SSB/
AM/FM modes, or the Contest Keyer for the CW mode.
See page 64 (Voice Memory feature) or page 78 (Con-
test Keyer) for details.
[( VFO-A ) RX ] Indicator/Switch
Press this button to activate receive on the VFO-A fre-
quency. The LED inside the button will glow green
when the transceiver receives the VFO-A frequency.
When the transceiver receives the VFO-A frequency,
pressing this button momentarily will mute the receiver,
and the indicator will blink. Pressing the button once
more will restore receiver operation, and the indicator
will glow green steadily.
& S
WITCHES
E
FFECT
Page 19