Cw Pitch Adjustment; Cw Wave Shape - Yaesu FTDX9000D - DATA MANAGEMENT Operation Manual

[ PITCH ] knob
Rotation of the front panel's [ PITCH ] control will allow
adjustment of the center frequency of the receiver pass-
band, as well as the pitch of your offset CW carrier, to the
tone you prefer. The tone may be varied between 300 Hz
and 1050 Hz, in 50 Hz steps.
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The Sub band (VFO-B) frequency display will
show the spot tone frequency for 3 seconds when-
ever the [ PITCH ] knob is turned.
You may disable this feature (displaying the spot
tone frequency) via Menu item "DISPLAY 022
LEVEL INDICATOR." See page 146 for details.
The rise and fall times of the CW envelope may be adjusted using the Menu. The default setting of 4 ms. is ideal for most
operation, as it produces a nicely "rounded" shape to the CW character. However, the rise and fall times may be adjusted to
1/2/4/6 ms, as desired, using Menu item "MODE-CW 056 CW WAVE SHAPE." We generally do not recommend adjust-
ment of this parameter, but if you are using a linear amplifier that is causing some sharpening of the CW character, you may
wish to try the 6 ms setting. Too fast a rise/fall time can produce "hard" keying that borders on the creation of key clicks.
FT 9000D O
DX PERATION
CW P A
ITCH
CW W
AVE
M
ANUAL
CW C
ONVENIENCE
DJUSTMENT
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CW Pitch
If you tuned to an exact "zero beat" on an incom-
ing CW signal, you could not copy it ("Zero beat"
implies a 0 Hz tone). Therefore, the receiver is off-
set several hundreds of Hz (typically), so as to al-
low your ear to detect the tone. The BFO offset
associated with this tuning (that produces the com-
fortable audio tone) is called the CW Pitch.
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HAPE
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EATURES
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