User's Manual

Page 93FTDX5000 OPERATING MANUAL
AUDIO PEAK FILTER
1. Where you have set the CW mode onto the VFO-A
receiver, press the
(
VFO-A
)[
CONT/APF
]
button to
activate the APF (Audio Peak Filter) which provides a
very narrow audio bandwidth. The peak position of
the APF will appears in the SUB DISPLAY-
II, and
the
(
VFO-A
)[
SELECT
]
knob will now functions as
the APF knob.
2. Rotate the
(
VFO-A
)[
SELECT
]
knob to the left or right
to reduce the interference.
3. To disable the APF, press the
(
VFO-A
)[
CONT/APF
]
button again.
4. To activate the APF (Audio Peak Filter) on the VFO-
B, press the
(
VFO-B
)[
CONT/APF
]
button and adjust
the
(
VFO-B
)[
SELECT
]
knob to reduce the interfer-
ence. Indicate the peak position of the APF in the SUB
DISPLAY-
III.
(
VFO-B
)[
SELECT
]
Knob
(
VFO-A
)[
CONT/APF
]
Button
(
VFO-B
)[
CONT/APF
]
Button
(
VFO-A
)[
SELECT
]
Knob
CW DELAY TIME SETTING
During semi-break-in (not QSK) operation, the hang time of the transmitter, after you have finished sending, may be
adjusted to a comfortable value consistent with your sending speed. This is the functional equivalent to the “VOX Delay”
adjustment used on voice modes, and the delay may be varied anywhere between 20 milli-seconds (
[
DELAY
]
knob set
fully counter-clockwise) and 5 seconds (fully clockwise).
1. Press the
[
BK-IN
]
button to enable CW transmission
(Menu item “059 A1A BK-IN” must be set to “
SEMISEMI
SEMISEMI
SEMI”).
2. Start sending, and adjust the
[
DELAY
]
knob so that
the hang time is as you prefer for comfortable opera-
tion.
ADVICE:
The SUB DISPLAYs will show the delay time for 3
seconds whenever the
[
DELAY
]
knob is turned.
You may disable this feature (displaying the delay time)
via Menu item “015 DISP LVL IND”. See page
???
for details.
[
BK-IN
]
Button
[
DELAY
]
Knob
CW PITCH ADJUSTMENT
Rotation of the front panel’s
[
PITCH
]
knob 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.
ADVICE:
The SUB DISPLAYs will show the spot tone frequency
for 3 seconds whenever the
[
PITCH
]
knob is turned.
You may disable this feature (displaying the spot tone fre-
quency) via Menu item “015 DISP LVL IND”. See page
??? for details.
TERMINOLOGY:
CW Pitch: If you tuned to an exact “zero beat” on an
incoming CW signal, you could not copy it (“Zero beat”
implies a 0 Hz tone). Therefore, the receiver is offset sev-
eral hundreds of Hz (typically), so as to allow your ear to
detect the tone. The BFO offset associated with this tun-
ing (that produces the comfortable audio tone) is called
the CW Pitch.
[
PICTH
]
Knob