Specifications
Page 52 FT-950 OPERATING MANUAL
DIGITAL NOTCH FILTER
(
DNF
)
OPERATION
The Digital NOTCH Filter (DNF) is an effective beat-canceling filter that can null out a number of interfering beat notes
inside the receiver passband. Because this is an Auto-Notch feature, there is no adjustment knob associated with this filter.
ADVICE:
If a very strong interfering carrier is encountered, we recommend you first use the IF NOTCH filter, as it is the most
effective notching tool in the receiver section.
1. Press the
[
MENU
]
button to enter the Menu mode.
2. Rotate the
[
SELECT
]
knob to select Menu item “
071071
071071
071
RGEN DNFRGEN DNF
RGEN DNFRGEN DNF
RGEN DNF”.
ADVICE:
Press the
[
SELECT
]
knob to toggle the Menu item
display between “
071 RGEN071 RGEN
071 RGEN071 RGEN
071 RGEN” and “
DNFDNF
DNFDNF
DNF”.
3. Rotate the
[
CLAR/VFO-B
]
knob to select “
ONON
ONON
ON”. The
“ ” icon will appear in the display.
4. Press and hold in the
[
MENU
]
button for one second
to save the new setting and exit to normal operation.
To disable the Digital NOTCH Filter, just repeat the above
procedure, rotating the
[
CLAR/VFO-B
]
knob to select
“
OFFOFF
OFFOFF
OFF” in step 3 above. The “ ” icon will turn off, con-
firming that the Digital NOTCH Filter is not active.
ADVICE:
The Digital NOTCH Filter selection will be memorized
independently on each VFO stack of VFO-A and VFO-B.
DIGITAL NOISE REDUCTION
(
DNR
)
OPERATION
The Digital Noise Reduction (DNR) system is designed to reduce the level of random noise found on the HF and 50 MHz
bands, and it is especially effective during SSB operation. By setting the Menu item “
072 RGEN DNR072 RGEN DNR
072 RGEN DNR072 RGEN DNR
072 RGEN DNR”, any of 15 different
noise-reduction algorithms can be selected; each of these algorithms was created for dealing with a different noise profile,
and you will want to experiment with the DNR system to find the best setting according to the noise currently being
experienced.
1. Press the
[
MENU
]
button to enter the Menu mode.
2. Rotate the
[
SELECT
]
knob to select Menu item “
072072
072072
072
RGEN DNRRGEN DNR
RGEN DNRRGEN DNR
RGEN DNR”.
ADVICE:
Press the
[
SELECT
]
knob momentarily to toggle the
Menu item display between “
072 RGEN072 RGEN
072 RGEN072 RGEN
072 RGEN” and “
DNRDNR
DNRDNR
DNR”.
3. Rotate the
[
CLAR/VFO-B
]
knob to select the setting
that most effectively reduces the noise level. The “ ”
icon will appear in the display.
4. Press and hold in the
[
MENU
]
button for one second
to save the new setting and exit to normal operation.
To disable the DNR system, just repeat the above proce-
dure, rotating the
[
CLAR/VFO-B
]
knob to select “
OFFOFF
OFFOFF
OFF”
in step 3 above. The “ ” icon will turn off, confirming
that the DNR system is not active.
ADVICE:
The Digital Noise Reduction will be memorized indepen-
dently on each VFO stack of VFO-A and VFO-B.
[
CLAR/VFO-B
]
Knob
[
MENU
]
Button
[
SELECT
]
Knob
[
CLAR/VFO-B
]
Knob
[
MENU
]
Button
[
SELECT
]
Knob
INTERFERENCE REJECTION