Yaesu FT DX 1200, Руководство по эксплуатации

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Page 57
FT
DX
1200 O
PERATING
M
ANUAL
D
IGITAL
NOTCH F
ILTER
(
DNF
)
O
PERATION
The ' igital 12 TCH Filter '1 F) is an effective beat-canceling ¿ lter that can null out a number of interfering beat notes
inside the receiver passband. Because this is an $ uto- 1 otch feature, there is no adjustment knob associated with this ¿ l-
ter.
A
DVICE
:
If a very strong interfering carrier is encountered, we recommend you ¿ rst use the IF 12 TCH ¿ lter, as it is the most ef-
fective notching tool in the receiver section.
1. 3 ress the [ S
/
T
/
W
/
X
] button to select the “
DNF ”.
. 3 ress the [ SELECT
] button to choose “
ON
”. The
“ DNF ” will appear in the display.
To disable the ' igital 12 TCH Filter, just repeat the
above procedure, pressing the [ SELECT
] button to
choose “
OFF
” in step above. The “ DNF ” will turn off,
con ¿ rming that the ' igital 12 TCH Filter is not active.
D
IGITAL
N
OISE
R
EDUCTION
(
DNR
)
O
PERATION
The ' igital 1 oise 5 eduction '15 ) system is designed to reduce the level of random noise found on the HF and 0
0 H ] bands, and it is especially effective during SSB operation. By setting the 0 enu item “
110 DNR LEVEL
”, any of 1
different noise-reduction algorithms can be selected each of these algorithms was created for dealing with a different
noise pro ¿ le. You will want to experiment with the '15 system to ¿ nd the best setting corresponding to the noise cur-
rently being experienced.
1. 3 ress the [ S
/
T
/
W
/
X
] button to select the “
DNR ”.
. 3 ress the [ SELECT
] button to choose “
ON
”. The
“ DNR ” will appear in the display.
To disable the '15 system, just repeat the above proce-
dure, pressing the [ SELECT
] button to choose “
OFF
” in
step above. The “ DNR ” will turn off, con ¿ rming that
the '15 system is not active.
[SELECT] button
[SELECT] button
I
NTERFERENCE
R
EJECTION
DNF Indicator
DNR Indicator
[
S / T / W / X
] button
[
S
/
T
/
W
/
X
] button