Yaesu FTDX9000D - DATA MANAGEMENT Operation Manual page 78

I R
EJECTION ( S
NTERFERENCE
IF N F
OTCH ILTER
The performance of the IF Notch filter is shown in
Figure (A), where the effect of rotation of the
[ NOTCH ] knob is depicted. In Figure (B) you can
see the notching effect of the IF Notch filter as you
rotate the [ NOTCH ] knob to eliminate the incom-
ing interference.
A
NOTCH
IF BANDWIDTH
Page 76
IGNALS WITHIN
( SSB/CW/RTTY/PKT/AM M
O
PERATION
B
QRM (Heterodyne)
Desired Signal
IF BANDWIDTH
)
3
KHZ
FT 9000D O
DX
)
ODES
M
PERATION ANUAL