Digital Noise Reduction (Dnr) Operation - Yaesu FTDX-9000MP Operation Manual

I
NTERFERENCE
D
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 rotating the NR knob, any of sixteen different noise-
reduction algorithms can be selected; each of these algorithms was create 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.
Main (VFO-A) Band DNR Operation
1. Press the Main (VFO-A) band's NR switch (#
The LED imbedded in the switch will glow Red, con-
firming that the DNR system is engaged.
2. Rotate the Main (VFO-A) band's NR knob (#
select the setting that most effectively reduces the noise
level.
To disable the DNR system, press the Main (VFO-A) band's
NR switch once more. The imbedded LED will turn off,
confirming that the DNR system is not active.
Sub (VFO-B) Band DNR Operation
1. Press the Sub (VFO-B) band's RX switch (#
engage Dual Receive operation.
2. Press the Sub (VFO-B) band's DNR switch (#
The LED imbedded in the switch will glow Orange,
confirming that the DNR system is engaged.
3. Rotate the Sub (VFO-B) band's DNR knob (#
select the setting that most effectively reduces the noise
level.
To disable the DNR system, press the Sub (VFO-B) band's
DNR switch once more. The imbedded LED will turn
off, confirming that the DNR system is not active.
FT 9000MP O
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IGITAL OISE EDUCTION
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DNR O
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SUB (VFO-B)
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IGNALS WITHIN
PERATION
DNR Knob NR Knob
DNR Switch
MAIN (VFO-A)
3 )
KHZ
NR Switch
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