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FT-2000
Operating Manual
Vertex Standard Co., Ltd.
58
*: When the optional YF-122C (500 Hz) or YF-122CN (300 Hz) CW narrow filter
is installed.
In the FM mode, both the transmit and receive bandwidths are changed by the
[NAR] button.
Digital Notch Filter (DNF) Operation
The Digital Notch Filter (DNF) is an effective beat-cancelling 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 [DNF] button. “DNF” icon will appear in the display, confirming that the
DNF system is engaged.
2. To cancel DNF operation, press the [DNF] button once more. The “DNF” icon will
turn off, confirming that the Digital Notch Filter is no longer in operation.
Advice: The Digital Notch Filter effects to the Main (VFO-A) band only.
IF Noise Blanke (NB) Operation
The FT-2000 includes an effective IF Noise Blanker, which can significantly reduce
noise caused by automotive ignition systems.
Main band (VFO-A) NB Operation
1. Press the [NB] button momentarily to reduce a short pulse noise such as from
switching transients, automobile ignitions and power lines. “NB” icon will appear
in the display to confirm that the Narrow-NB is operating. Press and hold the [NB]
button for two seconds to reduce a longer duration man-made pulse noise. “NB”
icon will blink five second, then appear continuously, to confirm that the Wide-NB
is operating.
2. Advance the [NB] knob to the point where the offending noise is best reduced or
eliminated.
3. To end Noise Blanker operation, press the [NB] button once more. The “NB” icon
will turn off, confirming that the Noise Blanker is no longer in operation.
Advice: When the Roofing filter mode is set to “AUTO” and the Noise Blanker is turned
On, the Roofing Filter bandwidth will automatically be set to 15 kHz.