FRONT PANEL CONTROLS & SWITCHES

RX CLAR Switch

Pressing this button activates the RX Clarifier, to allow offsetting the Main (VFO-A) receiving frequency temporarily. Press this button once more to return the Main receiver to the frequency shown on the main frequency display field; the Clarifier offset will still be present, though, in case you want to use it again. To cancel the Clarifier offset, press the [CLEAR] button.

TX CLAR Switch

Pressing this button activates the TX Clarifier, to allow offsetting the Main (VFO-A) transmit frequency temporarily.

Press this button once more to return the transmitter to the Main (VFO-A) frequency shown on the main frequency display field; the Clarifier offset will still be present, though, in case you want to use it again. To cancel the Clarifier offset, press the [CLEAR] button.

CLEAR Switch

Pressing this button clears out any frequency offset you have programmed into the Clarifier register (thereby setting the offset to “Zero”).

CLAR Knob

This knob tunes the Clarifier offset frequency up to 9.99 kHz.

VRF Knob

This knob tunes the passband of the VRF (Variable RF Filter) preselector circuit for maximum receiver sensitivity (and out-of-band interference rejection).

ADVICE:

￿The relative position of the VRF passband can be observed on the Tuning Offset Indicator of the dis- play via Menu item “010 diSP BAR SEL.”

￿When the optional RF µTuning Kit is connected, this knob allows adjustment of the center frequency of the µ-Tuning filter passband (which is much narrower than that of the VRF).

VRF Switch

This button turns the VRF filter on and off. While ac- tivated, the “” icon will appear in the FLT column of the Receiver Configuration Indicator on the display.

ADVICE:

When the optional RF µTuning Kit is connected, pressing this button will engage the µ-Tuning filter. The µTuning Kit provides much better RF selectivity than any other RF filter in the Amateur industry, yielding outstanding protection from high RF levels not far removed from the current operating frequency.

NOTCH Switch

This button turns the Main band (VFO-A) receiver’s IF Notch Filter on and off.

When the IF Notch Filter is activated, the peak position of the IF Notch Filter is depicted graphically in the display. The IF Notch Filter center frequency is adjusted via the [NOTCH] knob.

DNF Switch

This button turns the Main band (VFO-A) receiver’s Digital Notch Filter on and off. When the Digital Notch Filter is activated, the “ ” icon appears in the dis- play. This is an automatic circuit, and there is no adjustment knob for the DNF.

NOTCH Knob

This knob adjusts the center frequency of the Main band (VFO-A) receiver’s IF Notch Filter. The Notch Filter is engaged via the [NOTCH] button.

Initially, the approximate center frequency of the IF Notch Filter is adjusted by the outer [COARSE] knob; then, fine tuning of the center frequency is adjusted by the inner [FINE] knob.

FT-2000 OPERATING MANUAL

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