FCC ID: K66FT-857
Operating Manual
Vertex Standard Co., Ltd.
26
DSP Bandpass Filter
In the SSB mode, the receiver’s selectivity may be enhanced via the DSP Bandpass Filter.
1. Press the [DSP] key momentarily. This instantly activates Multi Function Row “p” [DNR, DNF, DBF].
2. Press the [C](DBF) key to activate the DSP Bandpass Filter. Parentheses will appear on both sides of the “DBF”
selection, and the “DSP” will appear at the center top on the display. You will notice a decrease in both background
noise and interference, if any is present.
3. The bandwidth of the DSP filter may be modified, to customize the bandwidth to your operating needs. To adjust the
Low-Cut and High-Cut characteristics of the DSP Bandpass Filter:
・
Press and hold in the [C](DBF) key for one second. This instantly activates Menu Mode No-047 [DSP LPF
CUTOFF], which allows adjustment of the High-Cut (Low-Pass) filter.
・
Turn the DIAL, as desired, to adjust the high-frequency cutoff of the DSP Bandpass Filter.
・
Now rotate the MEM/VFO CH knob one click counter-clockwise to select Menu Mode No-047 [DSP HPF
CUTOFF], which allows adjustment of the Low-Cut (High-Pass) filter.
・
Turn the DIAL, as desired, to adjust the low-frequency cutoff of the DSP Bandpass Filter.
・
When done, press and hold the [F] key for one second to save the new setting(s) and return to normal operation.
4. Press the [C](DBF) key once more to disable the DSP Bandpass Filter.
DSP CW Peaking Filter
In the CW mode, pressing the [C](DBF) key in Multi Function Row “p” [DNR, DNF, DBF] activates a narrow-bandwidth
peaking filter, which may be ideal for use under very crowded conditions. The DSP CW Peaking Filter also is especially
helpful under VHF/UHF weak-signal situations.
The center frequency of the DSP CW Peaking Filter is automatically aligned to be centered on the response you have
selected via the Menu Mode in item No-027 [CW PITCH]. See page 55 for details.
To change the bandwidth of the DSP CW Peaking Filter:
1. Press and hold in the [C](DBF) key for one second on the CW mode. This instantly activates Menu
Mode No-045 [DSP BPF WIDTH], which allows selection of the bandwidth of the DSP CW Peaking
Filter.
2. Rotate the DIAL to select the desired bandwidth. The available values are 60 Hz, 120 Hz, and 240 Hz (default value:
240 Hz).
3. When you have made your selection, press and hold in the [F] key for one second to save the new setting and return to
normal operation.
DSP Noise Reduction (NR)
The Noise Reduction feature of the DSP system may be used to enhance signal-to-noise ratio on weak signals.
1. Press the [DSP] key momentarily. This instantly activates Multi Function Row “p” [DNR, DNF, DBF].