Kenwood TS-990S Operation Manual - Page 148

Switching The If Filter Type

Page 148 highlights

6 REJECTING INTERFERENCE SWITCHING THE IF FILTER TYPE You can select from one of three types of IF filters (Sharp, Medium, and Soft) following the type of interference and the operating environment. CONFIGURING THE BEHAVIOR OF HI/SHIFT AND LO/ WIDTH (SSB AND SSB-DATA ONLY) For use in SSB or SSB-DATA mode, you can configure the cutoff frequencies (low and high frequencies) or passband width and its amount of shift from the center frequency using the HI/SHIFT control and LO/WIDTH control.  4 1 Press and hold [FIL/SEL] (M) or [FIL/SEL] (S) to open the RX Filter screen. The selected band and the mode name while receiving appear, and the selected RX filter (A, B, or C) can be edited.

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6 REJECTING INTERFERENCE
6-4
Index
Contents
SWITCHING THE IF FILTER TYPE
You can select from one of three types of IF filters (Sharp,
Medium, and Soft) following the type of interference and
the operating environment.
[F1]~[F7]
[ESC]
[FIL/SEL] (S)
[MULTI/CH]
[FIL/SEL] (M)
1
Press and hold
[FIL/SEL]
(M) or
[FIL/SEL]
(S) to open
the
RX Filter
screen.
The selected band and the mode name while receiving
appear, and the selected RX filter (A, B, or C) can be edited.
2
Press
[FILTER]
(F2) or
[FIL/SEL]
(M) or
[FIL/SEL]
(S)
to select the receive filter.
Each press cycles the type of the RX filter through A > B
> C). In the main screen, the letter "A", "B", or "C" appears
above the frequency display of the selected band.
The filter type, if appears in the sub-screen, changes
according to the RX filter type selected.
3
Press
[IF]
(F4) to enable to edit the IF Filter.
4
Subsequently, press
[IF]
(F4) to select the filter shape.
Each time you press
[IF]
(F4), the selection cycles as follows:
Medium > Sharp > Soft > Medium.
The default is "Medium".
5
Press
[ESC]
to exit.
CONFIGURING THE BEHAVIOR OF HI/SHIFT AND LO/
WIDTH ±SSB AND SSB-DATA ONLY²
For use in SSB or SSB-DATA mode, you can configure the
cutoff frequencies (low and high frequencies) or passband
width and its amount of shift from the center frequency
using the
HI/SHIFT
control and
LO/WIDTH
control.
[F1]~[F7]
[MENU]
[LO/WIDTH]
[HI/SHIFT]
■ Behavior of the HI/SHIFT and LO/WIDTH controls
in SSB mode
1
Select Group No. 6, "TX/RX Filters & Misc.", from the
Menu
screen.
2
Access Menu 07, "Filter Control in SSB Mode (High/
Low and Shift/Width)".
3
Press
[SELECT]
(F4) to allow editing of the parameter
box.
4
Press
[-]
(F4) or
[+]
(F5) to select either "High & Low
Cut" or "Shift & Width" for the behavior of the control.
The changes of the shift and filter type appear on the
RX
Filter
screen. The default is "High & Low Cut".
If "High & Low Cut" is selected:
A value for cutoff frequency (either low or high) will vary.
If "Shift & Width" is selected:
Values for the passband width and the amount of the shift will
vary.
5
Press
[
]
(F1).
6
Press
[MENU]
to exit.