Kenwood TS-990S - Manual (Page 142)

6 REJECTING INTERFERENCE
6-4
Index Contents
◆ If "Off" is configured for Advanced Menu 06, "Bandwidth (Additional
Roofing Filter)", "Add." does not appear as the parameter for
passband width.
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 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.
[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.