Kenwood TS-590S - Manual (Page 46)

38
REJECTING INTERFERENCE
■ CW/ FSK Mode
1 Select CW or FSK mode.
2 Turn the LO/WIDTH control clockwise
to increase the bandwidth (wide), or
counterclockwise to decrease the bandwidth
(narrow).
Before
Interfering
signal
Interfering
signal
After
Desired signal
Mode Bandwidth Selection (Hz) Default
CW
50, 80, 100, 150, 200, 250,
300, 400, 500, 600, 1000,
1500, 2000, 2500
500 Hz
FSK 250, 500, 1000, 1500 500 Hz
3 As for CW, you can further adjust the shift
frequency for the pass band. Turn the
HI/SHIFT control clockwise to increase the
shift frequency (high), or counterclockwise to
decrease the shift frequency (low).
Shift Frequency (Hz) Default
300, 350, 400, 450, 500, 550, 600,
650, 700, 750, 800, 850, 900, 950,
1000
800 Hz
■ Data Mode
1 Select Data mode (USB-DATA/LSB-DATA).
2 Turn the LO/WIDTH control clockwise
to increase the bandwidth (wide), or
counterclockwise to decrease the bandwidth
(narrow).
Bandwidth Selection (Hz) Default
50, 80, 100, 150, 200, 250, 300, 400,
500, 600, 1000, 1500, 2000, 2500
2500 Hz
3 Turn the HI/SHIFT control clockwise to increase
the shift frequency (high), or counterclockwise
to decrease the shift frequency (low).
Shift Frequency (Hz) Default
1000, 1100, 1200, 1300, 1400, 1500,
1600, 1700, 1800, 1900, 2000, 2100,
2210
1500 Hz
■ IF Filter A and B
This transceiver has 2 built-in IF filters: A and
B. The IF Filter settings are stored with the last
settings of the LO/WIDTH and HI/SHIFT controls.
Press [IF FIL] to toggle between IF Filter setting A
and B.
• “ ” appears when IF filter setting A is selected
and “ ” appears when IF filter setting B is
selected.
DSP FILTERS
Kenwood digital signal processing (DSP) technology
is adapted to this transceiver. Using DSP filtering
(AF), you can control the bandwidth, cancel the
multiple jamming beat, and reduce the noise level.
CHANGING THE DSP FILTER BANDWIDTH
For improving interference reduction capability, this
transceiver also provides IF filters designed using
DSP technology. When in SSB, FM, or AM mode, you
can change the filter bandwidth by altering its low and/
or high cut-off frequency. For CW, FSK, and DATA
modes, you can change the filter bandwidth by directly
specifying a bandwidth. Changing the filter bandwidth
does not affect the current receive frequency.
• The meter display changes, based on the
bandwidth you are setting up.
■ SSB/ FM/ AM Mode
1 Select SSB, FM, or AM mode.
2 Turn the LO/WIDTH control clockwise to raise
the low cut-off frequency, or counterclockwise
to lower the low cut-off frequency.
Mode Low cut Frequency (Hz) Default
SSB/
FM 0, 50, 100, 200, 300, 400,
500, 600, 700, 800, 900, 1000
300 Hz
AM 0, 100, 200, 300 100 Hz
Turn the HI/SHIFT control clockwise to raise the
high cut-off frequency, or counterclockwise to
lower the high cut-off frequency.
Mode High cut Frequency (Hz) Default
SSB/
FM
1000, 1200, 1400, 1600,
1800, 2000, 2200, 2400,
2600, 2800, 3000, 3400,
4000, 5000
2600 Hz
AM 2500, 3000, 4000, 5000 5000 Hz
Low cut-off frequency
Interfering
signal
Interfering
signal
Desired signal
High cut-off frequency
0 Hz 1 KHz 5 KHz
Note: The cut-off frequencies can be adjusted
independently for each operating mode. When you change
the operating mode, the previous setting is recalled for each
operating mode.