Kenwood TS-990S Operation Manual - Page 183

Changing The Bandwidth Of The Tx Filter, Tx Dsp Equalizer, Switching The Tx Dsp Equalizer On Or Off

Page 183 highlights

CHANGING THE BANDWIDTH OF THE TX FILTER The transceiver is equipped with TX filters A to C. You can change the bandwidth for SSB and AM modes independently. You can select a TX filter optimal to the selected operating mode. 'dd

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9-9
TRANSMIT FUNCTIONS 9
Index
Contents
CHANGING THE BANDWIDTH OF THE TX FILTER
The transceiver is equipped with TX filters A to C. You
can change the bandwidth for SSB and AM modes
independently. You can select a TX filter optimal to the
selected operating mode.
[F1]~[F7]
[ESC]
[MULTI/CH]
F[TX-FIL]
Mode keys
1
Press a mode key to select SSB, AM, SSB-DATA, or
AM-DATA mode.
2
Press and hold
[TX-FIL]
(F) to open the
TX Filter
screen.
3
Press
[TX-FIL]
(F2) to select a TX Filter.
Each time you press
[TX-FIL]
(F2), the filter cycles as follows:
FIL-A > FIL-B > FIL-C.
4
Press
[LO/HI]
(F3) to select the cutoff frequency.
You can select the low-cut frequency or the high-cut
frequency.
5
Press
[-]
(F4) or
[+]
(F5), or rotate the
MULTI/CH
control to select the low cutoff frequency and the high
cutoff frequency.
Each time you press
[-]
(F4) or
[+]
(F5) or rotate the
MULTI/CH
control one step, the bandwidth cycles
as shown below. Rotate the
MULTI/CH
control
counterclockwise to cycle the cutoff frequencies in the
reverse sequence.
Low Cut: 10, 100, 200, 300, 400, 500 Hz
High Cut: 2500, 2600, 2700, 2800, 2900, 3000 Hz
The default is 300 Hz for the low-cut frequency and 2700
Hz for the high-cut frequency.
6
Press
[ESC]
, or press and hold
[TX-FIL]
(F) to exit.
TX DSP EQUALIZER
The Digital Signal Processor (DSP) allows you to
change the frequency characteristics of the transmitting
audio signal. This function makes it possible to correct
the frequency characteristics of the microphone and
audio transmission quality according to your voice
characteristics and preference.
[F1]~[F7]
[TXEQ/SEL]
[ESC]
[MULTI/CH]
Mode keys
SWITCHING THE TX DSP EQUALIZER ON OR OFF
1
Press a mode key to select SSB, AM, FM, SSB-DATA,
AM-DATA or FM-DATA mode.
2
Press
[TXEQ/SEL]
to enable or disable the TX DSP
Equalizer.
"TXEQ
nnn" appears while the TX DSP equalizer is active
(refer to the list below for the "nnn" display). "TXEQ
OFF"
appears while the TX DSP equalizer is inactive.
TXEQ
HB1: High Boost 1 is selected
TXEQ
HB2: High Boost 2 is selected
TXEQ
FP: Formant Pass is selected
TXEQ
BB1: Bass Boost 1 is selected
TXEQ
BB2: Bass Boost 2 is selected
TXEQ
C: Conventional is selected
TXEQ
U1 - U3: User 1, 2, or 3 is selected
Note:
The TX DSP equalizer will automatically deactivate if the
transceiver enters a mode other than SSB, AM, FM, SSB-DATA,
AM-DATA or FM-DATA.