Adjusting The Sidetone And Pitch Frequency; Adjusting The Sidetone Volume; Cw Rise Time; Auto Zero-In (Cw Auto Tune) - Kenwood TS-890S Instruction Manual

Adjusting the Sidetone and Pitch Frequency

• During key-down in the CW mode, a tone can be heard from the
speaker of this transceiver. This tone is known as a sidetone.
When this tone is heard, it means it is possible to monitor the
Morse code transmitted by one's own station.
• In the CW mode for direct keying of the carrier, a BFO (beat
frequency oscillator) is needed to convert the carrier wave into
audible sound. The difference in frequency between the BFO
and carrier wave can be heard in the form of a beat. This
difference in frequency is called RX pitch.
• Both the sidetone and the RX pitch have the same frequency.
Turn the [MIC/PITCH] control.
Configure to a sidetone frequency that can be heard most
clearly. Turning the [MIC/PITCH] control to the right increases
the frequency, while turning the control to the left decreases it.
Setting Value 300 to 700 (default) to 1100 [Hz] (5-step)

Adjusting the Sidetone Volume

Configure in Menu [1-02] "Sidetone Volume"
Setting Value Off/ 1 to 10 (default) to 20 (1 step)
Sidetone volume like the playback volume of the CW
●
message cannot be altered using the [AF] control.

CW Rise Time

The rise time of CW refers to the time interval from key-down to
the point where the output waveform reaches the highest peak.
Configure in Menu [5-15] "CW Rise Time"
Setting Value 1/ 2/ 4/ 6 (default) [ms]
• The default setting (6 [ms]) is suited for low-speed to
medium-speed keying. For high-speed keying, configure to
"4 [ms]", "2 [ms]" or "1 [ms]".

Auto Zero-in (CW Auto Tune)

This function automatically tunes the TX frequency to coincide with
the RX frequency of the target station in order to communicate with
a station receiving in the CW mode.
1 Turn the Tuning control and adjust roughly until the
RX audio of CW can be heard.
2 Press [CW T.] to set auto zero-in (CW auto tune) to
ON.
.
• << >> starts to blink.
• The TX frequency is automatically adjusted to match the RX
frequency of the target station, and the pitch of the RX signal
coincides with the sidetone and RX pitch frequency.
• After auto zero-in (CW auto tune) has ended, <<
disappears. If auto zero-in (CW auto tune) cannot be started up,
the frequency is restored to the original value.
Using auto zero-in (CW auto tune) allows tuning up to
●
±50 Hz from the RX frequency of the target station.
Auto zero-in (CW auto tune) may not be successful when
●
the keying speed at the receiving station is slow, when
there is interference or when the signals are weak.
When RIT is ON, auto zero-in (CW auto tune) functions
●
with respect to the frequency shifted using RIT.
The operable range of auto zero-in (CW auto tune) varies
●
depending on the status of reception. For example, if the
DSP filter width is 500 Hz, auto zero-in (CW auto tune)
will function with respect to RX signals within an
approximate RX pitch frequency range of ±300 Hz.

CW BFO Sideband

This is a function for switching CW (USB) and CW-R (LSB) with
CW (LSB) and CW-R (USB).
Example: Set the CW carrier point to LSB so that the CW RX tone
rises at the same time when the frequency is raised.
Configure in Menu [5-05] "CW BFO Sideband"
Setting Value

CW Automatic Transmission from SSB Mode

When the menu below is configured to ON and paddle or key-down
of the electronic keyer is performed during operation in the SSB
mode, the SSB mode switches automatically to the CW mode and
transmission is enabled in the CW mode. The mode switches
automatically from USB to CW or LSB to CW-R.
• Upon shifting from the SSB mode to the CW mode, carrier
frequency offset will function even when "Carrier Frequency
Offset (SSB Mode to CW Mode)" is set to OFF. For this reason,
to call a station that transmitted a CW after the CW is received
during operation in the SSB mode, this can be done easily using
the paddle or electronic keyer operation.
Configure in Menu [5-06] "Automatic CW TX with
Keying in SSB Mode"
Setting Value
• Menu [5-06] "Automatic CW TX with Keying in SSB Mode" does
not function during transmission and when in the split mode.

Frequency Offset when Shifting from SSB to CW Mode

Upon switching to the CW mode to communicate with a station that
transmitted a CW after the CW signal is received during operation
in the SSB mode, it is usually necessary to correct the frequency
by turning the Tuning control slightly. However, turning on this
function enables the frequency to be corrected automatically.
Configure in Menu [5-07] "Carrier Frequency Offset
(SSB Mode to CW Mode)"
Setting Value
>>
COMMUNICATING AIDS 5
USB (default)/ LSB
Off (default)/ On
Off (default)/ On
5-9