Kenwood TS-590SG Operation Manual - Page 32

Enhanced Communications

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6 ENHANCED COMMUNICATIONS SPLIT-FREQUENCY OPERATION Usually you can communicate with other stations using a single frequency for receiving and transmitting. In this case, you select only one frequency on either VFO A or VFO B. However, there are cases where you must select one frequency for receiving and a different frequency for transmitting. This requires the use of 2 VFOs. This is referred to as "split-frequency operation". One typical case which requires this type of operation is when you use an FM repeater {page 25}. Another typical case is when you call a rare DX station. When a rare or desirable DX station is heard, that operator may immediately get many simultaneous responses. Often, such a station is lost under the noise and confusion of many calling stations. If you find that you are suddenly being called by many operators, it is your responsibility to control the situation. You may announce that you will be "listening up 5 (kHz, from your present transmission frequency)", or "listening down between 5 and 10 (kHz)". 1 Press [A/B (A=B)] to select VFO A or VFO B. • " " or " " appears to show which VFO is selected. 2 Select an operating frequency. • This frequency will be used for transmission. • To copy the selected VFO frequency to the other VFO, press and hold [A/B (A=B)]. 3 Press [A/B (A=B)] to select the other VFO. 4 Select an operating frequency. • This frequency will be used for reception. 5 Press [SPLIT]. • " " appears. • Each time you press [A/B (A=B)], the reception and transmission frequencies are swapped. 6 To quit split-frequency operation, press [SPLIT] again. • " " disappears. DIRECTLY ENTERING THE FREQUENCY SPLIT SPECIFIED BY A DXer To directly enter the difference between the TX and RX frequencies specified by a DXer, follow the instruction below while receiving on the main band of a signal from the DXer. 1 Press and hold [SPLIT]. • " " blinks. 2 Enter the frequency difference (the "split") in the order of kHz as specified by the DX station. • If the frequency specified by the DXer is higher than your current frequency, enter the specified frequency in the order of kHz using the numeric and band-select keypad. Conversely, if the specified frequency is lower, prefix a value of "0" to the frequency. 24 • For example, enter a value "5" if you need to increment the frequency by 5 kHz, and enter a value "05" if you need to decrement the frequency by 5 kHz. When the input is completed, the transmitted frequency is set, split operation is enabled, and " " stops blinking and remains lit. TURN THE TUNING CONTROL TO SEARCH FOR THE TRANSMIT FREQUENCY To directly search for the transmit frequency by rotating the Tuning control, follow the instruction below while receiving on the main band of a signal from the DX station. 1 Press and hold [SPLIT]. • " " blinks. 2 Turn the Tuning control to search for the frequency. • Press [CLR] to stop searching. 3 Press [SPLIT] to end. • The frequency is configured as the transmit frequency and split operation begins. • " " lights. TF-SET (TRANSMISSION FREQUENCY SET) TF-SET allows you to temporarily switch your transmission frequency and reception frequency. Canceling this function immediately restores the original transmission and reception frequencies. By activating TF-SET, you can listen on your transmit frequency, and change it while listening. This allows you to check whether or not the newly selected transmission frequency is free of interference. 1 Configure split-frequency operation as explained in the previous section. 2 Press and hold [TF-SET], then turn the Tuning control or press Mic [UP]/ [DWN] to change the transmission frequency. • The transceiver receives on the frequency as you change, but the frequency shown on the sub-display (the original reception frequency) stays unchanged. 3 Release [TF-SET]. • You are now receiving again on your original reception frequency. Successfully contacting a DX station in a pileup often depends on making a well-timed call on a clear frequency. That is, it is important to select a relatively clear transmission frequency and to transmit at the exact instant when the DX station is listening but the majority of the groups aren't transmitting. Switch your reception and transmission frequencies by using the TF-SET function and listen to your transmission frequency. You will soon learn the rhythm of the DX station and the pileup. The more proficient you become at using this function, the more DX stations you will contact.

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24
6
ENHANCED COMMUNICATIONS
SPLIT-FREQUENCY OPERATION
Usually you can communicate with other stations using
a single frequency for receiving and transmitting.
In
this case, you select only one frequency on either VFO
A or VFO B.
However, there are cases where you
must select one frequency for receiving and a different
frequency for transmitting.
This requires the use of 2
VFOs.
This is referred to as “split-frequency operation”.
One typical case which requires this type of operation
is when you use
an FM repeater {page 25}.
Another
typical case is when you call a rare DX station.
When a rare or desirable DX station is heard, that
operator may immediately get many simultaneous
responses.
Often, such a station is lost under the noise
and confusion of many calling stations.
If you find that
you are suddenly being called by many operators, it
is your responsibility to control the situation.
You may
announce that you will be “listening up 5 (kHz, from
your present transmission frequency)”, or “listening
down between 5 and 10 (kHz)”.
1
Press
[A/B (A=B)]
to select VFO A or VFO B.
•
“
” or “
” appears to show which VFO is
selected.
2
Select an operating frequency.
•
This frequency will be used for transmission.
•
To copy the selected VFO frequency to the
other VFO, press and hold
[A/B (A=B)]
.
3
Press
[A/B (A=B)]
to select the other VFO.
4
Select an operating frequency.
•
This frequency will be used for reception.
5
Press
[SPLIT]
.
•
“
” appears.
•
Each time you press
[A/B (A=B)]
, the reception
and transmission frequencies are swapped.
6
To quit split-frequency operation, press
[SPLIT]
again.
•
“
” disappears.
DIRECTLY ENTERING THE FREQUENCY SPLIT
SPECIFIED BY A DXer
To directly enter the difference between the TX
and RX frequencies specified by a DXer, follow the
instruction below while receiving on the main band of
a signal from the DXer.
1
Press and hold
[SPLIT]
.
•
“
” blinks.
2
Enter the frequency difference (the “split”) in the
order of kHz as specified by the DX station.
•
If the frequency specified by the DXer is higher
than your current frequency, enter the specified
frequency in the order of kHz using the numeric
and band-select keypad. Conversely, if the
specified frequency is lower, prefix a value of
"0" to the frequency.
•
For example, enter a value “5” if you need
to increment the frequency by 5 kHz, and
enter a value “05” if you need to decrement
the frequency by 5 kHz. When the input is
completed, the transmitted frequency is set,
split operation is enabled, and “
” stops
blinking and remains lit.
TURN THE TUNING CONTROL TO SEARCH FOR
THE TRANSMIT FREQUENCY
To directly search for the transmit frequency by
rotating the
Tuning
control, follow the instruction
below while receiving on the main band of a signal
from the DX station.
1
Press and hold
[SPLIT]
.
•
“
” blinks.
2
Turn the
Tuning
control to search for the frequency.
•
Press
[CLR]
to stop searching.
3
Press
[SPLIT]
to end.
•
The frequency is configured as the transmit
frequency and split operation begins.
•
“
” lights.
TF-SET (TRANSMISSION FREQUENCY SET)
TF-SET allows you to temporarily switch your
transmission frequency and reception frequency.
Canceling this function immediately restores the
original transmission and reception frequencies.
By activating TF-SET, you can listen on your transmit
frequency, and change it while listening.
This allows
you to check whether or not the newly selected
transmission frequency is free of interference.
1
Configure split-frequency operation as explained in
the previous section.
2
Press and hold
[TF-SET]
, then turn the
Tuning
control or press Mic
[UP]
/
[DWN]
to change the
transmission frequency.
•
The transceiver receives on the frequency as
you change, but the frequency shown on the
sub-display (the original reception frequency)
stays unchanged.
3
Release
[TF-SET]
.
•
You are now receiving again on your original
reception frequency.
Successfully contacting a DX station in a pileup
often depends on making a well-timed call on a clear
frequency.
That is, it is important to select a relatively
clear transmission frequency and to transmit at the
exact instant when the DX station is listening but the
majority of the groups aren’t transmitting.
Switch
your reception and transmission frequencies by using
the TF-SET function and listen to your transmission
frequency.
You will soon learn the rhythm of the
DX station and the pileup.
The more proficient you
become at using this function, the more DX stations
you will contact.