Assisting Your Smooth Qso; Simplex Operation; Split Operation - Kenwood TS-990S Instruction Manual

5 ASSISTING YOUR SMOOTH QSO

SIMPLEX OPERATION

In most day to day operation, QSOs are Simplex
operations using the same frequency for reception and
transmission. For Simplex operation with this transceiver,
you will transmit and receive in the main band.
Note:
◆ The reception capability for the main band cannot be disabled.

SPLIT OPERATION

You may use the Split function that allows you to
transmit and receive using different frequencies when
you make a QSO with the DX-pedition station. For
Split operation using this transceiver, you can allocate
different frequencies for the main band and sub band;
one band is used for transmission and the other band for
reception. {page 5-30}
FINDING THE TX FREQUENCY BY ROTATING THE
TUNING CONTROL (S)
To directly tune the transmit frequency, follow the
instruction below during reception on the main band from
the DXer.
1 Press [M▶S] to copy the operating frequency and
mode for the main band to the sub band.
2 Press [TX] (S) to select the sub band enabling you to
transmit.
The "TX" (S) LED lights green and the "SPLIT" LED lights
yellow, and you can start the split operation.
3 Tune the sub band frequency with a rotation of the
Tuning (S) control to be the transmit frequency.
The sub screen the frequency difference between the main
band and sub band appears as ∆F.
Contents Index
[M▶S] [RX](S) [TX](S)
[TX](M)
Tuning (S)
Note:
◆ Pressing [TX] (M) finishes the split operation, and the transceiver
reverts to simplex operation.
◆ To temporarily receive using the transmit frequency, use the
TF-SET function.
◆ Refer to "SUB SCREEN" for details of the display method of the
sub screen. {page 4-4}
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 during reception on the main band of a signal from
the DXer.
[RX](M)
1 Press [<MAIN] to enter the main mode.
2 Press and hold [TX] (S).
The "SPLIT" LED lights yellow, each LED on the numeric
and band-select keypad also lights. An error will occur if the
frequency for the sub band is locked. Do this operation after
deactivating the frequency lock.
[TX](S) [CLR]
[TX](M)
5-1