Simultaneous Main Band And Sub Band Reception; Frequency Tracking - Kenwood TS-990S Instruction Manual

SIMULTANEOUS MAIN BAND AND SUB BAND
RECEPTION
The transceiver has two independent receivers, so that
the transceiver can receive on the main band and sub
band using different frequencies. For example, while you
have a QSO using the transceiver in simplex operation on
the main band, you can tune into a sub band frequency
that a DX-pedition operator has announced to work on and
wait for the DX-pedition operator to come up.
Furthermore, if you wish to call a DX station using Split
operation, with the reception in the main band using the
frequency occupied by the DX station, you can monitor the
transmitted signal by receiving the signal on the sub band.
1 Press [RX] (S) to start receiving on two frequencies.
The "RX" (S) LED lights, and the transceiver starts receiving
on the sub band; now the transceiver receives using the dual
frequencies.
2 Rotate the AF (S) control to adjust the AF gain.
3 Rotate the Tuning (S) control to tune the receive
frequency.
4 Press [RX] (M) or [RX] (S) to finish the dual
frequencies reception.
Note:
◆ Pressing [TX] (S) starts the Split operation allowing the transceiver
to continue reception on the transmit frequency. While you press
down [TF-SET], you can monitor the transmit frequency. For
reception using two frequencies, the transceiver can receive on the
sub band using the transmit frequency while receiving on the main
band.
Contents Index
[RX](S) [TX](S)
[TF-SET] Tuning (S) [AF](S)

FREQUENCY TRACKING

By rotating the Tuning (M) control with the frequency
tracking function activated, you can change the main band
and sub band frequencies with the difference between
the frequencies maintained. Also, rotating the Tuning
(S) control can change the sub band frequency without
changing the main band frequency.
This frequency tracking will be useful, for instance, when
different antennas are connected for the main band and
sub band allowing you to measure the difference in the
signal strengths. The tracking function is particularly
effective on the low-frequency bands.
Frequency Tracking can be used while the main band
and sub band are in VFO mode. If Frequency Tracking is
enabled when the main band and sub band are in different
modes, the sub band is placed in the same mode as the
main band.
1 Press [TRACKING] to enable the Frequency Tracking.
• The operating data of the main band is copied to the
sub band, and the "TRACKING" LED lights green. Press
[TRACKING] again to disable the Frequency Tracking, the
"TRACKING" LED turns Off.
• The operating data such as the frequency and the
operating mode for the main band is copied to the sub
band.
• Rotating the Tuning (M) control when the sub band
frequency is different from the main band frequency
changes both main band and sub band frequencies and
retains the same frequency differential.
• If Fine Tuning is enabled in either of the bands, Fine Tuning
for the other will also be enabled.
• If the band is swapped, or if the VFO data is recalled from a
Memory Channel while in VFO mode, Frequency Tracking
will be disabled.
• While Frequency Tracking is active, the scan does not start.
ASSISTING YOUR SMOOTH QSO 5
[TRACKING]
Tuning (M)
Tuning (S)
5-3