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ENHANCED COMMUNICATIONS
30
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 31}. 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 / M/V] to select VFO A or VFO B to
reception frequency.
•“tA” or “tB” appears to show which VFO is
selected.
2 Select an operating frequency.
The frequency selected at this point will be
used for transmission.
•To copy the selected VFO frequency to the
other VFO, press [A=B/ SPLIT].
3 Press [A/B / M/V] to select the other VFO.
4 Select an operating frequency.
The frequency selected on this VFO will be
used for reception.
5 Press [A=B/ SPLIT] (1 s).
•“ ” appears.
Each time you press [A/B / M/V], the reception
and the transmission frequency are swapped.
6 To quit split-frequency operation, press
[A=B/ SPLIT] (1 s) again.
•“ ” disappears.
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
transmission 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 [MENU/ F.LOCK] (1 s) to lock the Tuning
control.
•“” appears.
3 Press and hold either [ ] or [ ] while the “
icon is visible. While holding down [ ] or [ ],
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.
4 Release [ ] or [ ].
•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.
Note:
TF-SET is disabled while transmitting.
An RIT offset frequency is not added; however, an XIT offset
frequency is added to the transmission frequency.
38


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