Single Button Toggles If Filters Between A And B - Kenwood TS-590SG Manual

5.3 Single Button Toggles IF Filters between A and B

For use of the legendary slope tuning and WIDTH/SHIFT functions incorporated in successive KENWOOD HF transceivers,
TS-590S/SG stores the status of two filters (FILTER A and FILTER B) set for each type of signal. Hence, you can easily
switch between the filters with a single touch of a button.
As an example, store the setting of a wide IF filter and narrow IF filter in FILTER A and FILTER B respectively. When you
look for a station for a contact, use the wider FILTER A and once you have started a QSO, switch to the narrower FILTER
B, with a touch of a button, to be able to receive the target signal only .
For TS-590SG (TS-590S Ver.2 Update or later), improvements have been made to the storing of the selective states of
FILTER A and FILTER B using VFO A and VFO B respectively. This enhances user convenience during split operation; the
VFO at the receiving end uses the narrow bandwidth FILTER A to remove the interference and the VFO at the transmitting
end uses the wide bandwidth FILTER B to check the signal condition near the transmitting frequency via TF-SET.
Hints and Tips
● Is this filter switchover with a single touch of a button different from NAR?
This filter switchover with a single action is based on the way the NAR function was used in the days when analog IF filters were
used. Continuously, variable bandwidth is convenient in the sense that you can adjust it freely to whatever value you choose, but
you may have difficulty operating in a timely manner in a contest or similar because it does not allow a jump to a certain value
instantaneously. Therefore, we considered introducing a mechanism equivalent to the previous NAR function, but we were swayed
by the opinion that a user wants to operate with normal bandwidth usually, yet still maintain the to switch to a wider bandwidth
when it is required. Consequently, to satisfy both needs, we have devised a system to store settings freely.
SOFTWARE: ENHANCING OPERATING PLEASURE 05
Figure 5-3 [IF FIL] Key
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