[Elecraft] K3 - Linking the VFOs for CW - SSB switching

VR2BrettGraham vr2bg at harts.org.hk
Fri May 2 22:32:47 EDT 2008


WA6HHQ reported:

>We're testing this right now.

Which was later clarified to be not VE3QF's A2-approach.

Would you be so kind as to confirm that what has been
implemented is triggered by keying input whilst in SSB?

If so, will this new feature be user selectable?

If not, can it be?

Switching modes on a radio is usually something that
comes as a result of the operator deciding to switch
modes & having to do something specific to achieve
that.  Presumption that the keying line is only asserted
when CW is to be sent is asking a bit much.  Making
the input for sending CW also trigger a mode change is
a significant change in behavior, one that normally would
not be expected of a radio - kind of like not expecting that
switching on the main beam headlamps causes a car
to change lanes & switch gears by itself.

Having CW in the right place so that there is no need to
move the VFO from where tuned for a SSB signal seems
to be a more reasonable solution without adding feature
that causes radio to go on form of walkabout on the
unsuspecting.

I seem to recall switching from USB to CW in QSO on
FT-726R required no retuning.  I don't recall ever changing
from LSB to CW in QSO when on satellite, but today in
radio with CW/CW-R & carrier in right place, the requested
functionality could be had by the radio selecting CW/CW-R
as appropriate for the SSB mode switched from.  Not
sure how to deal with direction of tuning - would seem a
bit odd for sophisticated new radio like K3 to have what
looked to be high/low-side injection change on some
bands.

73, VR2/KBrett7Graham/p.



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