[Elecraft] K3 has dual VFOs, with common or independent modes/bands

[wayne burdick]

I had a couple of questions about the K3's VFO setup. There are dual 
VFOs (A and B), controlled by separate VFO knobs. You can operate 
SPLIT, as usual, whether there's a subreceiver or not.

The K3's VFOs can be set to different modes and even different bands. 
Each VFO also keeps track of its own filter presets (I and II), on a 
per-mode basis. A "preset" in K3-land is a combination of a crystal 
filter (selected automatically by the DSP controls) and the DSP 
settings (shift/width or hicut/locut, which can be used 
interchangably). Having two presets per-mode/per-VFO allows you to set 
up the two xfil/DSP combinations you use most often and quickly toggle 
between them using the I/II button.

There will be an option to link the VFOs (frequency and/or mode and/or 
band), or make them fully independent. For example, if you allow VFO B 
to be completely independent of A, you can set it to a different band, 
perhaps to monitor a calling frequency, while using VFO A for normal 
ham-band RX/TX.

VFO B has its own frequency display, LOCK icon, and (if the sub is 
installed), its own AF GAIN control. To set up other VFO B/subreceiver 
parameters, you can either set up VFO A first and swap it with B, set 
up VFO A and copy it to B, or use the BSET switch to directly set up 
all VFO B parameters.

When BSET is in effect, all of the DSP controls, S-meter, etc. pertain 
to VFO B/sub.

Of course an external computer control program could present two entire 
sets of controls, S-meter, etc. for the two receivers. This is left as 
an exercise for the reader  :)

73,
Wayne
N6KR


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