[Elecraft] K3: SO2R-in-a-box

[Bill W4ZV]

On Fri, Oct 16, 2009 at 11:21 AM, Joe Subich, W4TV-4 (via Nabble) <
ml-user+154617-66613788 at n2.nabble.com<ml-user%2B154617-66613788 at n2.nabble.com>
> wrote:

>
> "SO2R-in-a-box" will probably require that the subreceiver
> use the 2nd antenna jack on the KAT3 (or a yet to be designed
> antenna switch) in order to be compatible with conventional
> BPF, antenna switching and amplifier configurations.  In that
> case it will be limited by the isolation in the KAT3.
>
> The alternative is to use the subreceiver and Aux Ant jack
> with A<>B logic for transmitting.  That case will require an
> entirely new band decoding/BPF/antenna switching topology -
> one that supports TX/RX/RX switching (which happens to be on
> of the features of microHAM Station Master Deluxe whenever
> it is finally available) and an understanding that the
> transmit "radio" will always be in the left ear (e.g. will
> move with transmit focus).
>

JMHO but I believe true SO2R should wait until there's more real estate on a
larger K4 front panel, even if the internal RF issues can be solved in the
K3.  The K3 already suffers from ergonomic overload and lack of flexibility
with antenna selection, audio routing, etc. even when just using diversity
in SO1R.  True SO2R adds another level of complexity to an already
overloaded interface.  Given this, I believe there are higher priorities to
work on with the K3 and save SO2R for a better human interface in the K4.

73,  Bill  W4ZV

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