--snip---
> With respect to Phil's combinations, the state of USOS RX on the sending
> station and USOS TX on the receiving station don't matter. The correct
> table is:
Rich is correct with respect to the sending station. However, it does
matter when the receiving station replies to an exchange and the former
sending station has to receive. Hence, my paradox.
>
>
> Sending Station Receiving Station
>
> USOS TX off USOS RX off
> USOS TX off USOS RX on
> USOS TX on USOS RX off
> USOS TX on USOS RX on
>
> The difficulty in deciding what to do about USOS rests mainly with the
> TX side. The RX side costs nothing, you can turn it on and off in an
> instant, and most software lets you see the other case more or less
> easily. On TX, you have to make the decision as a setup decision; you
> can't easily change it on the fly.
>
73 de Phil - N8PS
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