[ADXA] K8R Super Fox Experience

[WB5JJJ]

I've not seen K8R at all today on any of his spotted frequencies.
Yesterday afternoon, a lone signal on PSKReporter purporting to be K8R was
originating from Japan as detected by stations in Canada, the US as well as
Hawaii for about an hour.  Must have been a standard F/H pirate.

The receive algorithm for SF does not decode the normal F/H 77-bit payload
code, but only the valid 319-bit payload SF transmission on even time
slots.  This code is based on a number of unique signatures of the
authorized DXP station as well as a timestamp as well as Forward Error
Correction (FEC).  So any pirates will not be detected or have any effect
if they are trying to DQRM the SF station.  This will stop them and those
folks wanting to work stations calling the DXP cold in their attempts.  And
the SF module code is not being released to the public for inclusion in the
WSJTx clones.  Of course the normal F/H mode is still available for those
stations that are not authorized to use the SF mode.

As for the SF/SH mode indication, the Super Hound background should change
from red to green once the "K8R verified" is received on your end.  The
latest Developer v240712 fixes this color change.  It's reported that this
sequence should happen more frequently, but sometimes only "K8R" or nothing
is displayed.  After a period of time and no "verified" text makes it
through, the color changes back to red, but does NOT affect your ability to
work the DXP.

FWIW.  I've noticed this season on some bands, if I point my beam about 30
or so degrees off from a DSP's true direction, signals sometimes improve.
Not guaranteed, but enough so that I always give it a try. This is
especially noticeable with the scatter on 6m.  Sometimes due North is the
best choice to work just about anybody on 6m.

73's
George - WB5JJJ
HoIP - 100105
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