[Skimmertalk] Sprit Down of Skimmer
martin.rath at gmail.com
Thu Mar 24 02:04:56 EDT 2016
They do indeed use DN so that they dont interfere with the upcoming FT4JA
Sorry, I should have reviewed my own presentation
<http://bit.ly/UsingRBN2015> on this subject. See slide 22. Briefly:
Originally CW Skimmer recognized just: "CQ", "TEST", and "QRZ"
VE3NEA later added "FD", "SS”, "NA" and "UP"
If they are listening down instead of up (can't remember *ever* seeing that
done before), CW Skimmer will *not* recognize "DN" as a "CQ" and they will
not be spotted much.
Thanks to K6MR for the reminder.
On Wed, Mar 23, 2016 at 5:13 PM, Dai NAGAKURA <ndai at cameo.plala.or.jp>
> Thank you Bob , This must be my misunderstanding.
> Just after VK0EK started , Skimmers cannot copy them
> then I thought Skimmer does not recognize callsign
> when DN(DWN) is just before callsign.
> Now I understand algorithm .
> Many thanks
> Dai JF2IWL
> On Wed, 23 Mar 2016 16:48:08 -0700
> "Bob Wilson, N6TV" <n6tv at arrl.net> wrote:
> > I do not understand what you mean by "before DN letter".
> > If they do not send CQ or TEST, or if they send the callsign only once
> > every 10 minutes, or if they send "UP" at a different speed than the
> > callsign, they will rarely if ever be spotted by a CW Skimmer.
> > 73,
> > Bob, N6TV
> > On Wed, Mar 23, 2016 at 11:02 AM, Dai NAGAKURA <ndai at cameo.plala.or.jp>
> > wrote:
> > > World Skimmers cannot caprure VK0EK now
> > > Is CW Skimmer Server does not acaputure callsign before DN letter?
> > >
> > > Dai JF2IWL
> > > --
> > > Dai NAGAKURA <ndai at cameo.plala.or.jp>
> > >
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> > >
> Dai NAGAKURA <ndai at cameo.plala.or.jp>
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