[Skimmertalk] Sprit Down of Skimmer

[Dai NAGAKURA]

de JF2IWL

> They do indeed use DN so that they dont interfere with the upcoming FT4JA
> expedition.

Yes it is.

That's because SkimmerServer can hardly capture VK0EK's singal
as Bob says that {Callsign}+ DN is not recognized as CQ station, isn't it?

Dai JF2IWL


On Thu, 24 Mar 2016 14:04:56 +0800
Martin Rath <martin.rath at gmail.com> wrote:

> Hi,
> 
> They do indeed use DN so that they dont interfere with the upcoming FT4JA
> expedition.
> 
> http://vk0ek.org/the-plan/
> 
> 73's Martin
> 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.
> 
> 73,
> Bob, N6TV
> 
> On Wed, Mar 23, 2016 at 5:13 PM, Dai NAGAKURA <ndai at cameo.plala.or.jp>
> wrote:
> 
> > 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>
> > > >
> > > > _______________________________________________
> > > > Skimmertalk mailing list
> > > > Skimmertalk at contesting.com
> > > > http://dayton.contesting.com/mailman/listinfo/skimmertalk
> > > >
> >
> > --
> > Dai NAGAKURA <ndai at cameo.plala.or.jp>
> >
> >
> _______________________________________________
> Skimmertalk mailing list
> Skimmertalk at contesting.com
> http://dayton.contesting.com/mailman/listinfo/skimmertalk

-- 
Dai NAGAKURA <ndai at cameo.plala.or.jp>