[amsat-bb] DUCHIFAT1 - first 'Compressed APRS' tests

Steve Kristoff skristof at etczone.com
Thu May 21 16:38:09 UTC 2015

I believe that I have the software for Duchifat up and running since you
made the new version with .exe files available.
On the most recent pass, a few minutes ago, I heard the Morse ID, but I was
unable to decode any packets.
The problem is probably my receiving system not being sensitive enough.
Morse ID for Duchifat heard about 1630 UTC.

Steve AI9IN
Grid EM79ji

On Thu, May 21, 2015 at 9:57 AM, Herzliya Science Center <4x4hsc at gmail.com>

> Dear all,
> We have experienced some problems in the registration process at our web
> site.  Our students are working on fixing these problems and we estimate
> this might take a few days.
> We appologize for the difficulties some of you have experienced and we
> appreciate your patience.
> Please do not give up, and try again after we will notify you that the
> problems are solved.
> In the mean time you are welcome to try to receive and decode the
> satellite, send us telemetry, and prepare your setup for sending COMPRESSED
> APRS packets to DUCHIFAT1 after we will fix the registration issues.
> (packets must be 14 bytes long "COMPRESSED APRS".  Regular APRS or MIC-E
> won't work here.)
> 73 from 4X4HSC,
> The Herzliya Science Center radio teachers - Shamai 4Z1WS and David 4X1DG
>  בתאריך 19 במאי 2015 23:22, "Herzliya Science Center" <4x4hsc at gmail.com>
> כתב:
> > Hi all,
> > DUCHIFAT1, the Israeli high school students 1U Cubesat is ready for first
> > public tests.
> > People with the ability to send Compressed APRS location packets are
> > invited to join the tests.
> > The satellite will collect these packets worldwide along its flight at
> > 620km high orbit, and will downlink them from time to time over our
> ground
> > station in Herzliya/Israel.
> > Participants are kindly requested to register in advance in order to get
> > their packet identified on the map.
> > The packets successfully received will be displayed on a map in our
> > Internet site and  QSL cards will be sent via Bureau to the stations
> > registered and recognized. (unfortunately, there is no way we can
> recognize
> > packets from unregistered stations because the packet is limited to 14
> > character at the satellite, so we assign two unique characters to every
> > registered station to enable us to identify them).
> >
> > Registration can be done at www.h-space-lab.org
> >
> > Also available in that site are operational information about the
> > satellite, and the following documents:
> >
> > *Configuring TT4 Explanation.doc* - how to use the Byonics TinyTrak4 for
> > generating Compressed APRS packets
> >
> > *Terms Of Use.doc* - terms and techniques for making the best use of the
> > satellite
> >
> > There is also Ground station software available for download, written by
> > our students around ISIS space Demodulator software.
> >
> > We hope many people will find it interesting and enjoyable,
> >
> > good luck!
> > 73
> > from the Herzliya Science Center students and teachers
> >
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