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SUNSAT GOES DIGITAL



SUNSAT NOW ALSO OFFERS DIGITAL SERVICES TO RADIO AMATEURS  

"Sunsat will now also offer digital services", Johann Lochner, ZR1CBC of
the SUNSAT SO35 command team at the University of Stellebosch announced
today.

When the orbit permits the acquisition of high resolution images, image
data will be broadcast in an unconnected AX.25 data stream across the
world.  Radio amateurs can collect data in KISS format and merge it via
the Internet.  This process will reduce the download times of the 50 MB
images considerably.  

Satellite operators with PACSAT stations are invited to join this
project.    Visit Sunsat's web page,
<http://sunsat.ee.sun.ac.za/index.html>, for more information.

Periodic announcements, bulletins, status information and calibrated
telemetry will be transmitted as unconnected AX.25  packets, to be
displayed in human readable format by terminal software.

Digipeating of unconnected AX.25 packets will be activated.  It  could,
for example, be used for relaying low bandwidth APRS data.

These services will be enabled for all non-voice passes over Dayton,
in the USA, during their annual Hamvention from 19 to 21 May.  During
the next few weeks the schedule is to be extended to a continuous
service, except for when the voice repeater is active. 

For South Africa, week-day/night passes will be used by the Sunsat
control station.  On weekends, the voice repeater will operate as at
present.  Typically one pass per day will be used for control purposes. 
On remaining weekend passes, digital services will be  active. 
Schedules are published on the Sunsat web page.

- ZS5AKV  SA AMSAT
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