Hi Stefan,

Thank you for your observations! We are still working on the issues and Wouter Jan Ubbels PE4WJ will post a status update when we have more news about Delfi-C3 (DO-64) The startup behavior you mention is indeed caused by the rapid warming up of the internal electronics by switching on the PA. This is normal and was designed for. Delfi-C3 is too small to accommodate an ovenized crystal and this also consumes too much power.

73

Wouter Weggelaar PA3WEG Delfi-C3 Team

On Thu, Jun 12, 2008 at 4:16 AM, Stefan Wagener stefan_wagener@hotmail.com wrote:

My recent observations:

The satellite is still experiencing abrupt termination of telemetry transmission. During ascending passes telemetry is transmitted once satellite comes out of eclipse. Initial signal sometimes rough and 500Hz-1Khz above nominal frequency. Rapid warming will bring signal frequency down to +450 Hz. Sometimes satellite telemetry starts repeatedly after 30 to 40 packets, other times it runs for 100 to 300 packets before abruptly stopping.

Will wait for the Delfi-C3 team to report on their attempts on working this one out.

However, the satellite is working and active.

Stefan, VE4NSA

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