Category: Ham Satellite news

AMSAT-SM is pleased to annonce our donation of 500 Euro to the ARISS atnenna projekt. For more information please see link to ARISS.

Från ANS fick vi följande information om COMPASS:

Mike, DK3WN said this week that a worldwide amateur radio effort saved the COMPASS cubesat.  Mike reports receiving reports of good COMPASS beacons from Japan. The COMPASS cubesat has not reset over several eclipse periods and remains operational.

The problem that depleted the batteries aboard COMPASS had its heater remain on constantly.  Amateur radio stations around the world successfully transmitted the command to turn off the heater and allowed the batteries to recover.

After the heater was turned off Mike wrote, “The only thing we can do is WAIT. Wait for longer sun periods and voltages over 3.47 Volts.
That’s the standard threshold value in emergency mode to switch into powersafe mode. Only in this mode we can change the threshold values.
As of September 8, COMPASS was back in its powersafe mode of oper- ation.

As of September 10 COMPASS was back in NORMAL mode. Mike had gained control of the satellite and could successfully command the satellite.

Mike summarized, “Thanks to all – this is truly a worldwide ham radio effort – thanks so much for your help. Also, PLEASE do NOT send any commands to COMPASS until further notice. If you send any commands you overwrite the current settings and COMPASS may fall back into emergency mode. We almost lost a cubesat, but we’ve definitely gained some new friends. Thank you all for your efforts!”

Meanwhile please listen to the beacon and keep your fingers crossed that COMPASS will remain in its normal mode.

[ANS thanks Mike, DK3WN, for the above information]

Nu finns möjlighet att se videopresentationer från den sammankomst som hölls hos AMSAT-UK under sommaren.

Det här kan vara lämplig höstunderhållning kommande mörka kvällar.

Från ANS kommer följande info:

COMPASS-1 CubeSat in Emergency Mode – Telemetry Reports Needed

Since Sunday, the COMPASS-1 CubeSat has been in emergency mode. The battery voltage is very low and the satellite is rebooting every pass. The CW beacon is on in sunlight – but it only transmits on
8 minute intervals.

Från ANS kommer följande info:

Domenico, I8CVS, provided the following observation of FO-29’s analog
transponder:

Following suggestions of my friend Mak, SV1BSX,  I tried FO-29 the night of 27 July during the South bound orbit 58978. AOS for me in JN70ES was at 00:06 UTC and FO-29 was in sun light.

Från ANS kommer följande info:

Wouter Jan Ubbels, PE4WJ, provided the following status update of the Delfi-C3 / DO-64 satellite on behalf of the Delfi-C3 team.

1. We have concluded the first three months of science mission with great success. A big word of thanks to all amateur radio operators around the world for collecting and forwarding telemetry, sending reception reports and observations, and thanks for all the tremendous support we have received. As of today, we have collected 396564 AX.25 frames through the worldwide network… a truly amazing number. Thank you all so much.

2. Delfi-C3 has been switched to permanent transponder mode during the 10:00 UTC pass on July 29th over the Delfi-C3 ground station in The Netherlands. This means that the spacecraft now boots in transponder mode as soon as the spacecraft exits eclipse. This was verified by a successful OBC database dump shortly after that.