Category Archives: Satellite

Satellite Category

ISS SSTV – weekend of July 18

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ARISS SSTV images were transmitted this weekend from the amateur radio station in the ISS Russian Service Module to commemorate the 40th Anniversary of the Apollo-Soyuz Mission.

40 years ago this week, the historic joint Apollo-Soyuz mission was conducted. Apollo-Soyuz (or Soyuz-Apollo in Russia) represented the first joint USA-Soviet mission and set the stage for follow-on Russia-USA space collaboration on the Space Shuttle, Mir Space Station and the International Space Station.

Below images that where received during the night between the 18th and the 19th of July with a FUNcube Dongle Pro+, SDR# and RX-SSTV.

ISS-SSTV-19072015

ISS-SSTV-19072015

ISS-SSTV-19072015

ISS-SSTV-19072015

ISS-SSTV-19072015

deOrbitSail successful launch

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deOrbitSail is successfully launched and first telemetry data is received. I used the WebSDR in Johannesburg South Africa to receive the first signals and in the second pass over South Africa I was able to decode the 1200bps BPSK signals.

deOrbitSail WebSDR

Then at 21:10 UTC deOrbitSail was also in range of my own ground station and I could decode over 39 frames.

deOrbitSail-SDR

I used the following setup: SatPC32, FUNcube Dongle Pro+, SDR#, UZ7HO Sound modem and AGW OnlineKiss. (145.975 USB +/- Doppler)

Delfi-C3 (DO-64) update Rascal

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Delfi-C3 Telemetry Reception

NEW SERVER SETTINGS (July 2015)

Delfi-C3-RascalOn 8 July 2015, the Delfi-C3 telemetry server will be migrated to a new environment. This also means that the RASCAL server settings need to be changed.

The transition will take place during the 8th of July. On this day both servers will not be offline for 4 -8 hours to be able to migrate the databases. The local repository of the RASCAL telemetry client frames should be sufficient to avoid data loss for the downtime. Our advice is to add the new server as primary/secondary server before the 8th and remove the old server after we have notified that the migration is successful.

New IP: 131.180.122.144
Port: 1099

Source: http://www.delfispace.nl/operations/delfi-c3-telemetry-reception

AO-27 update 07-07-2015

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AO-27 active update.

Update: It isn’t active yet!

It has not yet been recovered. The command team turned the transmitter on to test it out on June 28th, but they still need to upload the secondary boot-loader and then the high level code necessary to operate the satellite. The issue in the past has been that the satellite crashes when they try to run high level code. We will see if they’ve managed to work around that problem (probably radiation damage to a section of the satellite’s memory).

Please do not transmit unless you hear the FM repeater functioning. Any interference while the command team is attempting to upload new code will significantly prolong the recovery process.

Source: N8HM (07-07-2015 12:48 UTC)

Amrad Oscar AO-27 PreFlightAfter I had read the news on the Amsat-BB about AO-27 being active again, I visited the AO-27 website and found the following information.

June 28, 2015:
AO-27 Turned on today. Seems good on the bootloader. If anyone has contacts into CelesTrak to get AO-27 back into the amateur.txt file it would help some of the control operators stations. Our e-mails have gone unanswered.

  • Michael, N3UC
  • Dan, KM4HZJ
  • James, N3UCC

April 18, 2015:
AO-27 Turned on today. Uploaded Secondary boot loader

  • Michael, N3UC

April 12, 2015:
Turned on High power to check power output. Looks good.

  • Michael, N3UC

Lets listen for the satellite, decode some telemetry and pass it on to the operators so they have a clear idea about the health of AO-27 (EYESAT-1). Don’t transmit unless you hear the FM repeater functioning.

Current Space-Track TLE:

AO-27
1 22825U 93061C   15186.11965546  .00000058  00000-0  40075-4 0  9999
2 22825 098.7096 136.2347 0007264 255.0254 170.5745 14.29889618135507

AO-27-Orbit

Modes

Analogue Low  = 145.850MHz Up <==> 10mW 436.797MHz Down
Analogue Med  = 145.850MHz Up <==> 500mW 436.797MHz Down
Analogue High = 145.850MHz Up <==> 4W 436.797MHz Down

Digital Low   = NO Up          ==> 10mW 436.797MHz AFSK 1200bps Down
Digital Med   = NO Up          ==> 500mW 436.797MHz AFSK 1200bps Down
Digital High  = NO Up          ==> 4W 436.797MHz AFSK 1200bps Down

UWE-3 update 03-07-2015

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UWE-3 Status report

UWE-3 redundant UHF SubSystem

After the communication anomaly and the autonomous recovery of UWE-3 two weeks ago we uploaded an extended software to the OBC to analyze the event in detail. As we already have known the EPS, OBC and ADCS were not affected, so the secondary radio.

During the tests made possible by the new software we temporarily switched back to the primary radio to check its electrical characteristics and communication performance. As the values were promisingly normal we performed extensive communication tests without seeing any existing anomaly. Therefore we will continue normal operation.