[amsat-bb] ARISSat-1 over West Malaysia 13 Aug 2225 UTC
Dear All, ARISSat-1 was heard over West Malaysia during 13 Aug, 2225 UTC pass. The satellite was first heard in low power mode and subsequently it was in high power mode until LOS. A total of 27 telemetry frames were copied and forwarded, and subsequent replay of the I/Q recordings provided another 3 SSTV images and the following voice telemetry: MET - 10 min IHU Temp - +37C Control Panel Temp - +43C Battery Voltage: 35.58v Battery Current - -16mA (discharging) MET - 12 min IHU Temp - +37C Control Panel Temp - +43C Battery Voltage: 35.74v Battery Current - +4mA (charging) This was the 2nd pass using the FCD with DK3WN's Doppler Control for FCD + HDSDR + ARISStlm for automated copy. The FCD is a simply amazing piece of hardware :) 73, Sion Chow Q. C., 9M2CQC Also: WQ2C /HL1, 9V1QC, JG1XHM, ex: 9W2QC, AB3IO ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] ARISSat-1 over West Malaysia 12 Aug 2325 UTC
Dear All, ARISSat-1 over West Malaysia, 12 Aug at 2325 UTC: 1. Satellite was in high power mode 2. FM downlink was heard very clearly 3. Managed to capture and forward 24 telemetry on the BPSK1000 downlink which was strong Based on telemetry from CW decoder (unfortunately I had my telemetry window in ARISSatTLM software accidentally closed): MET - 9 min IHU Temp - 31C Control Panel Temp - 23C Batt Voltage - 35.90v Batt Current - -8mA However, battery was observed charging later on during the pass. I hope that all will go well for ARISSat-1. 73, Sion Chow Q. C., 9M2CQC Also: WQ2C /HL1, 9V1QC, JG1XHM, ex: 9W2QC, AB3IO ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] ARISSat-1 over West Malaysia 07 Aug 0202 UTC
Dear All, Had a 20 degree elevation pass in sunlight of ARISSat-1 over West Malaysia at 0202 UTC, 07 August 2011. Managed to copy and forward 21 telemetry and kursk frames to the ARISSatTLM server, and this time I had SATPC32 adjust the doppler in 10 Hz steps. Although the doppler correction seems to be a bit too frequent, but it made the CW signal stay on the yellow marker fairly accurately. However, due to fading only 21 frames were copied. I guess the copying would be better if the fading rate is reduced. Still experimenting with this mode, and hope that the above will be useful to someone. Also noticed from previous observations that it is difficult to get a lock when the satellite is in low power eclipse mode, as the TX gets turned off too quickly. Have a great weekend to all. 73, Sion Chow Q. C., 9M2CQC, Also: WQ2C /HL1, 9V1QC, JG1XHM, ex: 9W2QC, AB3IO ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] ARISSat-1 over West Malaysia
Dear All, It was great to receive ARISSsat-1 over West Malaysia during 5th August 2011, 0223 UTC pass. Maximum elevation was 89 degrees. The downlink of both 145.919 MHz USB and 145.950 MHz FM was 59+60db, very strong but with huge QSB observed. A total of 3 SSTV pictures were forwarded to the ARISS SSTV gallery and some telemetry/Kursk data were forwarded by ARISSatTLM. Congratulations to all those involved with ARISSsat-1 and we look forward to trying out the transponder on the next pass. A few questions I have if someone could please help me clarify them: 1. Is it possible to have the callsign and forwarding telemetry option always set in ARISSsatTLM? This way, we do not have to manually enter the callsign and enable telemetry forwarding each time the program starts up. 2. Does the CW beacon needs to be really +/- 100 Hz of the yellow line? The reason for this is that I would like to see how much offset should I apply to doppler control, for possible automated reception. 3. In low power (eclipse) mode, how often does the BPSK1000 telemetry transmits? Thank you. 73, Sion Chow Q. C., 9M2CQC, Also: WQ2C /HL1, 9V1QC, JG1XHM ex: 9W2QC, AB3IO ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
