April 2008 - AMSAT-BB - mailman.amsat.org

ao27.org possible schedule error?
by Sam KC2LRC 29 Apr '08

29 Apr '08

When setting up to work AO-27 yesterday I noticed that the schedule on ao27.org indicated it would be turning on later than normal, with the bird up in Canada. I went out to catch the pass a minute before the scheduled on time and found that the bird was already on. It switched to TLM within a minute and then turned off. Today I went out for the 2022 pass before my tracking program's indicated AOS. The bird was on as it rose and it stayed on for a good 6-7 mins before going to TLM. When I got back in after it turned off, ao27.org listed analog as the current mode, with over 5 minutes remaining. From what I see, the schedule on ao27.org seems to be 8-10 mins off from actual time. The bird doesn't seem to have changed schedule at all. Can anyone else confirm this? 73, Sam KC2LRC Syracuse, NY - FN13

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Seed Over CHILE Audio
by Raul Romero CA3SOC 29 Apr '08

29 Apr '08

----- Original Message ----- From: Raul Romero CA3SOC To: Amsat-Bb(a)Amsat.Org Sent: Tuesday, April 29, 2008 10:39 PM Subject: Seed Over CHILE Audio Rec in mid Pass Over Chile http://ce3soc.no-ip.org/ 080429_001.wav Rig Icom IC-PCR1500 5 Elem Hor Yagui 73 Raul CA3SOC --------------------------------------------------------------------- "Are you still wasting your time with spam?... There is a solution!" Protected by GIANT Company's Spam Inspector The most powerful anti-spam software available. http://mail.spaminspector.com

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Delfi-C3 not copy over PY land
by Fabio Teixeira Magalhaes 29 Apr '08

29 Apr '08

Hello >From 00:35 to 00:47 04/30/2008 - nothing heard from Delfi-3C over GH70un. 73 es DX Fabio - PY4AJ Amsat 19.748

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Seed Over CHILE Audio
by Raul Romero CA3SOC 29 Apr '08

29 Apr '08

Rec in mid Pass Over Chile http://ce3soc.no-ip.org/ 080429_001.wav Rig Icom IC-PCR1500 5 Elem Hor Yagui 73 Raul CA3SOC --------------------------------------------------------------------- "Are you still wasting your time with spam?... There is a solution!" Protected by GIANT Company's Spam Inspector The most powerful anti-spam software available. http://mail.spaminspector.com

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Delfi-c3 heard, packets printed!
by Mark L. Hammond 29 Apr '08

29 Apr '08

Finally got some packets tonight. 30April2008 0225 UTC from FM05pj, 145.930 MHz, LOUD when it came into the sunlight (S7). RASCAL recorded just shy of 100 packets. RASCAL is a neat piece of software! I also copied packets via the DSP-93/TNC in KISS mode. 73, Mark L. Hammond [N8MH]

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Delfi-C3 over West Malaysia
by Sion Chow Q. C. (9W2QC) 29 Apr '08

29 Apr '08

Dear All, Finally managed to copy Delfi-C3 during a 9 degree elevation pass this morning, 0922 local or 0122 UTC over West Malaysia. Unfortunately, I failed to log into the Delfi server for some reasons - have to check my login again. Also briefly heard SEEDS again on this pass, while Cute-1.7 + APDII was not heard. Is Cute-1.7+APDII continuously transmitting CW telemetry on 437.275 MHz? Captured telemetry are as below. A screenshot of RASCAL is available at http://www.9w2qc.net/amsatbb/delfi30apr0922.jpg from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 af 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 b0 06 96 84 eb ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 3f fb fb 57 77 00 01 01 09 00 00 00 00 3c 00 a0 83 4c 00 a8 0b 80 09 00 58 0d 40 5f 00 28 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 b3 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 b6 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 bb 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 bc 06 96 84 eb ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 3f fb fa 57 63 08 00 01 08 00 00 00 00 3d 00 a0 43 4c 00 a0 0b 80 12 00 84 0d c0 6d 00 78 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 bf 06 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 63 06 c0 06 96 84 eb ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 3f fa fa 58 6a 22 07 00 08 00 00 00 00 3d 00 a0 03 4c 00 38 09 40 12 00 6c 0d c0 63 00 60 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Tuning the downlink for Doppler is indeed not a simple process but luckily still manageable. Have another pass at 1055 local or 0255 UTC where I will attempt to copy again. Both SEEDS and Delfi-C3 were copied using Object C keps. Equipment used, IC-910H, 2x10 Yagi for VHF, 2x15 Yagi for UHF, SB-2000 VHF Preamp and SB-7000 UHF Preamp. All horizontally polarized. WAV or MP3 recording of Delfi-C3 also available on request. 73, Sion Chow Q. C., 9W2QC.

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Delfi-C3
by Alan Cresswell 29 Apr '08

29 Apr '08

It seems that most reports of good Delfi reception relate to northbound passes. So far it appears that Delfi has not been heard in VK/ZL during a number of Southbound sunlit passes despite a number of stations listening and good reception of SEEDS and Cute1.7. Could this be a spacecraft orientation issue or has Delfi just a bit anti Southern hemisphere? Alan ZL2BX

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Delfi still not heard over VK
by David 29 Apr '08

29 Apr '08

Hello All, 23:50 2008/04/29 UTC pass - nothing heard from Delfi-3C over VK. Admittedly I was concentrating on SEEDS, which I did hear very well. Yesterday I checked my setup was working by listening to VO-52's beacon and all is ok. Isn't this fun. 73 de David VK5DG

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DelfiC3 Spin Rate
by Rob Hardenberg PE1ITR 29 Apr '08

29 Apr '08

Hi All, Good DelfiC3 pass here on 2008-04-29 18:20~18:30UTC. Decoded 223 packets with the Rascal software. This time I used automatic doppler correction and tracked object D. I have the impression that DelfiC3 is earlier than object B. As experiment I tried to determine the spinrate of delfic3 and counted the dips in the signal level. Its 12 dips in 1 minute period so the spinrate at the moment must be 12 rpm or some related number (24,6,3.. rpm). See screenshot: http://www.pe1itr.com/satellite/delfic3_pe1itr_29apr2008.jpg 73 Rob PE1ITR http://www.pe1itr.com

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413 packets received from DelfiC3 (TLE +RASCAL screenshot).
by Cor 29 Apr '08

29 Apr '08

Hello All, In the 21:34UTC pass I received 413 packets. Sadly keps are not accurate so I had to search for the strongest signal (I lost sync somethimes). A screenshot of RASCAL software can be seen here: http://pd0rkc.ontwikkel.nl/DELFIC3/29April2008DelfiC3_TLE_orbit26.jpg DelfiC3 telemetry orbit 26: http://pd0rkc.ontwikkel.nl/DELFIC3/29April2008DelfiC3_TLE_orbit26.txt 73's Cor PD0RKC Ham Radio In Space: http://iss.ontwikkel.nl

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