[amsat-bb] SO-50's ELEVENTH Birthday!
Happy Birthday wishes and Greetings to SO-50. Good wishes for a long and healthy life. May the fruitful services of SO-50 be available for very long. 73 de Mani [VU2WMY/KJ6LRS] Director, Educational Relations AMSAT-India No:201, 2nd Main Road Mahalakshmi Layout Bangalore-560 086 Phone:(Office)91-80-25082598/25082054/25082192 Mobile: 91-9880 341 456 E-mail ID: w...@isac.gov.in vu2wmy_m...@yahoo.com isroh...@yahoo.com -- Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -- ___ 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] SO-50's ELEVENTH Birthday!
It is SO-50's ELEVENTH birthday! Read on for how YOU can celebrate! Now known as SO-50, Saudisat 1C is a Saudi Arabian picosatellite that was launched by a Dnepr rocket from Baikonur at 17:00 UT on December 20, 2002. SO-50 features a "Mode J" FM amateur repeater operating on a 2M uplink and a 440 downlink. "Most hams already own the necessary equipment to work SO-50," reports Clint Bradford, K6LCS, who maintains a Web site devoted to working amateur satellites with minimal equipment (http://www.work-sat.com). "It is preferable to work SO-50 in true, full-duplex mode - so you can hear the downlink as you transmit. This means - for most - using a second radio or the Kenwood TH-D72A and its true full-duplex capability. The new Puxing PX-UV973 is currently being tested in this mode, too, to see how it works on the satellites." SO-50's repeater is available to amateurs worldwide, and it uses a 67.0 Hertz PL tone on the uplink. SO-50 also has a 10 minute timer that must be armed before use. If you know the satellite is there - but there is nothing heard - you may need to shoot it a PL tone of 74.4 to turn it ON! The repeater consists of a miniature VHF receiver with sensitivity of -124dBm, with an IF bandwidth of 15 KHz. The receive antenna is a 1/4 wave vertical mounted in the top corner of the spacecraft. Its UHF transmitter is a mere 250 mW, and downlink antenna is a 1/4 wave mounted in the bottom corner of the spacecraft and canted at 45 degrees inward. "Hams just with Technician licenses can work the satellite," Clint continues. "We are talking about weak signals from 500 miles away - so improving both your TX and RX antennas is critical for success on this satellite." Plans for making tape measure beams and other inexpensive, high-gain antennas is also on his Web site. "Do not forget to accommodate for the Doppler phenomenon on the 440 receive side." Complete details - including frequency chart and sources for knowing when the satellite will be over your area, are also on Clint's Web site. /end/ ___ 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] Re: Object IDs
The Fun Cube site seems to be making every effort to provide timely info. Logic would suggest checking that site daily. Updated info on tle's is there in plain view GL, Ted K7TRK -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Rick Tejera Sent: Wednesday, December 18, 2013 7:15 AM To: 'Nico Janssen'; 'Mike Rupprecht'; amsat-bb@amsat.org Subject: [amsat-bb] Re: Object IDs I'd thought that AO-73 had been confirmed as object 66B. has this been refined? I guess I need to update my settings in SATpc Rick Tejera Saguaro Astronomy Club www.saguaroastro.org Thunderbird Amateur radio Club (K7TEJ) www.w7tbc.org -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Nico Janssen Sent: Wednesday, December 18, 2013 7:00 AM To: Mike Rupprecht; amsat-bb@amsat.org Subject: [amsat-bb] Re: Object IDs Hi Mike, Thanks for the confirmation of the 'tbc's. This picture shows the measured doppler curve of an overhead evening pass of OSCAR 73, plotted against the calculated curves for objects 39444 and 39445. These objects were about 11 s apart (i.e. about 82 km). https://thumb5.wuala.com/previewImage/SharedInfo/Space/AO73_20131216.jpg/?ke y=IZKufoz9U1Uo Note the temperature related frequency drift on the beacon transmitter, which causes frequency deviations when using automatic doppler correction. To be able to create useful doppler curves it would help if all Cubesats would transmit a *continuous* carrier signal on a *constant* frequency... ;-) Still a lot of IDs are unknown. Of all the objects from the Minotaur launch, only three are officially identified: 39380 2013-064A STPSat 3 39388 2013-064J SENSE SV1 39392 2013-064N SENSE SV2 It is suggested that Cape 2 is object 39382 (2013-064C) and that KySat 2 is object 39383 (2013-064D). These are to be confirmed. 73, Nico PA0DLO On 2013-12-17 22:13, Mike Rupprecht wrote: > Thanks Nico, PA0DLO for pointing me in the rigth direction. I agree > with you the TLE for the cubesats: > > 39436 2013-066W Eagle 2 ($50Sat) ok > 39438 2013-066Y Velox PII ok > 39439 2013-066Z First-MOVE ok > 39440 2013-066AA CubeBug 2 ok > 39444 2013-066AE AMSAT-OSCAR ok :-) > 39445 2013-066AF HiNCube ? > 39446 2013-066AG UWE 3 ok > > Just made a deep analysis with the FunCube TLE (Object AE vs. AF). The > pass was not very high but every seconds I switched between the TLE AE > and AF. > You can see a slightly differnce (only a few Hz) at TCA what leads me > to say > - your're right. FUNCube-1 seems indeed to be Object AE. > > http://www.dk3wn.info/p/?p=39682 > > > 73 Mike > DK3WN > > -Ursprüngliche Nachricht- > Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im > Auftrag von Nico Janssen > Gesendet: Dienstag, 17. Dezember 2013 14:32 > An: amsat-bb@amsat.org > Betreff: [amsat-bb] Re: Object IDs > > All, > > Further doppler measurements show that TshepisoSat (aka ZACube 1) is > object > 39417 (2013-066B) and AMSAT-OSCAR 73 (aka FUNCube 1) is object > 39444 (2013-066AE). Therefore HiNCube must be object 39445 (2013-066AF). > > It is not easy to get a good doppler curve with many Cubesats because > of the limited transmissions and because of the frequency drift of > their beacon transmitters. > > These object IDs from the Dnepr launch seem to be correct, although > some still need to be confirmed (tbc): > > 39416 2013-066A Aprizesat 7 > 39417 2013-066B TshepisoSat > 39418 2013-066C Skysat 1 > 39419 2013-066D Dubaisat 2 > 39421 2013-066F Unisat 5 > 39422 2013-066G STSat 3 > 39423 2013-066H WNISat 1 > 39425 2013-066K Aprizesat 8 > 39427 2013-066M Triton 1 > 39428 2013-066N Delfi-n3Xt > 39429 2013-066P Dove 3 > 39430 2013-066Q GomX 1 > 39431 2013-066R BRITE-PL > 39432 2013-066S HumSat D (tbc) > 39436 2013-066W Eagle 2 ($50Sat) (tbc) > 39438 2013-066Y Velox PII (tbc) > 39439 2013-066Z First-MOVE (tbc) > 39440 2013-066AA CubeBug 2 (tbc) > 39444 2013-066AE AMSAT-OSCAR 73 > 39445 2013-066AF HiNCube > 39446 2013-066AG UWE 3 (tbc) > > 73, > Nico PA0DLO > > > On 2013-12-01 16:25, Nico Janssen wrote: >> All, >> >> An update on the satellite IDs. >> >> Still no IDs are available for the satellites launched from the ISS >> (except TechEdSat 3P) and the Minotaur. >> >> Several IDs have been published for the objects from the Dnepr launch >> but many need to be confirmed. Still not all TLEs are released. >> >> AMSAT-OSCAR 73, ZACube 1 and HiNCube were launched from the same ISIPOD. >> As they initially were close together, the JSpOC decided to release >> only one TLE set for this cluster under object number 39417 >> (2013-066B). Now the distances between these satellites are slowly >> increasing. So the question is which satellite is object 39417. >> Detailed doppler measurements show that ZACube 1 is now about 25 s >> early compared to the TLE for object 39417, while OSCAR 73 is about >> 11 s early. This seems to indicate that object
[amsat-bb] CAPE-2
Hi Cape-2 heard today 12:30 UTC over Brazil . https://www.youtube.com/watch?v=hcGMqaa8BPo 73 PY5LF Luciano Fabricio Curitiba-PR-BR GG54jm http://www.qrz.com/db/PY5LF ___ 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] help with cape ii
Today I gave several commands to set green mode, but he remained in pink ... He also responded to a Send Text to Spech command: http://www.qsl.net/py4zbz/cape.htm#e 73 de Roland PY4ZBZ. ___ 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] Re: Object IDs
Hi all, The story so far! The first object number that was issued for the contents of ISIPOD-1 - ie HinCube, FUNcube-1 and ZAcube was 2013-066B Some days later, 2 new objects were identified -2013-66AE and 2013-066AF. Generally we thought that the best fit for FUNcube-1 was object 2013-066AF but more recent evaluations by our expert trackers now shows that FUNcube-1 is most probably 2103-066AE. They are still only about 100km apart after almost a month in orbit. So we have been correct to hang back a bit before making any claims! The FUNcube team will monitor results for just a little longer before doing so. thanks Graham G3VZV -Original Message- From: Rick Tejera Sent: Wednesday, December 18, 2013 3:15 PM To: 'Nico Janssen' ; 'Mike Rupprecht' ; amsat-bb@amsat.org Subject: [amsat-bb] Re: Object IDs I'd thought that AO-73 had been confirmed as object 66B. has this been refined? I guess I need to update my settings in SATpc Rick Tejera Saguaro Astronomy Club www.saguaroastro.org Thunderbird Amateur radio Club (K7TEJ) www.w7tbc.org -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Nico Janssen Sent: Wednesday, December 18, 2013 7:00 AM To: Mike Rupprecht; amsat-bb@amsat.org Subject: [amsat-bb] Re: Object IDs Hi Mike, Thanks for the confirmation of the 'tbc's. This picture shows the measured doppler curve of an overhead evening pass of OSCAR 73, plotted against the calculated curves for objects 39444 and 39445. These objects were about 11 s apart (i.e. about 82 km). https://thumb5.wuala.com/previewImage/SharedInfo/Space/AO73_20131216.jpg/?ke y=IZKufoz9U1Uo Note the temperature related frequency drift on the beacon transmitter, which causes frequency deviations when using automatic doppler correction. To be able to create useful doppler curves it would help if all Cubesats would transmit a *continuous* carrier signal on a *constant* frequency... ;-) Still a lot of IDs are unknown. Of all the objects from the Minotaur launch, only three are officially identified: 39380 2013-064A STPSat 3 39388 2013-064J SENSE SV1 39392 2013-064N SENSE SV2 It is suggested that Cape 2 is object 39382 (2013-064C) and that KySat 2 is object 39383 (2013-064D). These are to be confirmed. 73, Nico PA0DLO On 2013-12-17 22:13, Mike Rupprecht wrote: Thanks Nico, PA0DLO for pointing me in the rigth direction. I agree with you the TLE for the cubesats: 39436 2013-066W Eagle 2 ($50Sat) ok 39438 2013-066Y Velox PII ok 39439 2013-066Z First-MOVE ok 39440 2013-066AA CubeBug 2 ok 39444 2013-066AE AMSAT-OSCAR ok :-) 39445 2013-066AF HiNCube ? 39446 2013-066AG UWE 3 ok Just made a deep analysis with the FunCube TLE (Object AE vs. AF). The pass was not very high but every seconds I switched between the TLE AE and AF. You can see a slightly differnce (only a few Hz) at TCA what leads me to say - your're right. FUNCube-1 seems indeed to be Object AE. http://www.dk3wn.info/p/?p=39682 73 Mike DK3WN -Ursprüngliche Nachricht- Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im Auftrag von Nico Janssen Gesendet: Dienstag, 17. Dezember 2013 14:32 An: amsat-bb@amsat.org Betreff: [amsat-bb] Re: Object IDs All, Further doppler measurements show that TshepisoSat (aka ZACube 1) is object 39417 (2013-066B) and AMSAT-OSCAR 73 (aka FUNCube 1) is object 39444 (2013-066AE). Therefore HiNCube must be object 39445 (2013-066AF). It is not easy to get a good doppler curve with many Cubesats because of the limited transmissions and because of the frequency drift of their beacon transmitters. These object IDs from the Dnepr launch seem to be correct, although some still need to be confirmed (tbc): 39416 2013-066A Aprizesat 7 39417 2013-066B TshepisoSat 39418 2013-066C Skysat 1 39419 2013-066D Dubaisat 2 39421 2013-066F Unisat 5 39422 2013-066G STSat 3 39423 2013-066H WNISat 1 39425 2013-066K Aprizesat 8 39427 2013-066M Triton 1 39428 2013-066N Delfi-n3Xt 39429 2013-066P Dove 3 39430 2013-066Q GomX 1 39431 2013-066R BRITE-PL 39432 2013-066S HumSat D (tbc) 39436 2013-066W Eagle 2 ($50Sat) (tbc) 39438 2013-066Y Velox PII (tbc) 39439 2013-066Z First-MOVE (tbc) 39440 2013-066AA CubeBug 2 (tbc) 39444 2013-066AE AMSAT-OSCAR 73 39445 2013-066AF HiNCube 39446 2013-066AG UWE 3 (tbc) 73, Nico PA0DLO On 2013-12-01 16:25, Nico Janssen wrote: All, An update on the satellite IDs. Still no IDs are available for the satellites launched from the ISS (except TechEdSat 3P) and the Minotaur. Several IDs have been published for the objects from the Dnepr launch but many need to be confirmed. Still not all TLEs are released. AMSAT-OSCAR 73, ZACube 1 and HiNCube were launched from the same ISIPOD. As they initially were close together, the JSpOC decided to release only one TLE set for this cluster under object number 39417 (2013-066B). Now the distances between these satellites are slowly increasing. So the question is wh
[amsat-bb] Re: Object IDs
Hi Nico, Thanks. I use #39388 (Object J) for KySat-2 and 393882 (Object C) for CAPE-2. 73 Mike DK3WN -Ursprüngliche Nachricht- Von: Nico Janssen [mailto:ham...@xs4all.nl] Gesendet: Mittwoch, 18. Dezember 2013 15:00 An: Mike Rupprecht; amsat-bb@amsat.org Betreff: Re: [amsat-bb] Re: Object IDs Hi Mike, Thanks for the confirmation of the 'tbc's. This picture shows the measured doppler curve of an overhead evening pass of OSCAR 73, plotted against the calculated curves for objects 39444 and 39445. These objects were about 11 s apart (i.e. about 82 km). https://thumb5.wuala.com/previewImage/SharedInfo/Space/AO73_20131216.jpg/?ke y=IZKufoz9U1Uo Note the temperature related frequency drift on the beacon transmitter, which causes frequency deviations when using automatic doppler correction. To be able to create useful doppler curves it would help if all Cubesats would transmit a *continuous* carrier signal on a *constant* frequency... ;-) Still a lot of IDs are unknown. Of all the objects from the Minotaur launch, only three are officially identified: 39380 2013-064A STPSat 3 39388 2013-064J SENSE SV1 39392 2013-064N SENSE SV2 It is suggested that Cape 2 is object 39382 (2013-064C) and that KySat 2 is object 39383 (2013-064D). These are to be confirmed. 73, Nico PA0DLO On 2013-12-17 22:13, Mike Rupprecht wrote: > Thanks Nico, PA0DLO for pointing me in the rigth direction. I agree > with you the TLE for the cubesats: > > 39436 2013-066W Eagle 2 ($50Sat) ok > 39438 2013-066Y Velox PII ok > 39439 2013-066Z First-MOVE ok > 39440 2013-066AA CubeBug 2 ok > 39444 2013-066AE AMSAT-OSCAR ok :-) > 39445 2013-066AF HiNCube ? > 39446 2013-066AG UWE 3 ok > > Just made a deep analysis with the FunCube TLE (Object AE vs. AF). The > pass was not very high but every seconds I switched between the TLE AE and AF. > You can see a slightly differnce (only a few Hz) at TCA what leads me > to say > - your're right. FUNCube-1 seems indeed to be Object AE. > > http://www.dk3wn.info/p/?p=39682 > > > 73 Mike > DK3WN > > -Ursprüngliche Nachricht- > Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im > Auftrag von Nico Janssen > Gesendet: Dienstag, 17. Dezember 2013 14:32 > An: amsat-bb@amsat.org > Betreff: [amsat-bb] Re: Object IDs > > All, > > Further doppler measurements show that TshepisoSat (aka ZACube 1) is > object > 39417 (2013-066B) and AMSAT-OSCAR 73 (aka FUNCube 1) is object > 39444 (2013-066AE). Therefore HiNCube must be object 39445 (2013-066AF). > > It is not easy to get a good doppler curve with many Cubesats because > of the limited transmissions and because of the frequency drift of > their beacon transmitters. > > These object IDs from the Dnepr launch seem to be correct, although > some still need to be confirmed (tbc): > > 39416 2013-066A Aprizesat 7 > 39417 2013-066B TshepisoSat > 39418 2013-066C Skysat 1 > 39419 2013-066D Dubaisat 2 > 39421 2013-066F Unisat 5 > 39422 2013-066G STSat 3 > 39423 2013-066H WNISat 1 > 39425 2013-066K Aprizesat 8 > 39427 2013-066M Triton 1 > 39428 2013-066N Delfi-n3Xt > 39429 2013-066P Dove 3 > 39430 2013-066Q GomX 1 > 39431 2013-066R BRITE-PL > 39432 2013-066S HumSat D (tbc) > 39436 2013-066W Eagle 2 ($50Sat) (tbc) > 39438 2013-066Y Velox PII (tbc) > 39439 2013-066Z First-MOVE (tbc) > 39440 2013-066AA CubeBug 2 (tbc) > 39444 2013-066AE AMSAT-OSCAR 73 > 39445 2013-066AF HiNCube > 39446 2013-066AG UWE 3 (tbc) > > 73, > Nico PA0DLO > > > On 2013-12-01 16:25, Nico Janssen wrote: >> All, >> >> An update on the satellite IDs. >> >> Still no IDs are available for the satellites launched from the ISS >> (except TechEdSat 3P) and the Minotaur. >> >> Several IDs have been published for the objects from the Dnepr launch >> but many need to be confirmed. Still not all TLEs are released. >> >> AMSAT-OSCAR 73, ZACube 1 and HiNCube were launched from the same ISIPOD. >> As they initially were close together, the JSpOC decided to release >> only one TLE set for this cluster under object number 39417 >> (2013-066B). Now the distances between these satellites are slowly >> increasing. So the question is which satellite is object 39417. >> Detailed doppler measurements show that ZACube 1 is now about 25 s >> early compared to the TLE for object 39417, while OSCAR 73 is about >> 11 s early. This seems to indicate that object 39417 is actually HiNCube. >> Hopefully TLEs for OSCAR 73 and ZACube 1 will be published soon. >> >> 73, >> Nico PA0DLO >> >> >> On 2013-11-23 11:32, Nico Janssen wrote: >>> All, >>> >>> An overview of the presently known IDs for the satellites that have >>> been launched recently. >>> >>> ISS JSSOD Cubesat launches >>> 2013-11-19 12:18 UTC >>> 39412 1998-067DA Pico Dragon ? >>> 39413 1998-067DB ArduSat 1 ? >>> 39414 1998-067DC ArduSat X ? >>> To be confirmed when the objects have more separation. >>> 2013-11-20 07:58 UTC >>> 39415 1998-067DD TechEdSat 3P >>> >>> Minotaur 1, Wallops Flight Facility
[amsat-bb] Re: CAPE-2 spoke to me with the voice of Darth Vader!
Hi all, Roland, good work¡¡ thanks for the info, today I also heard the CAPE-2 with good signals, AX.25, CW and voice message. The information is in Spanish language, but it is easy;-) http://espaysat.blogspot.com/ Carles Roy http://espaysat.blogspot.com/ eb...@eb3sa.com www.eb3sa.com - Original Message - From: "Roland Zurmely" To: "AMSAT" Sent: Monday, December 16, 2013 9:29 PM Subject: [amsat-bb] CAPE-2 spoke to me with the voice of Darth Vader! Please see here, CAPE-2 responding to a "Send Text to Speech" command: "Hello P Y 4 Z B Z" http://www.qsl.net/py4zbz/cape.htm#d 73 de Roland PY4ZBZ. ___ 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 ___ 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] Re: *AMSAT* on Echolink
On Dec 17, 2013, at 4:52 PM, Bruce wrote: > it appears that the conference *AMSAT* on Echolink is no longer working. Fixed. The Echolink conference server had to be manually restarted after a reboot. 73 -Paul kb...@amsat.org ___ 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] Re: Object IDs
I'd thought that AO-73 had been confirmed as object 66B. has this been refined? I guess I need to update my settings in SATpc Rick Tejera Saguaro Astronomy Club www.saguaroastro.org Thunderbird Amateur radio Club (K7TEJ) www.w7tbc.org -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Nico Janssen Sent: Wednesday, December 18, 2013 7:00 AM To: Mike Rupprecht; amsat-bb@amsat.org Subject: [amsat-bb] Re: Object IDs Hi Mike, Thanks for the confirmation of the 'tbc's. This picture shows the measured doppler curve of an overhead evening pass of OSCAR 73, plotted against the calculated curves for objects 39444 and 39445. These objects were about 11 s apart (i.e. about 82 km). https://thumb5.wuala.com/previewImage/SharedInfo/Space/AO73_20131216.jpg/?ke y=IZKufoz9U1Uo Note the temperature related frequency drift on the beacon transmitter, which causes frequency deviations when using automatic doppler correction. To be able to create useful doppler curves it would help if all Cubesats would transmit a *continuous* carrier signal on a *constant* frequency... ;-) Still a lot of IDs are unknown. Of all the objects from the Minotaur launch, only three are officially identified: 39380 2013-064A STPSat 3 39388 2013-064J SENSE SV1 39392 2013-064N SENSE SV2 It is suggested that Cape 2 is object 39382 (2013-064C) and that KySat 2 is object 39383 (2013-064D). These are to be confirmed. 73, Nico PA0DLO On 2013-12-17 22:13, Mike Rupprecht wrote: > Thanks Nico, PA0DLO for pointing me in the rigth direction. I agree > with you the TLE for the cubesats: > > 39436 2013-066W Eagle 2 ($50Sat) ok > 39438 2013-066Y Velox PII ok > 39439 2013-066Z First-MOVE ok > 39440 2013-066AA CubeBug 2 ok > 39444 2013-066AE AMSAT-OSCAR ok :-) > 39445 2013-066AF HiNCube ? > 39446 2013-066AG UWE 3 ok > > Just made a deep analysis with the FunCube TLE (Object AE vs. AF). The > pass was not very high but every seconds I switched between the TLE AE and AF. > You can see a slightly differnce (only a few Hz) at TCA what leads me > to say > - your're right. FUNCube-1 seems indeed to be Object AE. > > http://www.dk3wn.info/p/?p=39682 > > > 73 Mike > DK3WN > > -Ursprüngliche Nachricht- > Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im > Auftrag von Nico Janssen > Gesendet: Dienstag, 17. Dezember 2013 14:32 > An: amsat-bb@amsat.org > Betreff: [amsat-bb] Re: Object IDs > > All, > > Further doppler measurements show that TshepisoSat (aka ZACube 1) is > object > 39417 (2013-066B) and AMSAT-OSCAR 73 (aka FUNCube 1) is object > 39444 (2013-066AE). Therefore HiNCube must be object 39445 (2013-066AF). > > It is not easy to get a good doppler curve with many Cubesats because > of the limited transmissions and because of the frequency drift of > their beacon transmitters. > > These object IDs from the Dnepr launch seem to be correct, although > some still need to be confirmed (tbc): > > 39416 2013-066A Aprizesat 7 > 39417 2013-066B TshepisoSat > 39418 2013-066C Skysat 1 > 39419 2013-066D Dubaisat 2 > 39421 2013-066F Unisat 5 > 39422 2013-066G STSat 3 > 39423 2013-066H WNISat 1 > 39425 2013-066K Aprizesat 8 > 39427 2013-066M Triton 1 > 39428 2013-066N Delfi-n3Xt > 39429 2013-066P Dove 3 > 39430 2013-066Q GomX 1 > 39431 2013-066R BRITE-PL > 39432 2013-066S HumSat D (tbc) > 39436 2013-066W Eagle 2 ($50Sat) (tbc) > 39438 2013-066Y Velox PII (tbc) > 39439 2013-066Z First-MOVE (tbc) > 39440 2013-066AA CubeBug 2 (tbc) > 39444 2013-066AE AMSAT-OSCAR 73 > 39445 2013-066AF HiNCube > 39446 2013-066AG UWE 3 (tbc) > > 73, > Nico PA0DLO > > > On 2013-12-01 16:25, Nico Janssen wrote: >> All, >> >> An update on the satellite IDs. >> >> Still no IDs are available for the satellites launched from the ISS >> (except TechEdSat 3P) and the Minotaur. >> >> Several IDs have been published for the objects from the Dnepr launch >> but many need to be confirmed. Still not all TLEs are released. >> >> AMSAT-OSCAR 73, ZACube 1 and HiNCube were launched from the same ISIPOD. >> As they initially were close together, the JSpOC decided to release >> only one TLE set for this cluster under object number 39417 >> (2013-066B). Now the distances between these satellites are slowly >> increasing. So the question is which satellite is object 39417. >> Detailed doppler measurements show that ZACube 1 is now about 25 s >> early compared to the TLE for object 39417, while OSCAR 73 is about >> 11 s early. This seems to indicate that object 39417 is actually HiNCube. >> Hopefully TLEs for OSCAR 73 and ZACube 1 will be published soon. >> >> 73, >> Nico PA0DLO >> >> >> On 2013-11-23 11:32, Nico Janssen wrote: >>> All, >>> >>> An overview of the presently known IDs for the satellites that have >>> been launched recently. >>> >>> ISS JSSOD Cubesat launches >>> 2013-11-19 12:18 UTC >>> 39412 1998-067DA Pico Dragon ? >>> 39413 1998-067DB ArduSat 1 ? >>> 39414 1998-067DC Ardu
[amsat-bb] Re: Object IDs
Hi Mike, Thanks for the confirmation of the 'tbc's. This picture shows the measured doppler curve of an overhead evening pass of OSCAR 73, plotted against the calculated curves for objects 39444 and 39445. These objects were about 11 s apart (i.e. about 82 km). https://thumb5.wuala.com/previewImage/SharedInfo/Space/AO73_20131216.jpg/?key=IZKufoz9U1Uo Note the temperature related frequency drift on the beacon transmitter, which causes frequency deviations when using automatic doppler correction. To be able to create useful doppler curves it would help if all Cubesats would transmit a *continuous* carrier signal on a *constant* frequency... ;-) Still a lot of IDs are unknown. Of all the objects from the Minotaur launch, only three are officially identified: 39380 2013-064A STPSat 3 39388 2013-064J SENSE SV1 39392 2013-064N SENSE SV2 It is suggested that Cape 2 is object 39382 (2013-064C) and that KySat 2 is object 39383 (2013-064D). These are to be confirmed. 73, Nico PA0DLO On 2013-12-17 22:13, Mike Rupprecht wrote: Thanks Nico, PA0DLO for pointing me in the rigth direction. I agree with you the TLE for the cubesats: 39436 2013-066W Eagle 2 ($50Sat) ok 39438 2013-066Y Velox PII ok 39439 2013-066Z First-MOVE ok 39440 2013-066AA CubeBug 2 ok 39444 2013-066AE AMSAT-OSCAR ok :-) 39445 2013-066AF HiNCube ? 39446 2013-066AG UWE 3 ok Just made a deep analysis with the FunCube TLE (Object AE vs. AF). The pass was not very high but every seconds I switched between the TLE AE and AF. You can see a slightly differnce (only a few Hz) at TCA what leads me to say - your're right. FUNCube-1 seems indeed to be Object AE. http://www.dk3wn.info/p/?p=39682 73 Mike DK3WN -Ursprüngliche Nachricht- Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im Auftrag von Nico Janssen Gesendet: Dienstag, 17. Dezember 2013 14:32 An: amsat-bb@amsat.org Betreff: [amsat-bb] Re: Object IDs All, Further doppler measurements show that TshepisoSat (aka ZACube 1) is object 39417 (2013-066B) and AMSAT-OSCAR 73 (aka FUNCube 1) is object 39444 (2013-066AE). Therefore HiNCube must be object 39445 (2013-066AF). It is not easy to get a good doppler curve with many Cubesats because of the limited transmissions and because of the frequency drift of their beacon transmitters. These object IDs from the Dnepr launch seem to be correct, although some still need to be confirmed (tbc): 39416 2013-066A Aprizesat 7 39417 2013-066B TshepisoSat 39418 2013-066C Skysat 1 39419 2013-066D Dubaisat 2 39421 2013-066F Unisat 5 39422 2013-066G STSat 3 39423 2013-066H WNISat 1 39425 2013-066K Aprizesat 8 39427 2013-066M Triton 1 39428 2013-066N Delfi-n3Xt 39429 2013-066P Dove 3 39430 2013-066Q GomX 1 39431 2013-066R BRITE-PL 39432 2013-066S HumSat D (tbc) 39436 2013-066W Eagle 2 ($50Sat) (tbc) 39438 2013-066Y Velox PII (tbc) 39439 2013-066Z First-MOVE (tbc) 39440 2013-066AA CubeBug 2 (tbc) 39444 2013-066AE AMSAT-OSCAR 73 39445 2013-066AF HiNCube 39446 2013-066AG UWE 3 (tbc) 73, Nico PA0DLO On 2013-12-01 16:25, Nico Janssen wrote: All, An update on the satellite IDs. Still no IDs are available for the satellites launched from the ISS (except TechEdSat 3P) and the Minotaur. Several IDs have been published for the objects from the Dnepr launch but many need to be confirmed. Still not all TLEs are released. AMSAT-OSCAR 73, ZACube 1 and HiNCube were launched from the same ISIPOD. As they initially were close together, the JSpOC decided to release only one TLE set for this cluster under object number 39417 (2013-066B). Now the distances between these satellites are slowly increasing. So the question is which satellite is object 39417. Detailed doppler measurements show that ZACube 1 is now about 25 s early compared to the TLE for object 39417, while OSCAR 73 is about 11 s early. This seems to indicate that object 39417 is actually HiNCube. Hopefully TLEs for OSCAR 73 and ZACube 1 will be published soon. 73, Nico PA0DLO On 2013-11-23 11:32, Nico Janssen wrote: All, An overview of the presently known IDs for the satellites that have been launched recently. ISS JSSOD Cubesat launches 2013-11-19 12:18 UTC 39412 1998-067DA Pico Dragon ? 39413 1998-067DB ArduSat 1 ? 39414 1998-067DC ArduSat X ? To be confirmed when the objects have more separation. 2013-11-20 07:58 UTC 39415 1998-067DD TechEdSat 3P Minotaur 1, Wallops Flight Facility 2013-11-20 01:15 UTC ORS3 & ELaNa 4: 29 satellites So far only 4 TLEs published. No IDs yet but probably: 39380 2013-064A STPSat 3 Dnepr, Yasny 2013-11-21 07:10:11 UTC 32 satellites 19 TLEs published 39417 2013-066B FUNcube 1 39427 2013-066M Triton 1 39428 2013-066N Delfi-n3Xt Note that all designations may change later on. 73, Nico PA0DLO ___ 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: ht
[amsat-bb] Re: satellite average elevation & new birds
> ... asking Bob to comment on his earlier thoughts on using antennae at fixed elevations? The geometry of LEO satellites has not changed. The optimum angle for a fixed tilt modest gain YAGI is about 15 degrees (assuming you have a decent horizon). See: http://aprs.org/LEO-tracking.html That said, if your antenna is seriously blocked from all directions below say 10 degrees, then you are not going to hear anything down there anyway. So bump it up to say 20 or 25. But 70% of all LEO passes are below 22 degrees so just recognize that you are giving up most of your operations. Bob, Wb4aPR -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Clayton Coleman Sent: Tuesday, December 17, 2013 8:35 PM To: Ted Cc: AMSAT-BB Subject: [amsat-bb] Re: satellite average elevation & new birds Just a short time ago after I moved into a new shack, I operated for a month with an Elk at 15 degrees on a tripod. Armstrong rotor. I worked all the current satellites right up through the first week we had AO-73's transponder available. Pay close attention to comments WB4APR has made about setting the fixed elevation based on the lowest horizon you can work. For example, if it takes ten degrees for you to clear a mountain, twenty five degrees is probably okay. If you have a clear horizon view, fifteen is probably okay. The goal is to have as much gain available at your lowest elevation to increase your available range. YMMV PS A preamp goes a long way in a fixed elevation setup. 73 Clayton W5PFG On Dec 17, 2013 7:24 PM, "Ted" wrote: > I'm kind of looking for an update from Bob, but can't find his email > right now... > > But the question is, in view of what appears to be some renewed > interest in working the new cube sats, et al, is asking Bob to comment > on his earlier thoughts on using antennae at fixed elevations. For me, > I'm using my Elk on a Rat Shack rotor at a fixed el per Bob's > recommendations. (I'm still struggling with PCSAT32...!!!%^&*!!) but, > this antenna set up is very cost effective and seems to perform pretty well. > > For example, Joel Black has asked for some advice in an earlier > posting. My concern is that new operators or those returning run out > and spend a bunch of $$$ on a new setup. No one knows how long the > current crop will last or if a new crop is in the future, so probably > some caution on the Visa is warranted. > > Just asking (and especially Bob) > > 73, Ted > K7TRK > > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] > On Behalf Of Bob Bruninga > Sent: Tuesday, April 12, 2011 8:23 AM > To: amsat-bb@AMSAT.Org > Subject: [amsat-bb] Re: satellite average elevation > > > we used a horizontally polarized yagi fixed at 30 degrees above the > > horizon. That worked very well.. > > Thanks for the confirmation. Yes, elevation rotation is simply not > needed at all for LEO spacecraft and modest beams. A mild, fixed tilt > modest beam is just perfect. > > But, the "30 degree" angle myth is very pervasive throughout amsat, > whereas, the optimum angle is more like 15 degrees. > > A 30 degree up-tilt gives up too much gain (-3 dB!) on the horizon > where signals are weakest and where satellites spend most of their > time, and puts the gain in an area of the sky where the satellite is > already 6 dB stronger and is rarely there (giving you max beam gain where you need it least). > > If you look at the sketches on the web page, the optimum angle is more > like > 15 degrees up-tilt. It preserves max gain on the horizon within 1 dB > (where it is needed most) and focuses the breadth of its gain on the > area of the sky where the satellites spend something like 95% of their > time. For the missing 5%, the satellite is right on top of you and > almost 10 dB stronger without any beam at all. Oh, and the 15 degree > up-tilt beam is also perfect for Terrestrial operations as well. > > See the sketch on: http://aprs.org/rotator1.html > > In some future life, if we ever get back to HEO's and huge OSCAR > arrays, then elevation rotors have a place. These high-gain beams > have such narrow gain patterns, that higher precision tracking is a > must. (Though it is complete overkill for LEO's). > > Using these OVERKILL arrays for LEO's adds significant complexity to > LEO operation requiring higher precision tracking, elevation rotors, > better timing, fresher element sets and automated operation. > > Using a TV rotator and 15 degree fixed tilt beam is much more forgiving... > > Bob, Wb4APR > > > ___ > 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 > > > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the a
