satelites
VO-52 (HamSat) recovery succesful
A report received from the ISRO Satellite Centre at Bangalore,
India on March 14 says the HAMSAT VO-52 is back on the air. Mani,
VU2WMY wrote, “The commands to ‘Turn On’ the PE1RAH Dutch trans-
ponder was successfully sent during 14:00 UT 35 deg ascending node
pass over Bangalore, India. The commands were successfully received,
acknowledged and confirmed by telemetry. The beacon signal was heard
loud and strong here at Bangalore.”
Stations in Europe and North America reported good signals from VO-52
immediately after the transponder was activated. The beacon was heard
with two-way contacts completed through the transponder.
The HAMSAT team requests detailed initial reports be sent to::
tprangan@istrac.org and a copy to wmy@isac.gov.in
would be greatly appreciated.
HAMSAT VO-52 frequencies are:
Uplink: 435.2250 – 435.2750 MHz SSB/CW
Downlink: 145.9250 – 145.8750 MHz SSB/CW
Beacon: 145.8600 MHz CW
The CW beacon is sending: HI HI HI THIS IS VU SAT WITH THE DUTCH
MODE UV TRANSPONDER MADE BY WILLIAM LEIJENAAR 73 DE PE1RAH
Upon successful recovery of VO-52 Mani, VU2WMY sent the following
message on behalf of the HAMSAT team:
I take this opportunity to sincerely thank each and every
user and well wishers, who have been following and monitoring
closely all those events and activities that followed since
the interruption on 28th February 2012.
Thanks for all those encouraging and supporting expressions!
The initial telemetry reports indicated all the crucial and
critical parameters to be normal and satisfactory and we do
hope ‘HAMSAT VO-52′ would be available with much stronger power.
The overall spacecraft health is in ‘Excellent Condition’ and
all that we need to do is to monitor the transponder parameters.
14:05 UT on 14 March was a moment of great satisfaction and joy
to all of us here in bringing ‘HAMSAT VO-52′back to life. It also
gives us great pleasure to note that ‘HAMSAT VO-52′from India/ISRO
has a earned a name in the history of ‘Amateur Radio Satellites’.
On behalf of everyone, I take this opportunity to sincerely thank
particularly, Mr. Parimalarangan-Operations Director for his hard
work and great efforts besides his exemplary technical competence
and skills exhibited in recovering back ‘HAMSAT VO-52′.
Also my sincere thanks to Mission Director Mr. R. Suresh and the
entire ‘HAMSAT VO-52′ Mission Management and Project teams for all
the support, encouragement and recognition provided to ‘Amateur
Radio World’.
My Good wishes to VO-52 and the transponders on-board for a ‘Healthy
and Long Life’. My Good wishes & greetings, once again to William,
PE1RAH.
Dutch transponder on VO-52 will not be switched on
Dear Friends,
Thanks for the encouraging and supportive expressions!
Unfortunately, we are sorry to inform that the ‘Expert Committee’ overseeing the VO-52 (HAMSAT) performance has advised to extend the ‘Observation Period’ by another week.
Hence, the decision to switch on the transponder # 2 is now put ‘ON HOLD’ till further notice. In-convenience caused to the users is regretted.
This latest decision is just only a postponement and nothing to worry about the health of the spacecraft. We re-assure you all that VO-52 is very strong and in a ‘Perfect Health’ condition.
We do hope that the technically competent user community would understand the situations involved with any Space related activities.
VO-52 to be switch on in Dutch transponder mode
Dear VO-52 (HAMSAT) users,
On behalf of HAMSAT VO-52 Mission Director, Operations Director and
the entire HAMSAT Team, I take pleasure to inform the user community
that;
After the ‘In-Orbit Maintenance Operations’ the decision to turn ‘ON’
the payload transponder was taken and accordingly;
The Transponder No 2 i.e. The Dutch Transponder made by William
Leijenaar PE1RAH would be switched ‘ON’ at 13:51 UT on 08.03.2012
during orbit # 37006 over India.
A ‘Critical Comparative Signal Report’ between the Indian and Dutch transponder would be of great help for further evaluations and necessary actions for the maintenance the transponder in good and healthy condition for better services and also, the inputs would be very valuable to the respective transponder designers.
We all hope, Williams PE1RAH would be very happy with our decision and
behalf of every one here in India involved with project, wish Williams
and his transponder all the very best and good luck.
Thanks to AMSAT-India (Nitin VU3TYG) for the all the help and co-ordination provided.
Compass-1 End of mission
Dear supporters and friends of our COMPASS-1 mission,
first, let me thank you very much for your support in trying to save the life of our COMPASS-1 satellite during the last days, but also during the last years of “routine” operations. It seems that our mission now comes to an end. The projected lifetime of COMPASS-1 was half a year. The tiny guy has outperformed this value by a factor of more than seven. April 28th would have been it’s 4th birthday and if it was a human, it would now be about 500 years old (Cubesat-years are short). So, if you have more important things to do (and I guess so), we can not expect you to continue your efforts in saving its live. With your support, you have made things possible that we would never have been able to achieve with our own resources and I appreciate your support very much. So, COMPASS-1, rest in peace. (Nevertheless, if you still want to try to awake it from the dead, feel free to do so.)
I hope that we will soon be able to build and launch COMPASS-2 and that you will be still available, all over the world, as a ground station to command and fly our new bird. We will keep you informed.
Cheers and thanks for all,
Bernd
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Prof. Dr. Bernd Dachwald
Faculty of Aerospace Engineering FH Aachen
University of Applied Sciences
VO-52 Transponder Unavaliable
Dear HAMSAT VO-52 users,
With regrets, we confirm the non-availability of the transponder on HAMSAT VO-52 since 28th February 2012. This is the first ever interruption in the services of HAMSAT since 5th May 2005.
The timely feed backs from John K8YSE, Domenico I8CVS, Eugenio IZ8JHD, Jan PE0SAT and Nitin VU3TYG were highly appreciated and acknowledged by the ISRO’s HAMSAT Mission Management Board.
I,m herewith enclosing the mail received from Mr. T.Parimalarangan, Operations Director-HAMSAT VO-52 regarding the ‘Temporary Non-availability’ of VO-52 transponder and beacon.
Message starts here:
Mr. Subramani VU2WMY:
Thanks for obtaining the user feedback. You may please post the following message in the Users website. If possible, try to find out who has last operated HAMSAT payload transponder on 28th and at what time
“HAMSAT Transponder services not available temporarily due to operational reasons. Inconvenience regretted”
MASAT-1 Designated MagyarSat-OSCAR-72 (MO-72)
OSCAR Number Administrator Bill Tynan, W3XO reports, “Congratula-
tions on the successful launch of the MaSat-1 Cubesat that the team
at Budapest University of Technology and Economics have been respon-
sible for designing, building and testing. Since you have met all of the requirements for being issued an OSCAR number, including coordination through IARU and requesting an OSCAR number, I, under authority vested in me by the President of AMSAT-NA, do hereby name MaSat-1 as MagyarSat-OSCAR-72 or MO-72.”
Bill concludes, “I, and all at AMSAT-NA wish MagyarSat-OSCAR-72 great success in fulfilling all of its mission objectives.”
VEGA status report from Mike, DK3WN
Mike has reported decoding and receiving the following cubesats:-
ALMASat-1 received and decoded
e-St@r not received
Goliath not received
MaSat-1 received and decoded
PW-Sat received and decoded
Robusta not received
UniCubeSat not received
Xatcobeo received and decoded
Early VEGA TLE’s Posted
MaSAT-1 heard
A report from the US has confirmed contact with MaSAT-1. More soon!
VEGA launch successful!
ALMASat 1 and the 7 cubesats deployed from the upper stage. Awaiting confirmation on reception soon!
Prem-TLE for upcoming VEGA launch
Vega is scheduled to launch on February 13, at 1000 UTC with eight student built amateur radio satellites. Internet video streaming of the launch will be available at: http://www.videocorner.tv/index.htm
The launcher will first deploy the main payload LARES, the Laser relativity Spacecraft and will then make an additional firing of the final OVUM stage before deploying the secondary cubesat payloads. The planned timing for these deployments, in order of ejection, are as follows:
= T0+ 4245.30secs 1st PPOD, with XatCobeo, e-st@r, and Goliat.
= T0+ 4255.30secs 2nd PPOD, with Robusta, MaSat-1 and PW-Sat.
= T0+ 4265.30secs 3rd PPOD, with UniCubeSat.
= T0+ 4275.30secs AlmaSat-1.
AMSAT Fox-1 Cubesat Selected for NASA ELaNa Launch Collaboration
AMSAT NEWS SERVICE
ANS-041 Special Bulletin
SB SAT @ AMSAT $ANS-041.01
ANS-041 AMSAT Fox-1 Cubesat Selected for NASA ELaNa Launch Collaboration
AMSAT News Service Bulletin 041.01
From AMSAT HQ SILVER SPRING, MD.
February 10, 2012
To All RADIO AMATEURS
BID: $ANS-041.01
Project ELaNa, NASA’s “Educational Launch of NanoSat” managed by the
Launch Services Program at the Kennedy Space Center, announced on
February 10 that the AMSAT Fox-1 cubesat has been selected to join
the program.
NASA will work with AMSAT in a collaborative agreement where NASA
will cover the integration and launch costs of satellites deemed to
have merit in support of their strategic and educational goals.
Watch for full details to be published in the AMSAT Journal.
AMSAT teamed with the ARRL to write and deliver the 159 page educa-
tional proposal to NASA. Letters documenting the importance of AMSAT’s satellites in the education programs at the ARRL and also at the Clay Center for Science and Technology at the Dexter and Southfield schools in Brookline, MA, were important parts of our proposal.
AMSAT President Barry Baines, WD4ASW said, “The ELaNA Launch opportunity marks AMSAT’s return to space after the conclusion of the successful ARISSat-1/KEDR flight. We need to get the flight Fox-1, along with an operational flight backup satellite, built, integrated, tested, and delivered. Our ability to provide a spacecraft and
get it launched is dependent upon the active support of our donors who wish to see Fox-1 fly.”
AMSAT Vice-President of Engineering, Tony Monteiro, AA2TX noted this
will provide a launch opportunity for AMSAT’s next generation of FM repeater satellites with features and operation beyond the experience of AO-51. AMSAT’s Fox-1 Engineering Team is making progress developing
the advanced satellite that will provide these features:
+ Fox-1 is designed to operate in sunlight without batteries once the battery system fails. This applies lessons learned from AO-51and ARISSat-1 operations.
+ In case of IHU failure Fox-1 will continue to operate its FM repeater in a basic, ‘zombie sat’ mode, so that the repeater remains on-the-air.
+ Fox-1 is designed as the immediate replacement for AO-51. Its U/V (Mode B) transponder will make it even easier to work with modest equipment.
+ From the ground user’s perspective, the same FM amateur radio equipment used for AO-51 may be used for Fox-1.
+ Extending the design, Fox-2 will benefit from the development work of Fox-1 by adding more sophisticated power management and Software Defined Transponder (SDX) communications systems.
The Fox-1 Project presents an opportunity to literally put your call-
sign on the Fox hardware. AMSAT is looking for major donations to help
underwrite the cost of solar cells/panels, one of the more significant
expenses of the project.
These solar cells are needed for the flight unit as well as for the a
flight spare. As Fox-1 will have solar cells on all six sides of the
spacecraft and given the relatively small surface area available on
each side (at most 4″ by 4″ per side), AMSAT needs to invest in high
efficiency solar cells to gain as much power as possible to operate
the spacecraft.
Several opportunities to make your donation to keep amateur radio in
space include:
+ Return the form sent with the letter to reply with your donation
for the Fox-1 Project.
– All donations over $40 will receive a Fox pin.
– Donations of $120 or more qualify you for AMSAT President’s Club
+ Call Martha at the AMSAT Office +1-888-FB AMSAT (1-888-322-6728)
+ Paypal donation widget on the main page at: http://www.amsat.org
+ Paypal donation widget for Project Fox at:
http://www.amsat.org/amsat-new/fox/
+ You can also go to the Paypal site and send your donation to
martha@amsat.org.
+ The AMSAT Store: http://www.amsat-na.com/store/categories.php
Project Fox web site provide a good overview of the technical progress
of the new satellite: http://www.amsat.org/amsat-new/fox/
[ANS thanks AMSAT President Barry Baines, WD4ASW, AMSAT Vice-President
of Engineering, Tony Monteiro, AA2TX and AMSAT's Project Fox Engineering
team for the above information]
Comentarios recientes
hace 1 año 5 semanas