Fox-1 Engineering Unit in Pictures

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 Various photos of RF and general testing going on.

Taking a close look
Taking a close look
On the RF test bench with WB5IDM
On the RF test bench with WB5IDM
Fixin' to run some audio tests
Fixin’ to run some audio tests
Checking the deviation of the high speed telemetry
Checking the deviation of the high speed telemetry
Slow speed telemetry
Slow speed telemetry
Partial stack showing PSU board bottom
Partial stack showing PSU board bottom
IHU board
IHU board
A lot of components and shielding packed into the 8 mm board to board space!
A lot of components and shielding packed into the 8 mm board to board space!
Quick check of the PSU under "solar power"
Quick check of the PSU under “solar power”
The tester needs power, too!
The tester needs power, too!

Fox-1A Engineering Unit Testing Videos

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A couple of short videos showing some of the Fox-1A Engineering Unit testing are now on YouTube.  Each video is a time-lapse condensation of a segment of testing, to give you a look at some of what is going on.  More videos will be added as Fox-1A moves forward.

A 2 1/2 minute video showing about 25 minutes of testing.

A 3 minute video showing about 30 minutes of testing.

Fox-1 Engineering Unit Back on Test Bench

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After a couple of weeks of tweaks and upgrades, the Fox-1 Engineering Unit is back on the test bench in AMSAT VP Engineering NØJY’s shack on July 22, 2014.

A full suite of tests are being performed including on the air use of the transponder. Fox-1 Team members participate in the testing via GoToMeeting and a PTZ IP camera in the NØJY shack, from their homes throughout the U.S.A.

You can read more about the Fox-1 testing process in the July/August 2014 edition of the AMSAT Journal.

Fox-1 Engineering Unit
Fox-1 Engineering Unit
Fox-1 in the Sun
Fox-1 prepares to catch some rays. Just pull the RBF pin!
Fox-1 EU transponder on the air
Fox-1 EU transponder on the air connected to N0JY’s attic antennas. Local hams in Granbury and Hood County TX help with QSOs and signal reports.

VO-52 “Hamsat” end of mission

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From an email to AMSAT-bb email list today:

Dear Friends,

With heavy heart, I sadly convey, that our little angel ‘HAMSAT VO-52’ would no more be able to offer her services to the ‘Amateur Radio Fraternity. HAMSAT VO-52 succumbed in Space on 11th July 2014, while she was on her 49,675th orbit, due to the failure of on-board lithium ion batteries that have met their end of life.

Although her desires were to be at work with other systems and sub-systems working normal as per the latest telemetry received, the on-board computer recurring to ‘Reset’ mode due to the failure of batteries is preventing her to do so.  Hence, it is decided not to expect any more meaningful and reliable services from HAMSAT VO-52.

Since 11th July, every best possible effort has been put in by the spacecraft controllers here in ISTRAC Bangalore to revive her back to life and to help her with work load, so she won’t be swamped when she returns, but with no luck.  Though it is hard, the HAMSAT VO-52 designers and controllers insist that the time has come to let the little angel free in space to go drifting on her own from their care and custody.

Thus, today 21st July 2014, ISRO have decommissioned ‘HAMSAT-VO52’

We all here in ISRO do definitely hope that ‘HAMSAT VO-52’ worked tirelessly and was a good friend to the ‘Amateur Radio Fraternity’

around the World. We are sure that HAMSAT was loved by all who worked through her. Though, we are deeply saddened by the loss of HAMSAT VO-52, but she will never be forgotten and far from our hearts, minds and memories.

HAMSAT VO-52 will always be remembered by all of us here in ISRO as one of the greatest satellites of ours.

Dear ‘HAMSAT’, looking at the sky, we all say ‘Good Bye’ to you.

You’ll be greatly missed. Rest in Peace.

Nevertheless, at this point of time, on behalf of the World Amateur Radio Fraternity, we thank each and everyone who contributed to the great success of ‘HAMSAT’.

Particularly, our sincere thanks to the Chairman ISRO, Dr. K.

Radhakrishnan, past chairmen Dr. Kasthurirangan, Dr. G. Madhavan Nair, Director-ISAC Dr. S.K.Shiva Kumar, past ISAC Directors Dr. P.S. Goel, Dr.

Shankara, Dr. T.K. Alex, Director-ISTRAC Shri. B.S. Chandrasekhar, scientific secretary Dr. Koteshwar Rao, Project Director-Shri. J.P. Gupta, Deputy project Directors, Mission Director-Shri. R.Suresh, Operations Director-Shri. Parimalarangan and each and every person directly or in-directly contributed.

At this point of time, we also thank AMSAT-India and in particular, late Shri. Nagesh Upadhyaya-VU2NUD,  Shri. B.S. Gajendra Kumar-VU2BGS, Shri.

Prathap Kumar-VU2POP, Air Commodore. Subramanian-VU2UV, Shri.  V.P.

Sandlas-VU2VP, Dr.R. Ramesh-VU2RMS, Shri. Nitin-VU3TYG, Mr. Williams Leijenaar PE1RAH and each and every member.

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Pasted below is the message from Mr. R. Suresh, Mission Director:

HAMSAT, the first small satellite by ISRO has been Decommissioned after nearly a decade of service to the World Ham community.

A true masterpiece among small satellites, designed for one year mission life, but exceeded all expectations by serving for almost 10 years. A truly autonomous satellite, with “Zero maintenance“ in terms of Mission operations, it provided a springboard to test many new concepts such as BMU. LI-ion based power system, automatic Spin rate control and Auto SAOC for maintaining the Satellite attitude without any ground commanding.

HAMSAT known as “OSCAR-52” among the Amateur HAM operators has been very popular because of its high sensitivity receiver and strong transmitter. Indian Radio Amateurs on many occasions conveyed to us that they have been greatly honored to share the adulations showered on ISRO and INDIA by the International Radio Amateur for gifting this wonderful satellite “HAMSAT”.

I take this opportunity to applaud the HAMSAT teams at ISAC, ISTRAC and other centre for their efforts and  support, which has made ISRO proud among the HAM users across the globe.

R,SURESH

MISSION DIRECTOR

HAMSAT

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Mani [VU2WMY/KJ6LRS]

Secretary & Station-In-Charge

Upagrah Amateur Radio Club VU2URC

ISRO Satellite Centre

HAL Airport Road, Bangalore-560 017.

VO-52 "Hamsat"
VO-52 “Hamsat”