Triton-1 recovered with help of PI9CAM 25 meter dish

Triton-1 in orbit - Credit ISIS

Triton-1 in orbit – Credit ISIS

A report on the PI9CAM website forwarded by PE0SAT describes how Triton-1 was recovered with the help of the 25 meter dish from PI9CAM.

Triton-1 was launched on a Dnepr on November 21, it has a 435/145 MHz FM to DSB transponder which is expected to be available for amateur radio use about 3 months after launch. The PI9CAM report says:

On November 29 we had an exciting day at PI9CAM.

We were asked to rescue a satellite!

PI9CAM 25 meter dish antenna

PI9CAM 25 meter dish antenna

On November 21, 14 satellites were launched. One of them is TRITON-1, built by the Dutch ISIS group.

First all was OK, but when a transmitter was switched on to keep the temperature on board high enough something went wrong. Harmonic noise of that transmitter desensed the receiver in such a way that the command station could not get any commands into the satellite….

It’s rather normal that satellite software resets every now and then. But it appeared this satellite software was very stable. Not one reset took place……

To try to regain command over the satellite PI9CAM was asked to help. The link budget predicted we might just be able to ‘cut through’ the noise with our 25 m dish and 400W on 70 cm.

Triton-1 and Deployer Pod - Credit ISIS

Triton-1 and Deployer Pod – Credit ISIS

So people from ISIS and CAMRAS met in Dwingeloo at PI9CAM in the early morning of November 29.
Mr. Murphy decided to join us that day….
First we found out that we connected the wrong cable up in the focusbox when we last worked on the frontend.
So we had no power on 70 cm….
It was raining and there was strong wind but the only way to get this right was to go up to the focusbox at 15 m high with the elevator….
We worked as fast as we could to prevent much water going into the focusbox.
I have never been so wet…..
But we managed!

Due to this we missed the first good pass of the satellite….

Triton-1 loaded into Deployer Pod - Credit ISIS

Triton-1 loaded into Deployer Pod – Credit ISIS

During the second pass the wind was really strong and probably because of that something went wrong when the dish started tracking the satellite at AOS. It more or less was blown into maximum safety position. This can only be reset by doing manual elevation. So we lost the second pass and two people got very wet by elevating the dish manually. But again we managed….

The third pass was only available at 21.00 so we had a lot of time to test tracking and to play with the freshly installed satellite tracking software. Even a few bugs were found and removed going through the software.

At 21.00 we were ready for it and everybody was very tense….
As soon as the satellite was above our TX limit of 10 degrees elevation we started transmitting. After 10 seconds we received good news from the ISIS ground station. We successfully switched off the transmitter of the satellite and the groundstation had control over the satellite again!

Everybody was very happy! We even had some champagne to celebrate this successful collaboration!

And we were all very proud of ‘our’ 57 year old and restored dish. Old, but still going strong!

73!
Team PI9CAM
(PE4WJ (ISIS), PA3CEG, PE1NUT, PE2HRM, PE0SHF, PE1CHQ, PA3DSS and PA3FXB)
—-

Thanks to PE0SAT for passing on this information.

The story has featured on Dutch TV. Watch the news report at
http://www.rtvdrenthe.nl/nieuws/vrijwilligers-verhelpen-storing-satelliet

ISIS Triton-1 amateur radio operator page http://www.isispace.nl/HAM/

PI9CAM http://www.camras.nl/

ISIS – Innovative Solutions In Space http://www.isispace.nl/

Triton-1 Update November 24

Triton-1 in orbit

Triton-1 in orbit

Triton-1 is a 3U CubeSat from ISIS-BV (Innovative Solutions In Space BV) that carries a 435/145 FM to DSB transponder which is expected to be available for amateur radio use 3 months after launch.

This update was issued at 22:23 on November 24, 2013.

Hi all,

We have put an AX.25 mode beacon content decoding document on the Triton-1 amateur radio information page. This document contains the conversions from raw nominal mode beacon telemetry to engineering values.

See http://www.isispace.nl/HAM/

Best regards on behalf of the team,

Wouter Jan Ubbels PE4WJ

Triton missions http://www.isispace.nl/cms/index.php/projects/triton-missions

Dnepr Yasny launch https://amsat-uk.org/satellites/dnepr-november-2013/

Triton-1 Update November 23

Triton-1 in orbit

Triton-1 in orbit

Triton-1 is a 3U cubesat from ISIS-BV (Innovative Solutions In Space BV) with a AIS (ship location service) radio science experiment which was launched on November 21. After the experiment is complete (est. 3 months), the spacecraft radios will be reconfigured to U/V FM to DSB (“AO-16 mode”) repeaters open for amateur use.

This update was issued at 08:48 on November 23, 2013.

Hi all,

New TLE’s for the DNEPR launch have been issued, we believe that
Triton-1 is object M.

2013-066M
1 39427U 13066M  13326.98436826 -.00002391  00000-0 -39688-3 0 10
2 39427  97.7901  39.5474 0120424 185.3601 174.6374 14.64539763 201

Meanwhile, Triton-1 is still in nominal mode, transmitting AX.25 BPSK on
145.822 MHz. Reception reports, especially in case the satellite is in
safe mode (transmitting the safe mode CW beacon) are welcome!

73 on behalf of the team,

Wouter Jan Ubbels PE4WJ

Triton missions http://www.isispace.nl/cms/index.php/projects/triton-missions

Dnepr Yasny launch https://amsat-uk.org/satellites/dnepr-november-2013/

Triton-1 Update

Triton-1 CubeSat Pic1As you may be aware, on November 21 at 07:10 UT a Dnepr launch vehicle will lift off from Yasny Launch Base, Russia, carrying a number of payloads.

One of them is the Triton-1 satellite, a 3-unit cubesat developed by ISIS – Innovative Solutions In Space from Delft, The Netherlands. Note that the Triton-2 satellite is not on this launch, its launch date  is to be determined at this stage. Triton-2 will be similar to Triton-1,  the main difference being that it will also carry an S-band downlink and associated mode US transponder.

Triton-1 CubeSat Pic2Triton-1 is a satellite which will serve as a test bed for an experimental receiver, designed to receive Automatic Identification System (AIS) messages from ships. During the first three months after launch, the plan is to characterize the AIS receiver in orbit. After approximately three months of experimenting, we intend to activate a single channel FM to DSB mode UV transponder (similar to AO-16’s transponder). The exact transponder uplink frequency in the 435-438 MHz band will be announced at that time as well.

Triton-1 CubeSat Pic3We have created an amateur radio information page which contains all information related to its downlink signals at:

http://www.isispace.nl/HAM/

We intend to publish regular status updates on the AMSAT-BB as well as on the aforementioned page.

Kind regards on behalf of the Triton-1 team,

Wouter Jan Ubbels PE4WJ