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ARISSat-1 Project

ARISSat-1 is deployed  3 Aug 2011

The ARISSat-1 amateur radio experiment is on board the International Space Station. ARISSat-1 is awaiting to be manually deployed on 3 August 2011 during EVA 29. Just before deployment the control panel switches will be thrown; transmissions will start 15 minutes later.  NASA television will broadcast this EVA and satellite release.

ARISSat-1/Kedr will undergo a transmission test from inside the ISS during 30-31 July. Reception reports have come in from South Africa, Japan, Hawaii and Russia during the first eight hours of the test.

pdf of the ARISSat Fact Sheet

pdf of the Data Transmission Timings

ARISSat-1 presentation at Dayton 2011 (pdf)

In addition to the flight unit, there is a flight ready backup unit in Russia (to be returned to the US this summer). AMSAT also has a working prototype unit for demonstrations and development, as well as two additional flight units in the US ready for future opportunities.

  ARISSat-1/KEDR aboard the ISS (image source - Roscosmos)

ARISSat-1 was designed, developed and tested by AMSAT-NA and ARISS volunteers. The primary mission for the satellite is STEM (Science, Technology, Engineering, Mathematics) education around the world. We expect students to be able to easily receive the 2m FM transmissions and use the information in classroom exercises. There are 24 greeting in 15 languages, most with a Secret Word at the end. Students or classes can email their Secret Word reception and receive a certificate. Certificates will also be issued for SSTV image reception, voice telemetry reception, CW reception, full SSB telemetry packet reception and Kursk experiment reception. The satellite has four cameras on board that will constantly be taking pictures and sending them to earth using SSTV Robot-36 format in the 2m FM transmission.

The official Web site for the ARISSat-1 project is arissat1.org .

Free software will be available for the PC and Mac that will take audio from a 2m SSB receiver connected to a computer sound card and demodulator/display the BPSK-1000 signal. The ARISSatTLM software can be downloaded here.

Students and interested observers will be able to get the experiment data and plot it as well as watch the temperature and battery voltage changes as the satellite gets closer to the earth.

Amateur Radio operators will have a 16 kHz wide 70cm/2m (U/V) SSB/CW transponder to operate through. The 40 kHz wide signal containing FM, CW, BPSK and transponder will all be transmitted simultaneously using new SDX (Software Defined Transponder) technology.

Visit the ARISSat-1/KEDR How To page for pointers from the developers about soundcard connection, BPSK reception, SSTV reception.

(Thank you to Christophe Mercier, ARISS-Europe for the French translation of the ARISSat-1/KEDR description, ARISSatTLM Software Guide, Color Frequency Guide.)

Ready for crating and shipping to Russia

Design Review February 2010

We held an ARISSat Design Review on Feb 15-16, 2010 in Orlando.  There were 23 presentations given on all phases of the ARISSat development.  These can be viewed here  Design Review Presentations .

We hadthe operational prototype unit running and on display in the AMSAT booth at the 2010 and 2011 Dayton Hamvention.

Most of the final system components are complete and have been working for months. Multiple structures have been assembled and once the modules have been tested in the Thermal/Vacuum chamber they will become part of the final assembly.

Major items to compete by 30 September 2010 are:

  • Re-building the Thermal/Vacuum Chamber - complete
  • Testing the modules in the Thermal/Vacuum Chamber - complete
  • Scheduling Vibration testing - complete
  • Performing Vibration testing - complete
  • Completing the test plans - complete
  • Assembling the 2 units we ship to Russia - compete
  • Testing the system operation - complete
  • Passing the 3 Phase NASA Safety Review - complete
  • IHU software for power management and telemetry gathering  - complete
  • Experiment and Telemetry Ground station software  - operational
  • Ship the two "amateur Radio Experiments to Russia via Houston - complete
  • Russian integration of the Kursk Experiment - complete

Gould Smith, WA4SXM
AMSAT Project Manager for ARISSat

 

Updated: 03 Aug, 11


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