Open Source Satellite Initiative OSSI CubeSat Wiki

Hojun Song DS1SBO with Professor Hien Vo and the OSSI CubeSat

Hojun Song DS1SBO with Professor Hien Vo and the OSSI CubeSat

Professor Hien Vo of the Inter American University, Puerto Rico, visited Korea and met Hojun Song DS1SBO who has developed the Open Source Satellite Initiative OSSI-1 CubeSat.

OSSI-1 is planned to launch in the 2nd quarter of 2013 into a 575 km 63° inclination orbit on a Soyuz-2-1b rocket from the Baikonur launch facility in Kazakhstan along with the Bion-M1 satellite and the SOMP, BEESAT 2, BEESAT 3 and Dove-2 CubeSats. The Soyuz-2-1b launch had originally been planned for August 2012 but was delayed.

The development of the satellite has been documented on the Open Source Satellite Initiative Blog and the Wiki

Hojun Song DS1SBO has spent 7 years developing his Open Source Satellite Initiative satellite OSSI-1. It has a beacon in the 145 MHz band, a data communications transceiver in the 435 MHz band and carries a 44 watt LED optical beacon to flash Morse Code messages to observers on Earth.

The Korean national amateur radio society KARL described the OSSI-1 CubeSat in their report to the International Amateur Radio Union Region 3 Triennial conference that was held in Viet Nam in 2012. Read the report at

Read the New Scientist article at

In this 20 minute video Hojun Song DS1SBO and Donghee Park describe the Open Source Satellite Initiative amateur radio CubeSat OSSI-1.

Watch How OSSI-1 Satellite Works: General Overview

Watch the BBC TV report South Korean artist has high hopes for his homemade satellite

Open Source Satellite Initiative (OSSI)

Hojun Song DS1SBO gave a presentation on OSSI on Oct 26, 2012 at WIRED 2012 in London