The Argentinian earth observation satellite ÑuSat-1 carries a linear transponder built by AMSAT Argentina. The satellite was launched on a CZ-4B rocket from Taiyuan Satellite Launch Center in China on May 30, 2016 into a 500 km sun-synchronous orbit with an inclination of 97.5 degrees and a Local Time of the Descending Node (LTDN) of 10:30.
The AMSAT Argentina U/v inverting transponder, named LUSEX, has an uplink of 435.935 MHz to 435.965 MHz and a downlink of 145.935 MHz to 145.965 MHz. Total power output is 250 mW. There is also a CW beacon at 145.900 MHz with a power output of 70 mW.
The transponder and beacon are currently active over Latin America and Europe.
For more information, see the AMSAT Argentina LUSEX page at http://lusex.org.ar/