FO-29 Enters Full Sunlight: Veteran Satellite Sees Renewed Activity in 2026
/Fuji-OSCAR 29 (FO-29), also known as JAS-2, the Japanese amateur radio satellite launched in August 1996, has entered a new operational phase as of early March 2026. Now approaching its 30th anniversary in orbit, the satellite—long limited by failed batteries—relies entirely on solar panel illumination for power, meaning it only functions during sunlight periods and shuts down in eclipse.
In February 2026, the FO-29 control team (operated from Japan) continued scheduled activations of the linear transponder, with commands sent on specific dates to turn it on for limited windows. Operators noted the unstable situation due to the satellite’s age, with activations sometimes failing if the onboard voltage didn’t respond quickly enough. The transponder operates in Mode V/u (inverting SSB/CW): uplink LSB 145.900–146.000 MHz, downlink USB 435.800–435.900 MHz, with a CW beacon on 435.795 MHz.
Read More



