Satellite Status NORAD Uplink Downlink Beacon Mode Callsign Reports Info IARU freq coord Telemetry Decoder
UBAKUSAT ACTIVE 43467 145.940-145.990 435.200-435.250 437.225
9k6 FSK AX.25 YM1RAS latest report details YES

UBAKUSAT is a three unit CubeSat built by Istanbul Technical University (ITU). The VHF/UHF transponder and all other subsystems, except the stabilization, are doubled for redundancy. Where possible, both COTS systems and in-house development are employed. The power is provided using solar panels and lithium polymer batteries together with super capacitors. Satellite stabilization is accomplished using passive magnetic attitude control system with hysteresis rods. There is a camera payload to take images of the Earth.

UBAKUSAT switches between normal and safe modes depending on the battery level. Depending on the mode of operation, the operating range of the transponder changes. In normal operation mode, the transponder is operating for 10 minutes and 10 minutes off. In short, it works 10 minutes every 20 minutes. The safe mode working interval is 5 minutes every 20 minutes.


The UBAKUSAT telemetry is transmitted at 437.325 MHz, modulated with GMSK at 9600 bps data rate (AX.25).
According to the mode of operation will vary according to the mode of operation. It broadcasts once every 20 seconds in normal operation mode, and once every 60 seconds in safe mode.

You can send all telemetry information to these email addresses : usttl@itu.edu.tr info@tamsat.org.tr

UbakuSat RF spectrum 9k6 FSK AX.25

UbakuSat audio

High-Speed soundmodem by UZ7HO – Ver 0.18b