The call for the participation to the two competitions is open to the amateur radio operators of the world.

The participants to the APRS mission payload competition are down-selected to five based on various criteria, such as technical soundness, mission concept, contribution to promotion of amateur radio communication awareness, etc.. Once the satellite is in orbit, how many data packet each payload can receive is compared.

Anybody can join the APRS ground terminal competition as long as they have a proper radio license. How many data packet can be received at the satellite by the Kyutech-designed APRS payload, called the reference APRS payload, is compared.

For both the competitions, the reception of data will be confirmed either by APRS digipeater or Store-and-Forward.