Table 2. System specifications of the KMSL cubesat

Contents	Specification
Life time	6 month
Payload	Combustion experiment moduleBiological experiment module
Volume	100 × 100 × 340.5 mm
Mass	3.595 kg
Altitude / orbit	550 km / Sun Synchronous
Altitude control	< 2° (omnidirection)
Interface	USB, UART, I2C, Serial
Communication system	Uplink: VHF (145.835 MHz, 9.6 kbps)Downlink: UHF (437.265 MHz, 9.6 kbps)

KMSL, Korea Microgravity Science Laboratory; UART, universal asynchronous receiver/transmitter; VHF, very high frequency; UHF, ultra high frequency.