LightSail 2 -- Solar Sailing Cubesat with a Beacon on the 70cm Band

Once deployed, LightSail 2 will automatically transmit a beacon packet every few seconds, which can be decoded into 238 lines of text telemetry describing the spacecraft's health and status, including everything from battery status to solar sail deployment motor state. Every 45 seconds, the spacecraft will transmit "LS2" on the spacecraft's frequency of 437.025 MHz, within the Amateur Radio 70-centimeter band.

Further details can be found online at,
http://www.planetary.org/explore/projects/lightsail-solar-sailing/