You can read the general description of the LOAC here.
LOAC Version coupled to a M10 Radiosonde allowing data transmission in real time to the receiver.
This solution is light, less than 1 kilo.
Modular Instrument that can be used under several type of balloons for atmosphere and stratosphere soundings
Low electric consumption: 3W.
2016: More than 100 flight performed under balloon
Charmex Campaign in 2013.
Voltaire project: LPC2E/ CNES perform stratospheric soundings twice a month, 24 flights per year.