Mission goals and purposes
FEES Mission had three main goals. First of all, we aimed to obtain an in-orbit qualification of both an attitude determination architecture and a commercial GPS receiver. FEES also validated the exploitation of IRIDIUM global network to receive data, testing and supporting on-board traditional radio transmissions, which allowed us to manage the mission without a direct link to ground station and receiving early notifications. Finally, we meant to test a low cost UHF receivers with advanced modulation protocols.
Moreover, the launch provided useful insight for the validation of system control architecture, for the qualification of a new generation of solar cells and for different transmissions protocols testing.
Are you a Radio Amateur? Follow us!
FEES is also a Radio Amateur mission! Find below all the information you need to listen to our beacon:
The default radio mode is LoRa. The satellite transmits 1 LoRa signal and 10 FSK signals with a cycle of 60 seconds (LoRa, wait 60 secs, FSK wait 60 secs.).
- Frequency: 437200000 (437.2 MHz)
- Modulation band width: 0
- Spreading factor (data rate): 9
- Error correction code rate: 1
- Preamble length: 5
- Symbol timeout: 5
- Symbol hop: 4
- Frequency deviation: 2500
- Data rate: 9600
- Modulation band width: 50000
- Expected preamble length: 3
Beacon decoding is available at this link
Are you not a Radio Amateur or you still do not have an equipment? See our beacons on TinyGS
and build your own ground station!
Our validation, your warranty
FEES was the first step in our technology validation. It enabled us to certify our systems, and it enabled our customer to trust solutions they can certainly rely on.