Daniel,
Some tools and an example here including modified HADES-R decoder.
Step 1 - Collect IQ (example IQ in folder; 50K sps) using your desired grc.
Step 2- Run through grc in folder to obtain frame. Will have to adjust BFO to obtain frame. HydraT.grc. (Use Hades-R satyaml file found in in updated gr-satellites)
Step 3 - change resulting frame to all UPPER CASE
3A 14 35 15 00 14 35 15 00 01 00 FF 0A 00 05 10 00 01 00 00 FF FF FF FF FF FF 00
Step 4 - run txt file containing frame through decoder (see example photo)