Hi,
The scripts in src/demod/python/ don't work with GNUradio 3.7.
Mike Jameson wrote a patch for UHD and I completed with a patch for
osmo-sdr receivers :
https://github.com/m0mik/osmo-tetra/commit/5429a1e3abf3e5c1aeadc0253169233faee46cc8.patch
https://github.com/Tim---/osmo-tetra/commit/374e651264dc2cbe02366b9affc2f5e1994e2289.patch
Unfortunately I don't have the hardware to test the other scripts
but the modifications should be similar.
Regards.
Timothée.