Set-up end-to-end is complex (here in Parrot Security OS and generic hackRF HW)
Recon and Pentest of the growing number of connected devices many with weak security (Car, house radio-keys, RF tags etc.).
Basic home or biz pentest: List critical devices and frequency ranges, activate/trigger device and record for post-processing. Security may be OK or weak with possibility to re-transmit recorded/cloned radio sequence.
Gnuradio Install on Linux, here Parrot Security OS (Debian)
$sudo apt update
$sudo apt -y install gnuradio
Run companion (GUI) for workflow definition
Tutorial Michael Ossmann https://greatscottgadgets.com/sdr/1/
Example FM radio