ADALM-PLUTO
GNU Radio
PulseView
RTL_433

Old tech remote door openers which use PWM and static key codes can still be found from 868 MHz ISM band.

gnu-plutosrc.jpg

gnu-timedomain.jpg

rtl-433.jpg

pulseviewwav.jpg

Signal replay settings in SmartRF Studio. For more proper timing control for tx one can export register values for use in e.g. Arduino + CC120

smartrfspic.jpg
https://i.ibb.co/9nPnLj7/smartrfspic.png

grview.jpg
https://i.ibb.co/rctLWbs/grview.png

firfilter.jpg