can I provide an FM audio feed through my LG G5's stereo jack and record?

my phone doesn't have it's FM radio enabled, NextRadio reported it cannot talk to it. so I want to know if I can jack an FM radio through the stereo port on the G5 and use some program to record the broadcast?

if it can, what program do I need to or should, use?

Do to not get most FM stations streamed online these days?

this is a special event where they bring their own FM broadcasting equipment. it's on low frequency.

seem I need to get a TRP adapter and should be able to do this, but if anyone can give me concrete instructions on what is needed on the G5 running 6.0, it's appreciated! :)