@delan: hey i'm gonna go heat up these leftovers
me: ok coo- WAIT when you get there hold down the stop button on the microwave until it beeps once and says Loc and then keep holding it until it beeps even more and says 5
@delan: o-ok
so some LG whitegoods have a “smart diagnosis™ function” which is meant to be used when you're on the phone with their service techs. you hold down some button or enter an interesting sequence into the limited set of buttons on your fridge, microwave, dishwasher, washing machine, god knows, then it bip bip bip bip bip blblblblblbls an audible MFSK signal that the service rep can decode and idk. diagnose your issue
has someone already deciphered this? probably! do i care? nope! so we recorded the fridge and microwave making their blblblblblbls and did the dsp required to demod them
what a clean eye diagram. god damn