its really quite easy to integrate it into the radio i am using to broadcast (Yaesu 757-GXII).
i just have to watch/adjust the AM & PM modulation levels, trying different adjustments and testing it for the best outcome result (the purpose of the low power test broadcast).
im doing this in a rather crude way, it was relatively easy to enable simultaneous PM & AM modulation but the crude part is using two soundcards, one soundcard has L+R and the other has L-R, both are processed and synchronized by two instances of stereotool - the PCB is an "isolation" circuit to avoid common grounds on both sides of the audio chain so they dont cancel each other out.
so this really requires alot of adjustments and calibration to get it to operate correctly but the results so far are pretty good.
good thing work is slow today.
also going to try DRM as well.