I think the main issue with the project is more the software outside the SDR software, they wanted these radios to do everything to the point of absurdity, just

I think the main issue with the project is more the software outside the SDR software, they wanted these radios to do everything to the point of absurdity, just look at the list: https://en.wikipedia.org/wiki/Joint_Tactical_Radio_System#Waveforms https://en.wikipedia.org/wiki/Joint_Tactical_Radio_System#Wa... This requires a significant amount of software outside of decoding a radio signal from a bitstream into another bitstream. You have tons of software to interface to all the little dingus and do-dads you want to plug in. Some of this is standardized. Remember, the military connector category on Mouser is 500,000 parts large.