Hi,

I used some PIC24 with Basic and it's different from 12,16,18 series, but easier than using a new device like MAX3107.
For MAX3107, it seems that it is a new device (2014 ?) and I remember that I found some other same kind of device in 2011. They were very expensive !

This topic is not mine and there are many other things than 4 USART to use with 24 and 32 series.
There is a song here that says those who do not go forward, go backward.
I hope it's not already too late ;-)
Regards