I am using an Alinco DR-235 as a transmitter for an AllStar 220 repeater. The audio input is via the rear DB-9 connector pin 3 ( 9600 baud, no preemphasis ). The PL is injected along with the tx audio from a URI. I have to increase the PL level quite high to get it to where it decodes, then the audio gets raspy. Looking at the service monitor, the PL sine wave is not clean. Anyone have experience with this??