Front jack is the programming connection.   Rear jack is audio.   
Make sure the Tip-Ring-Ring-Sleeve plug is FIRMLY seated.   

/CB

On Jan 11, 2018, at 6:34 PM, sreeb <sreeb@beers.nu> wrote:

I can't help yet, but maybe you can help me.  I'm still trying to get mine to communicate with chirp at all.

Are you plugged into the front or rear jack?