All: I suspected I had some stupid setting wrong . . . . . well, close. Turns out the port labelled COMM1 is in fact, COMM2. Once I figured that out, both LadyHeather and TBOLTmon communicate. Now I have to figure out why, after acquiring a LOCK yesterday, today it is declarning, ANTENNA OPEN. Thanks for all the help! 73, Jim wb4gcs at amsat.org