Agree 110% with WWW - practice pans have no place on 121.5. I fully appreciate their usefulness and thing they are a very good thing, but absolutely not on the "live" distress freq. Like WWW I often find myself having to deselect 121.5 for long periods (and then forgetting to reselect it later, the joys of old age
) - it's an air safety hazard in my opinion.