At annual last month I had a Skybeacon installed. Seems to be working according to a check with a class B ATC. ATC said they could see it working and seemed a little annoyed so I left their airspace without anything more than a “Yeah, it is working”. For ADS-B in I am planning on getting a Sentry or Scout to work with my iPad and ForeFlight. Was wondering if I could see my own aircraft as a check if it is functioning periodically during a flight (I have heard it is not always reliable). What is interesting is that my airplane has only shown up once on Flightaware which was a week before ATC confirmed it was working. Not even the flight to check with ATC showed up on Flightaware. Any other suggestions on periodically verifying it is functioning?