Installed my transponder this off season, passed the transponder check to make it legal. First flight with it yesterday. Called the local controlling agency to check it out. They had nothing on me, but they did once I cycled the transponder off and back on. I then realized that where the "ALT" is indicated on the lower right of the screen with the little airplane symbol was actually just 3 dashes instead. Multiple times in flight I noticed it kicked off to the dashes, and I wasn't broadcasting. It seems a reboot worked, but not for long. Running it with a premade wiring harness and L2 antenna, dual LiPo batteries. Anyone have any ideas?

Jordan
ASW20