wanttaja
En-Route
No doubt you can build a J3 panel for that. Heck, I have everything to do that sitting on a shelf somewhere. But if you must have ADSB, that takes you well past the $2500 bogey.
Ohhh, yeah. I had to spend about $2000 just to install ADS-B in my Fly Baby, and I already *had* a transponder and altitude encoder.
Note that $2,000 is about 25% of the total value of my airplane.....
But of course, the typical J-3 (or Fly Baby) don't need ADS-B unless they're actually going to fly in Class B or C airspace....
Ron Wanttaja